|
|
Creator | Title | Description | Subject | Date |
| 1 |
 |
Furse, Cynthia M. | 13 crazy, notorious things to do in an EM class | The average attention span of an adult human is 12-20 minutes. Our lectures are 50-80 minutes. Attention Span Math reminds us to take a break now and then, and to bring the class back to life by bringing some life to the class. Many students learn things better if they can see and touch them, so thi... | Attention span; Fun | 2005-06 |
| 2 |
 |
Furse, Cynthia M. | 3D ray-tracing for intra-vehicle environments | In order to develop a wireless communication system that could be used for all types of aircraft sensor networks, the severe multipath channel found inside aircrafts must be well defined. This multipath channel is much more complex than usual outdoor/indoor channels and thus far, research has been l... | | 2009 |
| 3 |
 |
Khan, Faisal Habib | 5 kW multilevel DC-DC converter for hybrid electric and fuel cell automotive applications | A 5 kW multilevel modular capacitor clamped dc-dc converter (MMCCC) for future hybrid electric vehicle and fuel cell automotive applications will be presented in this paper. The modular structure of the MMCCC topology was utilized to build this 5 kW converter with high reliability and fault bypassi... | | 2007-09 |
| 4 |
 |
Blair, Steven | A 3D glass optrode array for optical neural stimulation | This paper presents optical characterization of a first-generation SiO2 optrode array as a set of penetrating waveguides for both optogenetic and infrared (IR) neural stimulation. Fused silica and quartz discs of 3-mm thickness and 50-mm diameter were micromachined to yield 10×10 arrays of up to 2-... | | 2012-01-01 |
| 5 |
 |
Khan, Faisal Habib | A 5 kW Bi-directional multilevel modular DC-DC converter (MMCCC) featuring built in power management for fuel cell and hybrid electric automobiles | Abstract- A new capacitor clamped modular dc-dc converter with bi-directional power handling capability will be presented in this paper. This inductor-free design is modular, and it is possible to integrate multiple loads and sources simultaneously in the converter. Moreover, this 5 kW dc-dc convert... | | 2007 |
| 6 |
 |
Mathews, V. John | A baseband residual vector quantization algorithm for voiceband data signals | Abstract-In this paper, we present a new approach to the digitization and compression of a class of voiceband modem signals. Our approach, which we call baseband residual vector quantization (BRVQ), relies heavily upon the simple structure present in a modem signal. After the signal is converted to... | | 1989 |
| 7 |
 |
Mathews, V. John; Schlegel, Christian | A blind adaptive projection receiver for CDMA systems | Abstract - This paper presents a blind and adaptive CDMA receiver that does not require knowledge of the spreading codes associated with users other than the ones of interest. Receivers for synchronous as well as asynchronous transmission by multiple users with error control coding are develope... | | 1998 |
| 8 |
 |
Mathews, V. John; Schlegel, Christian | A blind projection receiver for coded CDMA systems | ABSTRACT This paper presents a blind adaptive CDMA receiver that requires no knowledge of the spreading codes, the delays, and the energy of the received signals associated with the interfering users. Our receiver is based on linear interference cancellation and adaptive interference signal subspa... | | 1999 |
| 9 |
 |
Ziegenfuss, Donna | A Busy Professor's Guide to Sanely Flipping Your Classroom | The Flipped Classroom has become a popular teaching method. Students watch video lectures before class, saving class time for active learning (problem solving, demonstrations, applications, etc.). This paper is a useful guide for busy professors who would like to try out the flipped classroom approa... | flipped classroom; inverted classroom; engineering education; teaching electromagnetics; assessment pedagogy | 2019 |
| 10 |
 |
Furse, Cynthia M. | A busy professors guide to sanely flipping your classroom | This paper describes the use of the flipped classroom approach for an Introduction to Electromagnetics course. Video lectures were created on a tablet PC, and uploaded to YouTube. Students watched the videos before coming to class. Class time was used for problem solving strategy (using homework as ... | | 2013-01-01 |
| 11 |
 |
Furse, Cynthia M. | A comparative study on two types of transparent patch antennas | Properties of optically transparent patch antennas designed from meshed conductor and transparent conductive films are studied and compared. It is shown that at S band, meshed antenna provides the best antenna efficiency for the highest transparency. It is practical to design a 90% transparent mesh... | | 2011 |
| 12 |
 |
Myers, Chris J. | A compositional minimization approach for large asynchronous design verification | This paper presents a compositional minimization approach with efficient state space reductions for verifying non-trivial asynchronous designs. These reductions can result in a reduced model that contains the exact same set of observably equivalent behavior in the original model, therefore no false ... | | 2012-01-01 |
| 13 |
 |
Mathews, V. John | A fast recursive least-squares adaptive nonlinear filter | This paper presents a fast, recursive least-squares (RLS) adaptive nonlinear filter. The nonlinearity in the system is modeled using the Hammerstein model, which consists of a memoryless polynomial nonlinearity followed by a finite impulse response linear system. The complexity of our method is abou... | | 1988 |
| 14 |
 |
Mathews, V. John | A fast recursive least-squares second order volterra filter | ABSTRACT This paper presents a fast, recursive least-squares (RLS) adaptive nonlinear filter. The nonlinearity is modelled using a second order Volterra series expansion. The structure presented in the paper makes use of the ideas of fast RLS multichannel filters and has a computational complexity ... | | 1988 |
| 15 |
 |
Simpson, Jamesina J. | A feasibility study of microjets applied to breast cancer detection | The feasibility of detecting small tumors of diameter 0.5mm inside a human breast is demonstrated using microjets. Microjets are photonic nanojets scaled to microwave frequencies wherein a plane-wave-illuminated dielectric sphere produces a high-intensity, narrow beam of light extending from the sha... | | 2012-01-01 |
| 16 |
 |
Tasdizen, Tolga; Whitaker, Ross T. | A geometric multigrid approach to solving the 2D inhomogeneous laplace equation with internal drichlet boundary conditions | The inhomogeneous Laplace (Poisson) equation with internal Dirichlet boundary conditions has recently appeared in several applications to image processing and analysis. Although these approaches have demonstrated quality results, the computational burden of solution demands an efficient solver. Desi... | | 2005 |
| 17 |
 |
Khan, Faisal Habib | A high-efficiency modular switched-capacitor converter with continuously variable conversion ratio | The multilevel modular capacitor clamped converter (MMCCC) topology overcomes the difficulties of the multilevel switched capacitor (SC) based dc-to-dc converters in high conversion ratio applications. MMCCC is completely modular and has many other advantageous features. Like most other SC converter... | | 2012-01-01 |
| 18 |
 |
Mastrangelo, Carlos H. | A high-resolution flexible tactile imager system based on floating comb electrodes | Flexible high-resolution contact force imagers are needed in many applications for robotic grippers and gait analysis, but its intrinsic intimate contact requirement often causes breaking of top metallization layers and failure in a short time. The use of floating electrodes has significantly improv... | | 2012-01-01 |
| 19 |
 |
Furse, Cynthia M. | A history & future of implantable antennas | Implantable antennas have been used for communication with medical implants for decades. This paper traces their roots from early transcutaneous inductively coupled devices to the microstrip and wire antennas in use today. A suggestion for where this technology may go in the future as medical device... | | 2014-01-01 |
| 20 |
 |
Stevens, Kenneth | A low power UART design based on asynchronous techniques | Abstract-Universal Asynchronous Receiver Transmitter (UART) implements serial communication between peripherals and remote embedded systems. The UART protocol is defined based on fixed frequencies with a sampling method to achieve robustness under reasonable frequency variations between systems. Suc... | | 2013-01-01 |
| 21 |
 |
Khan, Faisal Habib | A low-cost non-mechanical maximum power point tracking scheme for grid-tied single-phase induction generators | A new configuration of a single-phase induction generator based power generation system with maximum power point tracking capability is proposed in this paper, and this configuration is suitable for small-scale variable speed wind energy conversion system. Using this technique, the synchronous speed... | | 2012-01-01 |
| 22 |
 |
Simpson, Jamesina J. | A magnetic field-independent absorbing boundary condition for magnetized cold plasma | An effective absorbing boundary condition (ABC) based on the second-order approximations of Engquist and Majda's wave equations is presented for terminating three-dimensional finite-difference time-domain (FDTD) models employing the E-J collocated magnetized cold plasma algorithm. Numerical tests de... | | 2011-01-01 |
| 23 |
 |
Stevens, Kenneth | A mathematical approach to a low power FFT architecture | Architecture and circuit design are the two most effective means of reducing power in CMOS VLSI. Mathematical manipulations have been applied to create a power efficient architecture of an FFT. This architecture has been implemented in asynchronous circuit technology that achieves significant powe... | | 1998 |
| 24 |
 |
Mathews, V. John; Clark, Edward B. | A mathematical basis for the application of the modified geometric method to maximum frequency estimation | Abstract-The application of ultrasound in assessing the fetal cardiovascular system often requires the accurate estimation of maximum blood flow velocity waveforms using Doppler measurements. The modified geometric method estimates the maximum Doppler frequency as the frequency at which the vertica... | | 2004 |
| 25 |
 |
Blair, Steven | A methodology for physical design automation for integrated optics | Advancements in silicon photonics technology are enabling large scale integration of electro-optical circuits and systems. To fully exploit this potential, automated techniques for design space exploration and physical synthesis for integrated optics must be developed. This paper investigates how co... | | 2012-01-01 |
| 26 |
 |
