Filters: Department: "Electrical & Computer Engineering" Collection: "ir_uspace" Year End: 2012 Year Start: 2012
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
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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 | |
| 2 |
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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 | |
| 3 |
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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 | |
| 4 |
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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 | |
| 5 |
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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 | |
| 6 |
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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 | |
| 7 |
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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 | |
| 8 |
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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 | |
| 9 |
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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 | |
| 10 |
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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 | |
| 11 |
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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 | |
| 12 |
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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 | |
| 13 |
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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 | |
| 14 |
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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 | |
| 15 |
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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 | |
| 16 |
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Rieth, Loren W | Excimer-laser deinsulation of Parylene-C coated Utah electrode array tips | Utah 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 | |
| 17 |
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Mastrangelo, Carlos H. | Fabrication of localized plasma gold-tip nanoprobes with integrated microchannels for direct-write nanomanufacturing | We present the microfabrication and characterization of an AFM-tip like device with integrated gas delivery microchannel for the generation of localized microplasmas. The device plasma is generated within a submicron region around its tip for direct-write micro and nanofabrication. The device is fab... | 2012-01-01 | |
| 18 |
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Khan, Faisal Habib | Fabrication processes and experimental validation of a planar PV power system with monolithically embedded power converters | This 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 | |
| 19 |
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Myers, Chris J. | Formal verification of genetic circuits | Researchers 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 | |
| 20 |
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Khan, Faisal Habib | Interconnection and optimization issues of multijunction solar cells - A new mitigation approach using switching power converters | A multijunction solar cell can extract higher solar energy compared to a single junction solar cell using the spectrum splitting technique. Extensive research on efficiency enhancement of the solar cells to achieve near theoretical limit is in place. However, there are limited research activities to... | 2012-01-01 | |
| 21 |
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Mastrangelo, Carlos H. | MEMS-based hemispherical resonator gyroscopes | This 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 | |
| 22 |
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Blair, Steven | Optical antenna design for fluorescence enhancement in the ultraviolet | Through rational design, we compare the performance of three plasmonic antenna structures for UV fluorescence enhancement. Among the antenna performance metrics considered are the local increase in excitation intensity and the increase in quantum efficiency, the product of which represents the net f... | 2012-01-01 | |
| 23 |
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Khan, Faisal Habib | Output impedance modeling of a multilevel modular switched-capacitor converter to achieve continuously variable conversion ratio | The 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 | |
| 24 |
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Rieth, Loren W | Plasma-assisted atomic layer deposition of Al2O3 and parylene C bi-layer encapsulation for chronic implantable electronics | Encapsulation of biomedical implants with complex three dimensional geometries is one of the greatest challenges achieving long-term functionality and stability. This report presents an encapsulation scheme that combines Al2O3 by atomic layer deposition with parylene C for implantable electronic sys... | 2012-01-01 | |
| 25 |
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Blair, Steven | Plasmonic coupling effect in Ag nanocap-nanohole pairs for surface-enhanced Raman scattering | A plasmonic coupling structure composed of Ag nanocap-nanohole pairs was fabricated through a novel and facile method. Both surface-enhanced Raman scattering (SERS) measurements and numerical simulations show that the cap-hole system produces much larger electric field enhancement and SERS signal th... | 2012-01-01 |