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1 Mastrangelo, Carlos H.From chips to dust: the MEMS shatter secure chipThis paper presents the implementation of a transience mechanism for silicon microchips via low-temperature post-processing steps that transform almost any electronic, optical or MEMS substrate chips into transient ones. Transience is achieved without any hazardous or explosive materials. Triggered ...2014-01-01
2 Myers, Chris J.Formal verification of genetic circuitsResearchers are beginning to be able to engineer synthetic genetic circuits for a range of applications in the environmental, medical, and energy domains [1]. Crucial to the success of these efforts is the development of methods and tools to verify the correctness of these designs. This verification...2012-01-01
3 Mastrangelo, Carlos H.MEMS-based hemispherical resonator gyroscopesThis paper introduces a fabrication technique that uses planar MEMS micromachining processes to produce hemispherical resonating shells for gyroscopes. The hemispheres exhibit a quality factor in excess of 20,000 with resonant frequencies in the range of 20 kHz for the 4-node wineglass mode. The fab...2012-01-01
4 Mathews, V. JohnEqualization of excursion and current-dependent nonlinearities in loudspeakersThis paper presents a novel equalizer for nonlinear distortions in direct-radiator loudspeakers in a closed cabinet by constructing an exact inverse of an electro-mechanical model of the loudspeaker. This exact inverse compensates for distortions introduced by excursion and current-dependent nonline...2014-01-01
5 Stevens, KennethEnhanced SDC support for relative timing designs2009-01-01
6 Simpson, Jamesina J.FDTD modeling of a novel ELF radar for major oil deposits using a three-dimensional geodesic grid of the earth-ionosphere waveguideThis paper reports the first application of an optimized geodesic, three-dimensional (3-D) finite-difference time-domain (FDTD) grid to model impulsive, extremely low-frequency (ELF) electromagnetic wave propagation within the entire Earth-ionosphere cavity. This new model, which complements our pre...2006-01-01
7 Khan, Faisal HabibFabrication processes and experimental validation of a planar PV power system with monolithically embedded power convertersThis paper summarizes the research outcome intended to identify the most suitable device architecture and its implementation for cell-level power conversion in a photovoltaic (PV) system. The fabrication process to accommodate the power conditioning unit with the PV cells using the same process run ...2012-01-01
8 Simpson, Jamesina J.FDTD calculations of the diffraction coefficient of vibrating wedgesThe full-vector Maxwell's equations finite-difference time-domain (FDTD) method is employed to calculate diffraction coefficients of vibrating conducting and dielectric wedges. Two-dimensional FDTD models of right-angle wedges are constructed to include total-field scattered-field incident plane-wav...2011-01-01
9 Blair, StevenImplantable glass optrodes for deep-tissue light delivery3D needle-type glass waveguide arrays were developed as potentially compact neural interfaces for light delivery in deep-tissue. As much as 90% of input light is transmitted via a single optrode to depths >1mm in tissue. Light emission profiles from the optrode tips into tissue can exhibit beam widt...2014-01-01
10 Myers, Chris J.LEMA: A tool for the formal verification of digitally-intensive analog/mixed-signal circuitsThe increasing integration of analog/mixed-signal (AMS) circuits into system designs has further complicated an already difficult verification problem. Recently, formal verification, which has been successful in the purely digital domain, has made some in-roads in the AMS domain. This paper describe...2014-01-01
11 Furse, Cynthia M.Learning to teach in the flipped classroomThe flipped classroom has gained tremendous recent popularity. This paper reports on a new faculty training program for helping and mentoring faculty to learn to teach with the flipped classroom. Several modules were piloted in 2013-2014, including active teaching, how to create video lectures, cont...2014-01-01
12 Rieth, Loren WExcimer-laser deinsulation of Parylene-C coated Utah electrode array tipsUtah electrode arrays (UEAs) are highly effective to measure or stimulate neural action potentials from the central or peripheral nervous system. The measured signals can be used for applications including control of prosthetics (recording) and stimulation of proprioceptive percepts. The UEAs are co...2012-01-01
13 Furse, Cynthia M.Measurement and modeling of interference for multiple antenna systemThis paper provides a detailed signal model based on network theory to predict the multi-antenna capacity in the presence of co- and adjacent channel interference. This model expands on previous channel models by including the simultaneous effects of interference, antenna matching, efficiency, direc...2010-01-01