Mathews, V. John | A minimax approach for the joint design of acoustic crosstalk cancellation filters | Abstract-This paper presents a method for jointly designing immersive audio rendering filters for a single listener using loudspeakers. The filters for crosstalk cancellation are assumed to have finite impulse responses and are designed using the minimax criterion. In addition to the traditional At... | | 2007 |
| 27 |
 |
Mathews, V. John | A new carrier frequency estimator for modem signals | ABSTRACT A novel carrier frequency estimation scheme for a relatively broad class of voiceband data signals (modem signals) is presented in this paper. The class of signals being studied includes different types of phase-shift-keyed (PSK) and frequency-shift-keyed (FSK) signals. The frequency estim... | | 1988 |
| 28 |
 |
Mathews, V. John | A new model of perceptual threshold functions for application in image compression systems | This paper discusses the development of a perceptual threshold model for the human visual system. The perceptual threshold functions describe the levels of distortions present at each location in an image that human observers can not detect. Models of perceptual threshold functions are useful in ima... | | 1995 |
| 29 |
 |
Simpson, Jamesina J. | A novel ELF radar for major oil deposits | This letter proposes a novel extremely low frequency (ELF) radar for major oil deposits. Using our recently developed whole-Earth electromagnetic wave propagation model based upon the finite-difference time-domain method, we have determined that detection of the radial (vertical) component of the sc... | | 2006-01-01 |
| 30 |
 |
Mathews, V. John | A phase likelihood-based algorithm for blind identification of PSK signals | This paper presents a phase likelihood-based method for automatically identifying different phase-shift keying (PSK) modulations. This method identifies the PSK signals as the hypothesis for which the likelihood function of phase difference between nearby samples of the received signal is the maximu... | | 2014-01-01 |
| 31 |
 |
Simpson, Jamesina J. | A review of progress in FDTD Maxwell's equations modeling of impulsive subionospheric propagation below 300 kHz | Wave propagation at the bottom of the electromagnetic spectrum (below300 kHz) in the Earth-ionosphere waveguide system has been an interesting and important area of investigation for the last four decades. Such wave propagation is characterized by complex phenomena involving nonhomogeneous and aniso... | | 2007-01-01 |
| 32 |
 |
Furse, Cynthia M.; Gandhi, Om P. | A simple convolution procedure for calculating currents induced in the human body for exposure to electromagnetic pulses | Abstract-The finite-difference time-domain (FDTD) and frequency dependent finite difference time-domain (FD)2TD methods have been previously used to calculate internal electric (E) fields and induced currents for exposure of the anatomically based model of the human body to electromagnetic pulses (E... | | 1994 |
| 33 |
 |
Stevens, Kenneth | A single chip low power asynchronous implementation of an FFT algorithm for space applications | A fully asynchronous _x000C_fixed point FFT processor is introduced for low power space applications. The architecture is based on an algorithm developed by Suter and Stevens specifi_x000C_cally for a low power implementation. The novelty of this architecture lies in its high localization of compo... | | 1998 |
| 34 |
 |
Mathews, V. John | A stability condition for certain bilinear systems | Abstract-This correspondence derives a simple sufficient condition for the output of a discrete-time, time-invariant bilinear system to be bounded whenever the input signal to the system is bounded by a finite constant. | | 1994 |
| 35 |
 |
Mathews, V. John | A stability result for RLS adaptive bilinear filters | Abstract- This letter considers recursive least squares (RLS) adaptive nonlinear filtering using bilinear system models. It is shown that the extended RLS adaptive bilinear filter, as well as the equation-error RLS adaptive bilinear filter, are guaranteed to be stable in the sense that the time aver... | | 1994 |
| 36 |
 |
Mathews, V. John | A stable adaptive Hammerstein filter employing partial orthogonalization of the input signals | Abstract-This paper presents an algorithm that adapts the parameters of a Hammerstein system model. Hammerstein systems are nonlinear systems that contain a static nonlinearity cascaded with a linear system. In this paper, the static nonlinearity is modeled using a polynomial system, and the linear ... | | 2006 |
| 37 |
 |
Mathews, V. John; Dubow, Joel | A stable adaptive Hammerstein filter employing partial orthogonalization of the input signals | Abstract This paper presents an algorithm that adapts the parameters of a Hammerstein system model. Hammerstein systems are nonlinear systems that contain a static nonlinearity cascaded with a linear system. In this work, the static nonlinearity is modeled using a polynomial system and the linear f... | | 2002 |
| 38 |
 |
Myers, Chris J. | A standard-cell self-timed multiplier for energy and area critical synchronous systems | This paper describes the design of a standard-cell self-timed multiplier for use in energy and area critical synchronous systems. The area of this multiplier is bounded by N rather than N2 as seen in more traditional combinational parallel array designs, where N is the word size. Energy has a polyn... | | 2001 |
| 39 |
 |
Furse, Cynthia M. | A stochastic FDTD method for statistically varying biological tissues | THE analysis of radio wave absorption is a continuing concern for the cell phone industry due to health effects (and associated regulations) of the person using the cell phone [1,2]. The amount of allowable power absorbed has a strong impact on the design of the phone (antenna, electromagnetic inte... | | 2011 |
| 40 |
 |
Simpson, Jamesina J. | A stochastic FDTD model of electromagnetic wave propagation in magnetized ionospheric plasma | Communications, surveillance, and navigation capabilities rely heavily on accurate knowledge of electromagnetic (EM) signal propagation characteristics through and reflected by the Earth's ionosphere. Satellite communications, over-the-horizon radar, and target direction finding are a few example ap... | | 2013-01-01 |
| 41 |
 |
Mathews, V. John | A stochastic gradient adaptive filter with gradient adaptive step size | Abstract-This paper presents an adaptive step-size gradient adaptive filter. The step size of the adaptive filter is changed according to a gradient descent algorithm designed to reduce the squared estimation error during each iteration. An approximate analysis of the performance of the adaptive fil... | | 1993 |
| 42 |
 |
Furse, Cynthia M. | A study on the efficiency of transparent patch antennas designed from conductive oxide films | Abstract? A study on the efficiency of transparent patch antennas designed from indium tin oxide (ITO) films is presented to provide design guidelines for patch type transparent antennas. The trade-offs between optical transparency and antenna efficiency is analyzed by considering typical materia... | | 2011 |
| 43 |
 |
Furse, Cynthia M. | A tutorial on Stochastic FDTD | The Stochastic FDTD (S-FDTD) method provides a way to determine the mean and variance of the electric and magnetic fields in a model where the electrical properties (conductivity and permittivity) vary stochastically, from a single S-FDTD simulation. This method is a realistic and more efficient alt... | | 2014-01-01 |
| 44 |
 |
Mathews, V. John | A unified approach to nonparametric spectrum estimation algorithms | Abstract-Different approaches to spectrum estimation can be broadly classified as parametric and nonparametric methods. In the parametric techniques, an underlying model is assumed in the formulation of the spectrum estimation problem and one estimates the parameters of the model. For nonparametric... | | 1987 |
| 45 |
 |
Mastrangelo, Carlos H. | A very high density floating electrode flexible sensor array for high-resolution measurements of contact forces | We present the development, fabrication and testing results of a new high-density flexible sensor array (HDFA) suitable of recording three-axis stresses with high spatial resolution. The new HDFA consists of 676 (26×26) sensing cells fabricated on top of a high-density flex circuit substrate. Each ... | | 2013-01-01 |
| 46 |
 |
Khan, Faisal Habib | AC solar cells: An embedded "all in one" PV power system | Power converters constructed from discrete components are difficult to mass produce, and the installation involves a significant labor cost to have the proper interconnection among the panel, inverter and the grid. These facts indicate that the present PV technology may not be able to address the ch... | | 2012-01-01 |
| 47 |
 |
Myers, Chris J.; Gopalakrishnan, Ganesh | Achieving fast and exact hazard-free logic minimization of extended burst-mode gC finite state machines | Abstract This paper presents a new approach to two-level hazard-free logic minimization in the context of extended burst-mode finite state machine synthesis targeting generalized C-elements (gC). No currently available minimizers for literal-exact two-level hazard-free logic minimization of extende... | | 2000 |
| 48 |
 |
Mathews, V. John | Adaptive algorithms for identifying recursive nonlinear systems | ABSTRACT This paper presents two fast least-squares lattice algorithms for adaptive non-linear filters equipped with system models involving nonlinear feedback. Such models can approximate a large class of non-linear systems adequately, and usually with considerable parsimony in the number of coeff... | | 1991 |
| 49 |
 |
Mathews, V. John | Adaptive bilinear predictors | This paper considers an extended recursive least squares (RLS) adaptive bilinear predictor. It is shown that the extended RLS adaptive bilinear predictor is guaranteed to be stable in the sense that the time average of the squared a-posteriori prediction error signal is bounded whenever the input... | | 1994 |
| 50 |
 |
Mathews, V. John | Adaptive filters requiring zero multiplications | This paper introduces an adaptive filter structure that requires zero multiplications for its implementations. The primary input signals are quantized using DPCM and the DPCM outputs are processed by the adaptive filter. The sign algorithm. We show that if the parameters are chosen properly, hardwar... | | 1987 |
| 51 |
 |
Mathews, V. John; Nilsson, Michael | Adaptive gain processing to improve feedback cancellation in digital hearing aids | Adaptive filters are commonly used to cancel acoustic feedback in hearing aids. The sound quality of hearing aids deteriorates as the hearing aid gain is increased. This paper presents a method to alter the gain function in digital hearing aids to provide additional amplification and better output ... | | 2008 |
| 52 |
 |
Mathews, V. John | Adaptive gain processing with offending frequency suppression for digital hearing aids | Digital hearing aids identify acoustic feedback signals and cancel them continuously in a closed loop with an adaptive filter. This scheme facilitates larger hearing aid gain and improves the output sound quality of hearing aids. However, the output sound quality deteriorates as the hearing aid gai... | | 2012 |
| 53 |
 |
Mathews, V. John | Adaptive lattice bilinear filters | Abstract-This paper presents two fast least squares lattice algorithms for adaptive nonlinear filters equipped with bilinear system models. Bilinear models are attractive for adaptive filtering applications because they can approximate a large class of nonlinear systems adequately, and usually with... | | 1993 |
| 54 |
 |
Mathews, V. John | Adaptive nonlinear digital filter with sequential regression algorithm | The purpose of this paper is to introduce an adaptive nonlinear digital filtering algorithm which use the sequential regression (SER) method to update the second order Volterra filter coefficients in a recursive way. Conventionally, the SER method has been used to invert large matrices which result ... | | 1984 |
| 55 |
 |
Mathews, V. John | Adaptive parallel-cascade truncated volterra filters | Abstract-This paper studies adaptive truncated Volterra filters employing parallel-cascade structures. Parallel-cascade realizations implement higher order Volterra systems a s a parallel connection of multiplicative combinations of lower order truncated Volterra systems. A normalized LMS adaptive f... | | 1998 |
| 56 |
 |
Mathews, V. John | Adaptive phase transform processors for time delay estimation | This paper introduces two recursive realizations of the phase transform (PHAT) processor for time-delay estimation (TDE), using a simple one-pole low-pass filter and the least-mean-square (LMS) adaptive filter, respectively. It is shown that these adaptive methods are capable of tracking time-varyin... | | 1993 |
| 57 |
 |
Mathews, V. John | Adaptive polynomial filters | While linear filter are useful in a large number of applications and relatively simple from conceptual and implementational view points. there are many practical situations that require nonlinear processing of the signals involved. This article explains adaptive nonlinear filters equipped with polyn... | | 1991 |
| 58 |
 |
Mathews, V. John | Adaptive realization of a maximum likelihood time delay estimator | ABSTRACT This paper presents an adaptive maximum likelihood method for estimating the time difference of arrival of a source signal at two spatially separate sensors. It is well-known that the maximum likelihood technique achieves the Cramer-Rao lower bound for time delay estimation error for ce... | | 1996 |
| 59 |
 |
Mathews, V. John | Adaptive realizations of the maximum likelihood processor for time delay estimation | Abstract-This correspondence introduces an adaptive realization of the maximum likelihood (ML) processor for time delay estimation (TDE). Also presented is a modified ML processor, which requires less computations but still performs better than the other when implemented in an adaptive way. Widrow'... | | 1984 |
| 60 |
 |
Mathews, V. John | Adaptive realizations of the phase transform for time delay estimation | ABSTRACT This paper introduces two recursive realizations of the Phase Transforn (PHAT) processor for tine delay estimation (TOE), using a simple one-pole lowpass filter and the least mean square (LMS) adaptive filter, respectively. It is shown that these adaptive methods are very effective in redu... | | 1984 |
| 61 |
 |
Mathews, V. John | Adaptive unsharp masking for contrast enhancement | ABSTRACT A new scheme o,f unsharp masking for image contrast enhancement is presented in this paper. An adaptive algorithm is introduced so that a sharpening action is performed only in locations where the image exhibits significant dynamics. Hence, the amplification of noise in smooth areas i... | | 1997 |
| 62 |
 |
Mathews, V. John | Adaptive volterra filters using orthogonal structures | Abstract- This paper presents an adaptive Volterra filter that employs a recently developed orthogonalization procedure of Gaussian signals for Volterra system identification. The algorithm is capable of handling arbitrary orders of nonlinearity P as well as arbitrary lengths of memory N for the sys... | | 1995 |
| 63 |
 |
Mathews, V. John | Adaptive volterra filters using orthogonal structures | Abstract-This paper presents an adaptive Volterra filter that empolys a recently developed orthogonalization procedure of Gaussian signals for Volterra system identification. The algorithm is capable of handling arbitrary orders of nonlinearity P as well as arbitrary lengths of memory N for the syst... | | 1996 |
| 64 |
 |
Mathews, V. John | Adaptive, quadratic preprocessing of document images for binarization | Abstract-This paper presents an adaptive algorithm for preprocessing document images prior to binarization in character recognition problems. Our method is similar in its approach to the blind adaptive equalization of binary communication channels. The adaptive filter utilizes a quadratic system mod... | | 1998 |
| 65 |
 |
Simpson, Jamesina J. | ADE-FDTD scattered-field formulation for dispersive materials | This letter presents a scattered-field formulation for modeling dispersive media using the finite-difference time-domain (FDTD) method. Specifically, the auxiliary differential equation method is applied to Drude and Lorentz media for a scattered field FDTD model. The present technique can also be a... | | 2008-01-01 |
| 66 |
 |
Stringfellow, Gerald B.; Shurtleff, James Kevin | Adsorption and desorption of the surfactant Sb on GaInP grown by organometallic vapor phase epitaxy | It has been determined that ordering has a profound effect on the bandgap energy of many compound semiconductor alloys. Therefore, ordering must be controlled for devices such as solar cells, light emitting diodes and diode lasers. Since ordering depends on the surface properties during organomet... | Time dependent surface photoabsorption (SPA); Compound semiconductor alloys | 2000 |
| 67 |
 |
Tasdizen, Tolga | Algebraic curves that work better | An algebraic curve is defined as the zero set of a polynomial in two variables. Algebraic curves are practical for modeling shapes much more complicated than conics or superquadrics. The main drawback in representing shapes by algebraic curves has been the lack of repeatability in fitting algebraic... | | 1999 |
| 68 |
 |
Stevens, Kenneth | Algorithms for MIS vector generation and pruning | Ignoring the effect of simultaneous switching for logic gates causes silicon failures for high performance microprocessor designs. The main reason to omit this effect is the run time penalty and potential over-conservatism. Run times are directly proportional to the vector sizes. Efficient algorithm... | | 2006 |
| 69 |
 |
Stevens, Kenneth | An A-FPGA architecture for relative timing based asynchronous designs | This paper presents an asynchronous FPGA architecture that is capable of implementing relative timing based asynchronous designs. The architecture uses the Xilinx 7-Series architecture as a starting point and proposes modifications that would make it asynchronous design capable while keeping it full... | | 2014-01-01 |
| 70 |
 |
Mathews, V. John | An adaptive channel estimator for CDMA systems in multipath fading channels | ABSTRACT CDMA systems in multipath fading channels need to estimate channel parameters for coherent detection of the transmitted signals. In this paper we present a simple but effective channel estimation algorithm that can be incorporated into most types of multiuser receivers to obtain good dete... | | 2001 |
| 71 |
 |
Mathews, V. John | An analytical model of the perceptual threshold function for multichannel image compression | ABSTRACT The human observer is often the final judge of the quality of compressed images. One way to design a compression system that attempts to reduce or eliminate subjective distortions in the coded images is to incorporate a perceptual threshold function model into the compression system. The... | | 1998 |
| 72 |
 |
Myers, Chris J. | An asynchronous implementations of the MAXLIST algorithm | ABSTRACT We present an efficient asynchronous VLSI architecture for calculating running maximum or minimum values over a sliding window. Running maximums or minimums are very useful for many signal and image processing tasks. Our architecture performs the calculation using the MAXLIST algorithm. In... | | 1997 |
| 73 |
 |
Myers, Chris J.; Stevens, Kenneth | An asynchronous instruction length decoder | Abstract-This paper describes an investigation of potential advantages and pitfalls of applying an asynchronous design methodology to an advanced microprocessor architecture. A prototype complex instruction set length decoding and steering unit was implemented using self-timed circuits. [The Revolvi... | | 2001 |
| 74 |
 |
Stevens, Kenneth; Myers, Chris J. | An asynchronous instruction length decoder | This paper describes an investigation of potential advantages and pitfalls of applying an asynchronous design methodology to an advanced microprocessor architecture. A prototype complex instruction set length decoding and steering unit was implemented using self-timed circuits. [The Revolving Async... | | 2001 |
| 75 |
 |
Simpson, Jamesina J. | An E-J collocated 3-D FDTD model of electromagnetic wave propagation in magnetized cold plasma | A new three-dimensional finite-difference time-domain (FDTD) numerical model is proposed herein to simulate electromagnetic wave propagation in an anisotropic magnetized cold plasma medium. Plasma effects contributed by electrons, positive, and negative ions are considered in this model. The current... | | 2010-01-01 |
| 76 |
 |
Mathews, V. John | An efficient algorithm for joint estimation of differential time delays and frequency offsets | ABSTRACT This paper introduces an efficient algorithm that jointly estimates differential time delays and frequency offsets between two signals. The approach is a two-step procedure. First, the differential frequency offsets are estimated from measurement of the autocorrelation functions of the rec... | | 1992 |
| 77 |
 |
Mathews, V. John | An efficient algorithm for lattice filter/predictor | ABSTRACT An efficient method for updating the lattice filter/predictor coefficients using the sign algorithm is introduced. The pertinent coefficients are updated using only the signs of the estimation errors at each stage. This method requires less number of multiplications than other adaptive la... | | 1985 |
| 78 |
 |
Simpson, Jamesina J. | An efficient stochastic approach to uncertainty quantification in 3-D FDTD magnetized cold plasma | An efficient stochastic finite-difference time-domain (S-FDTD) method is developed to analyze electromagnetic field variability in three dimensional anisotropic magnetized plasma. The new S-FDTD plasma model provides a full understanding of the true physics due to the associated uncertainties and ha... | | 2014-01-01 |
| 79 |
 |