14 Mathews, V. JohnNeural decoding using a nonlinear generative model for brain-computer interfaceKalman filters have been used to decode neural signals and estimate hand kinematics in many studies. However, most prior work assumes a linear system model, an assumption that is almost certainly violated by neural systems. In this paper, we show that adding nonlinearities to the decoding algorithm ...2014-01-01
15 Khan, Faisal HabibOn the design of efficient magnetic coils for the stimulation of peripheral nervesNeural stimulators are the key building blocks of current neuroprosthetic systems, such as cochlear and retinal implants. Due to direct current injections and foreign body reactions, conventional current passing electrodes suffer from reduced performance and reduced lifetimes. However, magnetic fiel...2013-01-01
16 Khan, Faisal HabibPV faults: Overview, modeling, prevention and detection techniquesRecent PV faults and subsequent fire-hazards on April 5, 2009, in Bakersfield, California, and April 16, 2011, in Mount Holly, North Carolina provide evidence of a lack of knowledge among PV system manufacturers and installers about different PV faults. The conducted survey within the scope of this ...2013-01-01
17 Khan, Faisal HabibPV ground-fault detection using spread spectrum time domain reflectometry (SSTDR)A PV ground-fault detection technique using spread spectrum time domain reflectometry (SSTDR) method has been introduced in this paper. SSTDR is a reflectometry method that has been commercially used for detecting aircraft wire faults. Unlike other fault detection schemes for a PV system, ground fau...2013-01-01
18 Khan, Faisal HabibReliability analysis and performance degradation of a boost converterIn general, power converters are operated in closed-loop systems, and any characteristic variations in one component will simultaneously alter the operating point of other components, resulting in a shift in overall reliability profile. This interdependence makes the reliability of a converter a com...2014-01-01
19 Tasdizen, TolgaSerial section registration of axonal confocal microscopy datasets for long-range neural circuit reconstructionIn the context of long-range digital neural circuit reconstruction, this paper investigates an approach for registering axons across histological serial sections. Tracing distinctly labeled axons over large distances allows neuroscientists to study very explicit relationships between the brain's com...2012-01-01
20 Stringfellow, Gerald B.Simulation of self-assembled compositional core-shell structures in In xGa 1-xN nanowiresWe report the simulation of compositional core-shell structure formation in epitaxial InGaN nanowires (NWs) and its dependence on kinetic growth mode and epitaxial relation to substrate, based on atomistic-strain-model Monte Carlo simulations. On a lattice mismatched substrate, the layer-by-layer gr...2012-01-01
21 Myers, Chris J.Utilizing stochastic model checking to analyze genetic circuitsWhen designing and analyzing genetic circuits, researchers are often interested in the probability of the system reaching a given state within a certain amount of time. Usually, this involves simulating the system to produce some time series data and analyzing this data to discern the state probabil...2012-01-01
22 Khan, Faisal HabibOutput impedance modeling of a multilevel modular switched-capacitor converter to achieve continuously variable conversion ratioThe multilevel modular capacitor clamped dc-to-dc converter (MMCCC) topology is completely modular and belongs to two-phase switched capacitor converter group. The conversion ratio of an ideal MMCCC converter in step-up mode is an integer and depends on the number of modules used. For a k-module MMC...2012-01-01
23 Khan, Faisal HabibQuantifying device degradation in live power converters using SSTDR assisted impedance MatrixA noninterfering measurement technique designed around spread spectrum time domain reflectometry (SSTDR) has been proposed in this paper to identify the level of aging associated with power semiconductor switches inside a live converter circuit. Power MOSFETs are one of the most age-sensitive compon...2014-01-01
24 Myers, Chris J.Using decision diagrams to compactly represent the state space for explicit model checkingThe enormous number of states reachable during explicit model checking is the main bottleneck for scalability. This paper presents approaches of using decision diagrams to represent very large state space compactly and efficiently. This is possible for asynchronous systems as two system states conne...2012-01-01
25 Khan, Faisal HabibUse of spread spectrum time domain reflectometry to estimate state of health of power convertersA new online measurement and analysis method has been presented in this paper to identify the state of health of power converter circuits. Using spread spectrum time domain reflectometry (SSTDR), impedance in the various current paths inside the converter as well as any fault can be identified witho...2012-01-01
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