Mastrangelo, Carlos H. | An exothermal energy release layer for microchip transience | A single layer nanothermite spin coated gel has been utilized as a solid-state exothermic energy release layer for triggered microchip transience. A proportional combination of self-assembled CuO/Al nanothermite and Napalm-B as gelling agent has been used to develop for the first time a spinable nan... | | 2013-01-01 |
| 80 |
 |
Myers, Chris J. | An improvement in partial order reduction using behavioral analysis | Efficacy of partial order reduction in reducing state space relies on adequate extraction of the independence relation among possible behaviors. However, traditional approaches by statically analyzing system model structures are often not able to reveal enough independence for reduction. To address ... | | 2012-01-01 |
| 81 |
 |
Mathews, V. John | An optimal design procedure for intraband vector quantized subband coding | AbstTact- Subband coding with vector quantization is addressed in this paper. Forming the data vectors from both between and within the subbands is considered. The former of these two schemes is referred to as interband coding and the latter as intraband coding. Interband coder design is relatively ... | | 1995 |
| 82 |
 |
Harrison, Reid R.; Myers, Chris J.; Schlegel, Christian | Analog decoding of product codes | A design approach is presented for soft-decision decoding of block product codes ("block turbo codes") using analog computation with MOS devices. Application of analog decoding to large code sizes is also considered with the introduction of serial analog interfaces and pipeline schedules. | | 2001-01-11 |
| 83 |
 |
Myers, Chris J. | Analog decoding of product codes | A design approach is presented for soft-decision decoding of block product codes ("block turbo codes") using analog computation with MOS devices. Application of analog decoding to large code sizes is also considered with the introduction of serial analog interfaces and pipeline schedules. | | 2001 |
| 84 |
 |
Myers, Chris J.; Harrison, Reid R.; Schlegel, Christian | Analog decoding of product codes | Abstract - A method is presented for analog softdecision decoding of block product codes (block turbo codes). Extrinsic information is exchanged as analog signals between component row and column decoders. The component MAP decoders use low-power analog computation in subthreshold CMOS circuits t... | | 2002 |
| 85 |
 |
Harrison, Reid R.; Myers, Chris J.; Schlegel, Christian | Analog decoding of product codes | A method is presented for analog softdecision decoding of block product codes (block turbo codes). Extrinsic information is exchanged as analog signals between component row and column decoders. The component MAP decoders use low-power analog computation in subthreshold CMOS circuits to implement th... | | 2002 |
| 86 |
 |
Myers, Chris J.; Schlegel, Christian | Analog MAP decoder for (8, 4) hamming code in subthreshold CMOS | An all-MOS analog implementation of a MAP decoder is presented for the (8, 4) extended Hamming code. This paper describes the design and analysis of a tail-biting trellis decoder implementation using subthreshold CMOS devices. A VLSI test chip has recently returned from fabrication, and preliminary ... | | 2001 |
| 87 |
 |
Myers, Chris J.; Schlegel, Christian | Analog MAP decoder for (8, 4) hamming code in subthreshold CMOS | Abstract - An all-MOS analog tail-biting MAP decoder is presented for an (8,4) Hamming code. The decoder implements a probability propagation algorithm using subthreshold CMOS networks. Physical results verify the expected behavior of the decoderand demonstrate robustness of analog decoding circuit... | | 2001 |
| 88 |
 |
Harrison, Reid R. | Analog MAP decoder for (8,4) hamming code in subthreshold CMOS | An all-MOS analog tail-biting MAP decoder is presented for an (8,4) Hamming code. The decoder implements a probability propagation algorithm using subthreshold CMOS networks. Physical results verify the expected behavior of the decoder and demonstrate robustness of analog decoding circuits. | MAP decoder; Hamming code; VLSI | 2004-01-01 |
| 89 |
 |
Harrison, Reid R. | Analog VLSI implementation of a visual interneuron: enhanced sensory processing through biophysical modeling | Flies are capable of rapid, coordinated flight through unstructured environments. This flight is guided by visual motion information that is extracted from photoreceptors in a robust manner. One feature of the fly's visual processing that adds to this robustness is the saturation of wide-fi_x000... | | 1999-01-01 |
| 90 |
 |
Harrison, Reid R. | Analog VLSI model of the fly elementary motion detector | Flies are capable of rapidly detecting and integrating visual motion information in behaviorly-relevant ways. The first stage of visual motion processing in flies is a retinotopic array of functional units known as elementary motion detectors (EMDs). Several decades ago, Reichardt and colleagues de... | | 1998-01-01 |
| 91 |
 |
Furse, Cynthia M. | Analysis of electromagnetic field variability in magnetized ionosphere plasma using the stochastic FDTD method | A stochastic finite-difference time-domain (S-FDTD) algorithm is presented for electromagnetic wave propagation in anisotropic magnetized plasma. This new algorithm efficiently calculates in a single simulation not only the mean electromagnetic field values, but also their variance as caused by the ... | | 2014-01-01 |
| 92 |
 |
Furse, Cynthia M. | Analysis of spread spectrum time domain reflectometry for wire fault location | Spread spectrum time domain reflectometry (SSTDR) and sequence time domain reflectometry have been demonstrated to be effective technologies for locating intermittent faults on aircraft wires carrying typical signals in flight. This paper examines the parameters that control the accuracy, latency, ... | Spread spectrum; Sequence time domain reflectometry; STDR; SSTDR; Wire fault location; Aging wire detection; Arc detection | 2005-12 |
| 93 |
 |
Mathews, V. John | Analysis of the short-time unbiased spectrum estimation algorithm | Abstract- The short-time unbiased spectrum estimation (STUSE) algorithm is analyzed and expressions for the mean and variance of the spectrum estimates are derived. The STUSE algorithm deliberately adds biased spectrum estimates in order to yield unbiased estimates and at the same time have excellen... | | 1985 |
| 94 |
 |
Tasdizen, Tolga; Whitaker, Ross T. | Anisotropic diffusion of surface normals for feature preserving surface reconstruction | For 3D surface reconstruction problems with noisy and incomplete range data measure d from complex scenes with arbitrary topologies, a low-level representation, such as level set surfaces, is used. Such surface reconstruction is typically accomplished by minimizing a weighted sum of data-model discr... | | 2003 |
| 95 |
 |
Tasdizen, Tolga; Whitaker, Ross T. | Anisotropic diffusion of surface normals for feature preserving surface reconstruction | For 3D surface reconstruction problems with noisy and incomplete range data measured from complex scenes with arbitrary topologies, a low-level representation, such as level set surfaces, is used. Such surface reconstruction is typically accomplished by minimizing a weighted sum of data-model discre... | | 2003 |
| 96 |
 |
Furse, Cynthia M. | Antenna optimization for vehicular environments | Abstract? This paper presents a multi-antenna optimization for communication in a Rockwell T-39 Sabreliner, a mid-size aircraft with a metallic body. The aircraft channel at 2.45 GHz is modeled using site specific 3D ray-tracing software. Added effects from system details including the antenna radi... | | 2011 |
| 97 |
 |
Furse, Cynthia M. | Application of phase detection frequency domain reflectometry for locating faults in an F-18 flight control harness | The performance of a phase-detection frequency-domain reflectometer (PD-FDR) for locating open and short circuits (hard faults) in a Navy F-18 flight control harness has been tested, and the analytical expressions for accuracy verified. Nine different types of aircraft wires appear in this harness:... | Phase detection; Frequency domain reflectometry; PD-FDR; Wire fault location; Aging wire; Flight control harness | 2005-05 |
| 98 |
 |
Myers, Chris J. | Architectural synthesis of timed asynchronous systems | This paper describes a new method for architectural synthesis of timed asynchronous systems. Due to the variable delays associated with asynchronous resources, implicit schedules are created by the addition of supplementary constraints between resources. Since the number of schedules grows exponenti... | | 1999 |
| 99 |
 |
Stringfellow, Gerald B. | Atomic force microscopy study of ordered GaInP | Examines the nature of the steps on the surface of gallium indium phosphide lattice layers matched to gallium arsenide substrates using atomic force microscopy. Temperatures of organometallic vapor phase epitaxy used; Relation of height of steps with misorientation angle; Link of supersteps with the... | Surface chemistry; Lattice theory | 1995 |
| 100 |
 |
Stringfellow, Gerald B.; Williams, Clayton C. | Atomic ordering of GaInP studied by Kelvin probe force microscopy | The atomic ordering of GaInP has been established and studied by a variety of methods, including transmission electron microscopy, cathodoluminescence, and photoluminescence. In this work, a Kelvin probe force microscope _x0002_KPFM_x0003_ has been employed to image several GaInP samples previous... | Cathodoluminescence; Photoluminescence; Surface morphology | 1995 |
| 101 |
 |
Myers, Chris J. | Automatic abstraction for synthesis and verification of deterministic timed systems | This paper presents a new approach for synthesis and verification of asynchronous circuits by using abstraction. It attacks the state explosion problem by avoiding the generation of a flat state space for the whole design. Instead, it breaks the design into sub-blocks and conducts synthesis and veri... | | 2000 |
| 102 |
 |
Stevens, Kenneth | Automatic addition of reset in asynchronous sequential control circuits | Asynchronous finite state machines (AFSMs) usually require initialization to place them in a desired starting state. This normally occurs by toggling a reset signal upon power-up. This paper presents an algorithm to automatically generate power-up reset circuitry thus adding reset to an AFSM after t... | | 2014-01-01 |
| 103 |
 |
Tasdizen, Tolga; Whitaker, Ross T. | Automatic assembly of TEM mosaics and mosaic stacks using phase correlation | This paper discusses automatic Transmission Electron Microscopy (TEM) image registration, TEM slice assembly via tile mosaicking, and TEM volume assembly via slice to slice registration. Several algorithms are presented, including an algorithm for mosaic layout of an unordered set of tiles, an algor... | | 2007 |
| 104 |
 |
Tasdizen, Tolga; Foster, Norman L. | Automatic classification of alzheimer's desease vs. frontotemporal dementia: a spatial decision tree aprroach with FDG-PET | We introduce a novel approach for the automatic classification of FDG-PET scans of subjects with Alzheimers Disease (AD) and Frontotemporal dementia (FTD). Unlike previous work in the literature which focuses on principal component analysis and predefined regions of interest, we propose the combined... | | 2008 |
| 105 |
 |
Myers, Chris J. | Automatic derivation of timing constraints by failure analyis | Abstract. This work proposes a technique to automatically obtain timing constraints for a given timed circuit to operate correctly. A designated set of delay parameters of a circuit are first set to sufficiently large bounds, and verification runs followed by failure analysis are repeated. Each ver... | | 2002 |
| 106 |
 |
Tasdizen, Tolga | Automatic markup of neural cell membranes using boosted decision stumps | To better understand the central nervous system, neurobiologists need to reconstruct the underlying neural circuitry from electron microscopy images. One of the necessary tasks is to segment the individual neurons. For this purpose, we propose a supervised learning approach to detect the cell membra... | | 2009 |
| 107 |
 |
Stevens, Kenneth; Davis, Alan L. | Automatic synthesis of fast compact self-timed control circuits | We present a tool called MEAT which has been designed to automatically synthesize transistor level. CMOS, self-timed control circuits. MEAT has been used to specify and synthesize self-timed circuits for a fully self-timed 300,000 transistor communication coprocessor. The design is specified using f... | | 1993 |
| 108 |
 |
Stevens, Kenneth | Automatic synthesis of fast, compact self-timed control | An automated synthesis tool, called the Most Excellent Asynchronous Tool, or MEAT is presented. This tool has been used to specify and synthesize self-timed circuits for a fully self-timed 300,000 transistor communication co-processor. The Specification is done with stylized state diagrams. This is ... | | 1992 |
| 109 |
 |
Stevens, Kenneth; Myers, Chris J. | Average-case optimized technology mapping of one-hot domino circuits | This paper presents a technology mapping technique for optimizing the average-case delay of asynchronous combinational circuits implemented using domino logic and one-hot encoded outputs. The technique minimizes the critical path for common input patterns at the possible expense of making less commo... | | 1998 |
| 110 |
|
Myers, Chris J.; Stevens, Kenneth | Average-case optimized technology mapping of one-hot domino circuits* | This paper presents a technology mapping technique for optimizing the average-case delay of asynchronous combinational circuits implemented using domino logic and one-hot encoded outputs. The technique minimizes the critical path for common input patterns at the possible expense of making less commo... | | 1998 |
| 111 |
 |
Stringfellow, Gerald B. | Bandgap control of GaInP using Sb as a surfactant | The use of surfactants to control specific aspects of the vapor-phase epitaxial growth process is beginning to be studied for both the elemental and III/V semiconductors. To date, most reported surfactant effects for semiconductors relate to the morphology of the growing films. However, semicondu... | Band-gap energy; Growth process; Epitaxial growth | 1999-09-27 |
| 112 |
 |
Stevens, Kenneth | Bandwidth optimization in asynchronous NoCs by customizing link wire length | The bandwidth requirement for each link on a network-on-chip (NoC) may differ based on topology and traffic properties of the IP cores. Available bandwidth on an asynchronous NoC link will also vary depending on the wire length between sender and receiver. We explore the benefit to NoC performance ... | | 2010 |
| 113 |
 |
Mastrangelo, Carlos H. | Batch fabrication of flowable colorimetric pressure sensing particles via surface micromachining | The batch fabrication and test of artificial optical resonator slab-type micro particles (14 μm diameter, 0.7 μm gap) is presented as a means to map absolute pressure within microscopic environments. The pressure-sensing particles consist of a semi-transparent elastic polysilicon shell enclosi... | | 2010 |
| 114 |
 |
Stringfellow, Gerald B. | Bi surfactant control of ordering and surface structure in GaInP grown by organometallic vapor phase epitaxy | Studies the effect of the surfactant bismuth on the ordering and surface structure in GaInP layers grown by organometallic vapor phase epitaxy. Disordering caused by the addition of bismuth during growth; Changes in surface structure occurring with the disordering. | Thin films, Multilayered; Bismuth | 2000 |
| 115 |
 |
Stringfellow, Gerald B.; Shurtleff, James Kevin | Bi surfactant effects on ordering in GaInP grown by organometallic vapor-phase epitaxy | The effect of the isoelectronic surfactant Bi on surface structure and ordering has been studied for GaInP semiconductor alloys grown by organometallic vapor-phase epitaxy. A small amount of Bi trimethylbismuth added during growth is found to result in disordering for layers grown using conditions t... | Surfactant; Semiconductors; Trimethylbismuth | 2000 |
| 116 |
 |
Rieth, Loren W | Bi-layer encapsulation of Utah array based nerual interfaces by atomic layer deposited Al2O3 and parylene C | We present a novel coating method that combines atomic layer deposited Al2O3 and Parylene C for encapsulation of biomedical implantable devices, focusing on its application on Utah electrode array based neural interfaces. The alumina and Parylene C bi-layer encapsulated wired Utah electrode array sh... | | 2013-01-01 |
| 117 |
 |
Harrison, Reid R. | Biologically inspired analog IC for visual collision detection | We have designed and tested a single-chip analog VLSI sensor that detects imminent collisions by measuring radially expanding optic flow. The design of the chip is based on a model proposed to explain leg-extension behavior in flies during landing approaches. We evaluated a detailed version of thi... | Visual collision detection; VLSI | 2005-11 |
| 118 |
 |
Furse, Cynthia M. | Biomedical telemetry: today's opportunities and challenges | Biomedical telemetry is used today to communication with cardiac devices, insulin pumps, and a few other implantable devices that are on the order of 1-2" in diameter. Future systems promise advanced communication with cardiac, optical, neurological and auditory devices that are on the order of a ce... | | 2009-03 |
| 119 |
 |
Mathews, V. John | Blind identification of bilinear systems | Abstract This paper is concerned with the blind identification of bilinear systems excited by higher-order white noise. Unlike prior work that restricted the bilinear system model to simple forms and required the excitation to be Gaussian distributed, the results of this paper are applicable to a m... | | 2001 |
| 120 |
 |
Mathews, V. John | Blind identification of bilinear systems | Abstract-This paper is concerned with the blind identification of a class of bilinear systems excited by non-Gaussian higher order white noise. The matrix of coefficients of mixed input-output terms of the bilinear system model is assumed to be triangular in this work. Under the additional assumptio... | | 2003 |
| 121 |
 |
Mathews, V. John | Blind identification of QAM signals using a likelihood-based algorithm | This paper presents a method for automatically identifying different QAM modulations. This method identifies the modulation type as the hypothesis for which the likelihood function of the amplitudes of the received signal is the maximum. The derivation of the likelihood functions assumes additive wh... | | 2013-01-01 |
| 122 |
 |
Tasdizen, Tolga | Boundary estimation from intensity/color images with algebraic curve models | A new concept and algorithm are presented for noniterative robust estimation of piecewise smooth curves of maximal edge strength in small image windows - typically 8 x 8 to 32 x 32. This boundary-estimation algorithm has the nice properties that it uses all the data in the window and thus can find l... | | 2000 |
| 123 |
 |
Harrison, Reid R. | Brain-machine interface, unplugged | In experiments and even limited human clinical trials, electrode arrays implanted on the brain's surface have given monkeys and humans the ability to move objects with their thoughts. The experiments are proof that brain-computer interfaces could improve the lives of severely paralyzed people. But... | Wireless neural implants; Brain-computer interface | 2009-01-01 |
| 124 |
 |
Furse, Cynthia M. | Broadband and multiband antenna design using the genetic algorithm to create amorphous shapes using ellipses | A method is demonstrated for generating compact, broadband and multiband antennas using ellipses to create new amorphous shapes with greater bandwidth and less return loss that previously demonstrated. Four designs are presented including a tri-band patch antenna optimized for low reflection loss a... | Broadband antenna design; Multiband antenna design; Ellipses | 2006-10 |
| 125 |
 |
Stevens, Kenneth | CA-BIST for asynchronous circuits: a case study on the RAPPID asynchronous instruction length decoder | This paper presents a case study in low-cost noninvasive Built-In Self Test (BIST) for RAPPID, a largescale 120,000-transistor asynchronous version of the Pentium® Pro Instruction Length Decoder, which runs at 3.6 GHz. RAPPID uses a synchronous 0.25 micron CMOS library for static and domino lo... | | 2000 |
| 126 |
 |
Stevens, Kenneth | CAD directions for high performance asynchronous circuits | This paper describes a novel methodology for high performance asynchronous design based on timed circuits and on CAD support for their synthesis using Relative Timing. This methodology was developed for a prototype iA32 instruction length decoding and steering unit called RAPPID ("Revolving Asynchro... | | 1999 |
| 127 |
 |
Furse, Cynthia M.; Gandhi, Om P. | Calculation of electric fields and currents induced in a millimeter-resolution human model at 60 Hz using the FDTD method with a novel time-to-frequency-domain conversion | The finite-difference time-domain (FDTD) method has previously been used to calculate induced currents in anatomically based models of the human body at frequencies ranging from 20 to 915 MHz and resolutions down to 1.31 cm . Calculations at lower frequencies and higher resolutions have been preclu... | Finite-difference time-domain method; FDTD; Induced currents; Human body model | 1996 |
| 128 |
 |
Furse, Cynthia M. | Capacitance and inductance sensor circuits for detecting the lengths of open- and short-circuited wires | The length of an open- or short-circuited wire is linearly proportional to the capacitance or inductance of the wire, respectively. Several types of simple and inexpensive circuits are introduced to measure these values. Open-circuited (capacitance) measurements are very effective. Short-circuited ... | Aging aircraft wire; Capacitance sensors; Fault detection; Inductance sensors | 2009-08 |
| 129 |
 |
Stevens, Kenneth | Capacitive ionic current measurement in a polymer-electrolyte transistor | Organic transistors that use dissolved ions to conduct current are able to reproduce the current-voltage characteristics of semiconductor transistors. The polymer-electrolyte transistor (PET) consists of a three-source acid-base reaction system, where a polymer gel separates the three source electro... | | 2008 |
| 130 |
 |
Myers, Chris J.; Harrison, Reid R.; Schlegel, Christian | Cell library for automatic synthesis of analog error control decoders | This paper presents a cell library for automatic synthesis of analog error control decoders. By using some basic cells, analog ermr control decoders can be automatically synthesized. Also, using automatic synthesis based on this cell library, the circuit performance is not degraded and the circuit i... | | 2002 |
| 131 |
 |
Harrison, Reid R.; Myers, Chris J.; Schlegel, Christian | Cell library for automatic synthesis of analog error control decoders | This paper presents a cell library for automatic synthesis of analog error control decoders. By using some basic cells, analog ermr control decoders can be automatically synthesized. Also, using automatic synthesis based on this cell library, the circuit performance is not degraded and the circuit i... | | 2002 |
| 132 |
 |
Khan, Faisal Habib | Challenges and solutions in measuring computer power supply efficiency for 80 PLUS® certification | This paper discusses the techniques, challenges, and results of measuring computer power supply (CPS) efficiency, power factor (PF), and input harmonic currents for the 80 PLUS® program since its beginning in 2002. To date, over 750 power supplies have been tested with many certified for the 80 PL... | | 2009-02 |
| 133 |
 |
Furse, Cynthia M.; Cotter, Neil E. | Challenges in curriculum adaptation across institutions of higher education: international and national student transfer | The challenges associated with student transfer between institutions of higher education are investigated. The Utah System of Higher Education (USHE) requires that undergraduate courses from non-ABET accredited institutions are recognized across public universities and colleges in Utah Based on empi... | | 2006 |
| 134 |
 |
Furse, Cynthia M. | Challenges with optically transparent patch antennas | In this paper, antennas made out of transparent conducting oxides (TCOs) are explored. The optical transparency of transparent conducting oxides is achieved through thin-film depositions on substrates. However, thin-film depositions create a new set of electrical challenges that require a full under... | | 2012-01-01 |
| 135 |
 |
Blair, Steven | Channel routing for integrated optics | Increasing scope and applications of integrated optics necessitates the development of automated techniques for physical design of optical systems. This paper presents an automated, planar channel routing technique for integrated optical waveguides. Integrated optics is a planar technology and lacks... | | 2013-01-01 |
| 136 |
 |
Blair, Steven | Characterization of a 3D optrode array for infrared neural stimulation | This paper characterizes the Utah Slant Optrode Array (USOA) as a means to deliver infrared light deep into tissue. An undoped crystalline silicon (100) substrate was used to fabricate 10×10 arrays of optrodes with rows of varying lengths from 0.5mm to 1.5mm on a 400-μm pitch. Light delivery from ... | | 2012-01-01 |
| 137 |
 |
Khan, Faisal Habib | Characterization of aging process in power converters using spread spectrum time domain reflectometry | This paper aims to find a new technique to predict the state of health of power converters by characterizing the most vulnerable components in the converter without affecting the normal circuit operation. Spread spectrum time domain reflectometry (SSTDR) can detect most of the aged components inside... | | 2012-01-01 |
| 138 |
 |
Stevens, Kenneth | Characterization of asynchronous templates for integration into clocked CAD flows | Asynchronous circuit design can result in substantial benefits of reduced power, improved performance, and high modularity. However, asynchronous design styles are largely incompatible with clocked CAD, which has prevented wide-scale adoption. The key incompatibility is timing. Thus most commercial... | | 2009 |
| 139 |
 |
Mastrangelo, Carlos H. | Characterization of electrical interferences for ground reaction sensor cluster | This paper presents the characterization of electrical interferences for a high-resolution error-correcting biomechanical ground reaction sensor cluster (GRSC), developed for improving inertial measurement unit (IMU) position sensing accuracy. The GRSC is composed of 13 x 13 sensing nodes, which can... | | 2012-01-01 |
| 140 |
 |
Stringfellow, Gerald B.;Inglefield, Colin E.;Taylor, P. Craig | Characterization of unicompositional GaInP2 ordering heterostructures grown by variation of V/III ratio | Photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopies are employed to investigate single heterostructures based on two GaInP2 layers that have the same composition but different degrees of order on the cation sublattice. Four sample configurations are studied: two complemen... | Heterostructures; Growth parameters; Growth temperature | 1997 |
| 141 |
 |
Stringfellow, Gerald B.; Sadwick, Laurence P. | Chemical beam epitaxial growth of InP and GaP by using tertiarybutylbis (dimethylamino) phosphine | We report the growth of indium phosphide (InP) by using a chemical beam epitaxy (CBE) technique with the group V source tertiarybutylbis (dimethylamino) phosphine (TBBDMAP). The photoluminescence spectra at 15 K showed that the intensity of a peak attributed to impurity recombination and the FWHM i... | Chemical beam epitaxy; CBE; InP; GaP; Tertiarybutylbis (Dimethylamino) Phosphine; Gallium phosphide; TBBDMAP | 2007 |
| 142 |
 |
Stevens, Kenneth | Clocked and asynchronous FIFO characterization and comparison | Heterogeneous blocks, IP reuse, network-on-chip interconnect, and multi-frequency design are becoming more prevalent in integrated circuit design. Communication amongst these blocks typically employs first-in-first-out (FIFO) buffering for flow control. This paper characterizes and evaluates severa... | | 2009 |
| 143 |
 |
Myers, Chris J. | CMOS analog map decoder for (8,4) hamming code | Abstract-Design and test results for a fully integrated translinear tail-biting MAP error-control decoder are presented. Decoder designs have been reported for various applications which make use of analog computation, mostly for Viterbi-style decoders. MAP decoders are more complex, and are necess... | | 2004 |
| 144 |
 |
Harrison, Reid R. | CMOS imager with on-chip temporal filtering for motion pre-processing | Robust motion detection algorithms such as the motion energy model require temporal filtering at the pixel level. We have designed and tested a CMOS imager with integrated, pixel-level temporal filtering necessary for motion detection. This temporal filtering enhances transients and provides a ... | | 2002-01-01 |
| 145 |
 |
Harrison, Reid R. | CMOS programmable analog memory-cell array using floating-gate circuits | The complexity of analog VLSI systems is often limited by the number of pins on a chip rather than by the die area. Currently, many analog parameters and biases are stored off-chip. Moving parameter storage on-chip could save pins and allow us to create complex programmable analog systems. In this ... | Computer chips; VLSI; Computer memory; Potentiometers; CMOS circuits; Floating gate circuit | 2001-01 |
| 146 |
 |
Khan, Faisal Habib | Commercial and industrial applications getting ready for direct-current power distribution | This paper describes design trends in several classes of power-electronic appliances that will increase the appeal for distributing dc power in buildings. In the commercial sector information technology (IT) power conversion architectures are moving from multi- to single-voltage supplies, initially... | Direct current power distribution; Commercial applications | 2004-01-01 |
| 147 |
 |
Furse, Cynthia M. | Commission B (fields and waves) international survey about EM education | Commission B has the terms of reference "Fields and waves", which have been well established on the basis of electromagnetism and Maxwell's equations. Experts in this area need a firm basis in mathematics and physics as well as their historical background; though the subjects are sometimes too heav... | | 2005 |
| 148 |
 |
Stevens, Kenneth | Comparing energy and latency of asynchronous and synchronous NoCs for embedded SoCs | Power consumption of on-chip interconnects is a primary concern for many embedded system-on-chip (SoC) applications. In this paper, we compare energy and performance characteristics of asynchronous (clockless) and synchronous network on-chip implementations, optimized for a number of SoC designs. We... | | 2010 |
| 149 |
 |
Furse, Cynthia M.; Lazzi, Gianluca; Gandhi, Om P. | Comparison of FDTD computed and measured radiation patterns of commercial mobile telephones in presence of the human head | In this letter, finite-difference time-domain (FDTD) computed radiation patterns of mobile telephones are carefully compared with those measured in our laboratory. The question on the capability of the FDTD method to correctly predict the radiated electromagnetic fields of today's structurally comp... | FDTD; Finite-difference time-domain; Mobile antennas | 1998-01-01 |
| 150 |
 |
Stringfellow, Gerald B. | Compositional modulation and ordering in semiconductors | The science of materials as a specific discipline is a relatively modern development. Within this rather modern field, the study of semiconductor materials is an even more recent development. Modern textbooks on materials science focus primarily on the properties of metals and second on the properti... | Materials scientists; Controlled ordering | 1997 |
| 151 |
 |
Stringfellow, Gerald B. | Compositional ordering in semiconductor alloys | Compositional ordering has been observed in a wide variety of III/V semiconductor alloys as well as in SiGe alloys. The thermodynamic driving force is now understood in terms of minimization of the microscopic strain energy of the bonds in the solid. However, the mechanism leading to the specific o... | Semiconductor alloys; Transmission-electron-diffraction pattern; Organometallic Vaper-phase epitaxy; Cathodoluminescence | 1993 |
| 152 |
 |
Simpson, Jamesina J. | Computational and experimental study of a microwave electromagnetic bandgap structure with waveguiding defect for potential use as a bandpass wireless interconnect | As clock rates continue to rise, problems with signal integrity, cross-coupling, and radiation may render impractical the baseband metallic interconnects presently used in computers. A potential means to address this problem is to use bandpass wireless interconnects operating at millimeter-wave cent... | | 2004-01-01 |
| 153 |
 |
Tasdizen, Tolga; Jones, Bryan W.; Whitaker, Ross T. | Computational framework for ultrastructural mapping of neural circuitry | Circuitry mapping of metazoan neural systems is difficult because canonical neural regions (regions containing one or more copies of all components) are large, regional borders are uncertain, neuronal diversity is high, and potential network topologies so numerous that only anatomical ground truth c... | | 2009 |
| 154 |
 |
Mathews, V. John; Schlegel, Christian | Computationally efficient multiuser detection for coded CDMA | Abstract: Computationally efficient multiuser detection for coded asynchronous CDMA systems is investigated. The particular receiver studied is a near-far resistant multi-user detector known as the projection receiver (PR) [originally developed in [1, 2]]. The PR perfoms multiple access interference... | | 1997 |
| 155 |
 |
Furse, Cynthia M.; Gandhi, Om P. | Computations of SAR distributions for two anatomically-based models of the human head using CAD files of commercial telephones and the parallelized FDTD code | The Finite Difference Time Domain (FDTD) method is well suited for the computation of bio-electromagnetic effects and has become the method of choice for most researchers in this area. There does however remain some limitations on its use. Firstly the FDTD method requires large amounts of memory and... | Finite-difference time-domain method; FDTD; SAR distributions; CAD files | 1997 |
| 156 |
 |
Furse, Cynthia M.; Gandhi, Om P. | Computations of SAR distributions or two anatomically based models of the human head using CAD files of commercial telephones and the parallelized FDTD code | A method for importing data from computer-aided design (CAD) files for a mobile telephone into finite-difference time-domain (FDTD) simulation software is described. Although the FDTD method is well suited for the bio-electromagnetic simulations and has become the method of choice for most research... | Specific absorption rates; SAR; CAD files; FDTD; Finite-difference time-domain | 1998-01-01 |
| 157 |
 |
Stevens, Kenneth | Concurrency reduction of untimed latch protocols - theory and practice | A systematic investigation into concurrency reduction of untimed asynchronous 4-phase latch controllers is reported. Starting with a state graph that exhibits maximal concurrency, rules are provided for systematically reducing its states and thereby curtailing its behaviors. The rules predict liven... | | 2010 |
| 158 |
 |
Stevens, Kenneth | Congruent weak conformance | Congruent weak conformance is a property between formal models capturing the desired relationship between a specification and its implementation by allowing unused and redundant circuitry and tolerating unspec4jied behavior in the unreachable state space. By providing greater flexibility in design t... | | 2001 |
| 159 |
 |
Stringfellow, Gerald B. | Control and characterization of ordering in GaInP | Gae,,In,,P layers have been grown by organometallic vapor phase epitaxy on GaAs substrates with [llO]-oriented grooves on the surface that have an important effect on the formation of Cu-Pt ordered structures during growth. In this work, the groove shape is demonstrated to be critically important... | Vapor phase epitaxy; Ordered structure; Cathodoluminescence spectroscopy | 1993-06-28 |
| 160 |
 |
Stringfellow, Gerald B. | Control of ordering in Ga0.5In0.5P using growth temperature | The kinetic processes leading to ordering in Gas,, In o.4P8 have been studied by observing the effects of substrate misorientation (O-9), growth rate (0.1-0.5), and substrate temperature (570- 670 "C) during growth. The ordered structure and degree of ordering are determined using transmission elec... | Ordering Structure; Growth Temprature; Growth Rate | 1994 |
| 161 |
 |
Stringfellow, Gerald B. | Correlation between surface structure and ordering in GaInP | Ga and In atoms in Ga0.52In0.48P layers spontaneously segregate to form alternating In- and Ga-rich {111} monolayers during organometallic vapor phase epitaxial (OMVPE) growth on (001) oriented GaAs substrates, thus forming the CuPt ordered structure. This ordering phenomenon is believed to be drive... | Transformations; Absorbtion spectra; Surface Properties | 1996 |
| 162 |
 |
Myers, Chris J. | Covering conditions and algorithms for the synthesis of speed-independent circuits | Abstract-This paper presents theory and algorithms for the synthesis of standard C-implementations of speed-independent circuits. These implementations are block-level circuits which may consist of atomic gates to perform complex functions in order to ensure hazard freedom. First, we present Boolean... | | 1998 |
| 163 |
 |
Furse, Cynthia M.; Cherkaev, Elena A. | Cross-borehole delineation of a conductive ore deposit in a resistive host-experimental design | The finite-difference time-domain method is used for high-resolution full-wave analysis of cross-borehole electromagnetic surveys of buried nickel sulfide deposits. The method is validated against analytical methods for simple cases, but is shown to be a valuable tool for analysis of complicated ... | Finite-difference time-domain; FDTD; Cross-borehole; Electromagnetic surveys; Nickel sulfide deposits; Conductive ores; Resistive host | 2001-01-01 |
| 164 |
 |
Blair, Steven | Crossing-aware channel routing for photonic waveguides | Abstract-Silicon photonics technology is progressing at a rapid pace. Despite greatly expanded manufacturing capability, physical design of integrated optical circuits currently lacks the level of automation found in VLSI design. A key component of integrated optic design is waveguide routing; howev... | | 2013-01-01 |
| 165 |
 |
Simpson, Jamesina J. | Current and future applications of 3-D global earth-ionosphere waveguide models based on the full-vector maxwells equations FDTD method | Advances in computing technologies in recent decades have provided a means of generating and performing highly sophisticated computational simulations of electromagnetic phenomena. In particular, just after the turn of the 21st century, improvements to computing infrastructures provided for the firs... | | 2009-01-01 |
| 166 |
 |
Furse, Cynthia M.; Gandhi, Om P. | Currents induced in the human body for exposure to ultrawideband electromagnetic pulses | The frequency-dependent finite-difference time-domain [(FD)2TD] method is used to calculate internal electric fields and induced current densities in a 1.31-cm resolution anatomically-based model of the human body for exposure to ultrawideband vertically polarized electromagnetic pulses (EMP's). Fr... | FDTD; Finite-difference time-domain; Ultrawideband electromagnetic pulses; Induced currents | 1997-01-01 |
| 167 |
 |
Tasdizen, Tolga; Whitaker, Ross T. | Curvature-based transfer functions for direct volume rendering: methods and applications | Direct volume rendering of scalar fields uses a transfer function to map locally measured data properties to opacities and colors. The domain of the transfer function is typically the one-dimensional space of scalar data values. This paper advances the use of curvature information in multi-dimensio... | | 2003 |
| 168 |
 |
Harrison, Reid R. | Custom multielectrode array with integrated low-noise preamplifiers | Multielectrode arrays (MEAs) have emerged as a leading technology for extracellular neural recording and stimulation. Their large number of recording sites promises to yield important insight into neural systems. As the density of recording sites increases, interfacing to each electrode becomes inc... | Electrode; Multielectrode arrays (MEA); Neural recording; Extracellular recording; Low-noise | 2003-01-01 |
| 169 |
 |
Stringfellow, Gerald B. | Deep electron traps in organometallic vapor phase grown AlGaAs | Deep electron traps have been studied by means of deep level transient spectrosocopy in type nominally undoped and interntionally te doped Al Ga As epitaxial layers which were grown by vapor phase epitaxy from organometallic compounds (OMVPE). Three main deep electron levels are present in undoped m... | Vapor phase epitaxy; Shallow impurity identity; Optoelectronic device performance | 1980 |
| 170 |
 |
Khan, Faisal Habib | Deriving new topologies of DC-DC converters featuring basic switching cells | This paper will introduce the two basic switching cells, P-cell and N-cell, and their applications in different power electronic circuits. These basic cells have one switching element and one diode. The P-cell is the mirror circuit of the N-cell and vice-versa, and this paper suggests that any powe... | DC-DC converters; P-cell; N-cell; Switching cells; Cúk converters | 2006-07 |
| 171 |
 |
Mastrangelo, Carlos H. | Design and characterization of electronic sensing system for a 13 × 13 biomechanical ground reaction sensor array | This paper presents the design and characterization of an electronic sensing system interfaced with a high-density flexible biomechanical ground reaction sensor array (GRSA). The prototype system can be incorporated into a personal boot heel to measure real-time ground force, shear strain and sole d... | | 2013-01-01 |
| 172 |
 |
Harrison, Reid R. | Design and implementation of multipattern generators in analog VLSI | In recent years, computational biologists have shown through simulation that small neural networks with fixed connectivity are capable of producing multiple output rhythms in response to transient inputs. It is believed that such networks may play a key role in certain biological behaviors such as d... | | 2006-07 |
| 173 |
 |
Khan, Faisal Habib | Design and simulation of contour mode MEMS resonator on Si for power converters | Microelectromechanical systems (MEMS) resonators on Si have the potential to replace the discrete passive components in a power converter. These devices not only can reduce the size and weight of the converter but also can facilitate the implementation of power converter on a chip. In this paper, a ... | | 2013-01-01 |
| 174 |
 |
Harrison, Reid R.;Normann, Richard A. | Design and testing of an integrated circuit for multi-electrode neural recording | We have developed a single-chip neural recording system with wireless power delivery and telemetry. The 0.5-μm CMOS IC is designed to be bonded to the back of a 100-channel Utah Electrode Array. A pad near each amplifier allows connection of the chip to the MEMS electrode array. The complete Integr... | recording; Neural recording; Utah Electrode Array; Multielectrode arrays (MEA); Telemetry; Spike detectors; Wireless | 2007-01 |
| 175 |
 |
Myers, Chris J. | Design of a genetic muller C-element | Synthetic biology uses engineering principles to design circuits out of genetic materials that are inserted into bacteria to perform various tasks. While synthetic combinational Boolean logic gates have been constructed, there are many open issues in the design of sequential logic gates. One such g... | | 2007 |
| 176 |
 |
Khan, Faisal Habib | Design of drives for inverter-assisted induction generators | This paper investigates the control of power generation using two-phase squirrel-cage induction machines, where the load is connected to one stator winding and the load voltage is controlled through the other winding. The concept can be applied to three-phase machines as well. A state-space model of... | | 2012-01-01 |
| 177 |
 |
Furse, Cynthia M. | Design of implantable microstrip antenna for communication with medical implants | The objective of this paper is to design a microstrip patch antenna for communication with medical implants in the 402-405-MHz Medical Implant Communications Services band. Microstrip antenna design parameters are evaluated using the finite-difference time-domain method, and are compared to measure... | Biocompatible antenna; Medical Implant Communications Services; MICS; Pacemaker antenna; Medical implants | 2004-08 |
| 178 |
 |
Harrison, Reid R. | Design of integrated circuits to observe brain activity | The ability to monitor the simultaneous electrical activity of multiple neurons in the brain enables a wide range of scientific and clinical endeavors. Recent efforts to merge miniature multielectrode neural recording arrays with integrated electronics have revealed significant circuit design chall... | Amplifiers; Analog integrated circuits; Biomedical signal processing; Low-power circuit design; Neural recording; Subthreshold circuit design; Neural signals; Brain activity | 2008-01-01 |
| 179 |
 |
Mathews, V. John | Design of low-delay nonuniform pseudo QMF banks | ABSTRACT This paper presents a method for designing low-delay nonuniform pseudo QMF banks. The method is motivated by the work of Li, Nguyen and Tantaratana, in which the nonuniform filter bank is realized by combining an appropriate number of adjacent subbands of a uniform pseudo QMF filter ban... | | 2006 |
| 180 |
 |
Harrison, Reid R. | Designing efficient inductive power links for implantable devices | Due to limited battery life and size limitations, many implantable biomedical devices must be powered inductively. Because of weak coupling between implanted and external coils, obtaining high power efficiency is a challenge. Previous authors have addressed the issue of optimizing power efficiency ... | Inductive power links; Planar spiral coils | 2007-01-01 |
| 181 |
 |
Stevens, Kenneth | Designing parallel specifications in CCS | We describe a style of specifying concurrent systems based upon the parallel composition operatorof CCS and apply it to several asynchronous hardware examples. | | 1993 |
| 182 |
 |
Mathews, V. John | Detection and estimation with fixed lag for abruptly changing systems | The problem of state estimation and system structure detection for discrete-time stochastic systems with parameters which may switch among a finite set of values is considered. The switchings are modeled by a semi-Markov, or Markov, chain with known transition statistics. A fixed time delay (lag) is... | | 1983 |
| 183 |
 |
Mastrangelo, Carlos H. | Detection of biomolecular binding by fourier-transform SPR | Surface plasmon resonance (SPR) is a widely used label-free detection technique that has many applications in drug discovery, pharmacokinetics, systems biology and food science. The SPR technique measures the dynamics of a biomolecular interaction at a surface, yielding kinetic association and diss... | | 2010 |
| 184 |
 |
Simpson, Jamesina J. | Detection of embedded ultra-subwavelength-thin dielectric features using elongated photonic nanojets | Photonic nanojets have been previously shown (both theoretically and experimentally) to be highly sensitive to the presence of an ultra-subwavelength nanoscale particle within the nanojet. In the present work, photonic nanojets elongated by almost an order of magnitude (relative to the latest previo... | | 2011-01-01 |
| 185 |
 |
Tasdizen, Tolga | Detection of salient image points using principal subspace manifold structure | This paper presents a method to find salient image points in images with regular patterns based on deviations from the overall manifold structure. The two main contributions are that: (i) the features to extract salient point are derived directly and in an unsupervised manner from image neighborhoo... | | 2010 |
| 186 |
 |
Myers, Chris J. | Direct synthesis of timed asynchronous circuits | This paper presents a new method to synthesize timed asynchronous circuits directly from the specification without generating a state graph. Our synthesis procedure begins with a deterministic signal transition graph specification to which timing constraints can be added. First, a timing analysis ex... | | 1992 |
| 187 |
 |
Myers, Chris J. | Direct synthesis of timed asynchronous circuits | This paper presents a new method to synthesize timed asynchronous circuits directly from the specification without generating a state graph. The synthesis procedure begins with a deterministic graph specification with timing constraints. A timing analysis extracts the timed concurrency and timed cau... | | 1999 |
| 188 |
 |
Myers, Chris J. | Direct synthesis of timed asynchronous circuits | This paper presents a new method to synthesize timed asynchronous circuits directly from the specification without generating a state graph. Our synthesis procedure begins with a deterministic signal transition graph specification to which timing constraints can be added. First, a timing analysis ex... | | 1999 |
| 189 |
 |
Stringfellow, Gerald B. | Dislocations in GaAs17-xPx | Dislocations, their origins, and their effects on photoluminescence efficiency have been studied in GaAs1-xPx single crystals grown by vapor phase epitaxy. Dislocations were observed using etch pit, optical-transmission microscopy, and x-ray topography techniques. Two types of dislocations are grown... | Photoluminescence efficiency; Growth mechanism; Optical transmission microscopy | 1969 |
| 190 |
 |
Stringfellow, Gerald B. | Doping studies of Ga0.5In0.5P organometallic vapor-phase epitaxy | Presents doping studies of gallium[sub0.5] indium[sub0.5] phosphorus organometallic vapor-phase epitaxy. Distribution coefficient of indium; Description of growth conditions; Case of poor growth morphology for gallium[sub0.5] indium[sub0.5] phosphorus. | Phosphorus; Gallium; Doping | 1986 |
| 191 |
 |
Furse, Cynthia M. | Down to the wire | As today's military and commercial aircraft age past their teen years, the many kilometers of wiring buried deep within their structures begin to crack and fray. Once thought to be rare and benign, such faults are found by the hundreds in a typical aircraft. Unlike obvious cracks in a wing or an e... | Aging wiring; Wire fault location; Aging wire detection; Smart wire systems | 2001-01-01 |
| 192 |
 |
Stringfellow, Gerald B.; Zhu, Jing Yi; Liu, Feng | Dual-surfactant effect to enhance p-type doping in III-V semiconductor thin films | Surfactant effects are usually achieved by the addition of a single surface element. We demonstrate by first-principles calculations a dual-surfactant effect of Sb and H on enhancing Zn doping in organometallic vapor phase epitaxially grown GaP thin films. The combined effects of Sb and H lower sig... | Surfactants; p-type doping | 2008-11 |
| 193 |
 |
Stevens, Kenneth | Dynamic gates with hysteresis and configurable noise tolerance | Dynamic logic can provide significant performance and power benefit compared to implementations using static gates. Unfortunately dynamic gates have traditionally suffered from low noise margins, which limits their reliability. A new logic family, called complementary dynamic logic (CDL), is prese... | | 2007 |
| 194 |
 |
Tasdizen, Tolga | Edge enhanced spatio-temporal constrained reconstruction of undersampled dynamic contrast enhanced radial MRI | There are many applications in MRI where it is desirable to have high spatial and high temporal resolution. This can be achieved by undersampling of k-space and requires special techniques for reconstruction. Even if undersampling artifacts are removed, sharpness of the edges can be a problem. We pr... | | 2010 |
| 195 |
 |
Myers, Chris J. | Effcient verification of hazard-freedom in gate-level timed asynchronous circuits | This paper presents an efficient method for verifying hazard freedom in timed asynchronous circuits. Timed circuits are a class of asynchronous circuits that utilize explicit timing information fur optimization throughout the entire design process. In asynchronous circuits, correct operation require... | | 2003 |
| 196 |
 |
Stringfellow, Gerald B. | Effect of growth rate on step structure and ordering in GaInP | CuPt ordering is widely observed in GaInP epitaxial layers grown by organometallic vapor phase epitaxy. The formation of this spontaneously ordered structure during epitaxial growth is intimately related to the atomic-scale physical processes occurring on the surface, specifically surface reconst... | Atomic force microscopy; Organometallic vapor phase; Crystallographic plane | 1997 |
| 197 |
 |
Stringfellow, Gerald B. | Effect of oxygen incorporation in semi-insulating (AlxGa1-x)yIn1-yP | Discusses a study conducted on oxygen-doped, semi-insulating layers of (aluminum-gallium) indium phosphide grown on gallium arsenide using organometallic vapor phase epitaxy. Effect of oxygen doping on semi-insulating layers of the substance; Secondary-ion mass spectrometry measurements; Measured co... | Inactive interstitial atoms; Energy-dispersive spectoscopy; intentional oxygen | 1992 |
| 198 |
 |
Stringfellow, Gerald B. | Effect of step structure on ordering in GaInP | Examines the effect of step structure on ordering in gallium indium phosphite (GaInP) using atomic force microscopy. Coverage of the surface by islands several monolayers in height with elongated direction; Formation of the edges of the islands; Role of the observations in explaining the nature of t... | Gallium indium phosphite (GaInP); Twin boundaries | 1995-11-12 |
| 199 |
 |
Stringfellow, Gerald B. | Effect of surfactant Sb on carrier lifetime in GaInP epilayers | Samples of Ga0.52In0.48P grown on (001) GaAs with small amounts of surfactant Sb were investigated using time-resolved photoluminescence. All samples show a luminescence that may be fit to a two-stage exponential decay with a fast and a slow lifetime. For growth without Sb (Sb/III(v)(0), the sample ... | Semiconductor ternary alloys; Epitaxial layer; Microstructures | 2002-01-01 |
| 200 |
 |
Stringfellow, Gerald B.; Rieth, Loren W. | Effects of Br and Cl on organometallic vapor phase epitaxial growth and ordering in GaInP | CuPt ordering in GaInP has significant effects on the electrical and optical properties. In fact, band gap reductions as large as 160 meV are potentially useful for devices. Thus, control of ordering is important. This has led to the investigation of surfactants that affect the surface processes d... | Band gap reductions; Surfactants; Surface processes | 2004 |
