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Creator | Title | Description | Subject | Date |
26 |
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Roundy, Shadrach J. | MEMS testing: transition from millions to billions to trillions | Sensors, specifically MEMSbased, have created multiple market tornados over the past 40 years. Most recently there has been a market explosion driven by the widespread adoption of MEMS sensing devices in mobile consumer applications. In the past 5 years the worldwide market has grown from roughly 10... | | 2012-01-01 |
27 |
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Gale, Bruce K. | New approaches to bridge nerve gaps: Development of a novel drug-delivering nerve conduit | Contemporary bridging techniques for repairing nerve gaps caused by trauma require autologous nerve grafts, which are difficult to harvest and handle and result in significant donor site deficit. Several nerve conduits with axon growth-enhancing potential have been proposed, developed and tested ove... | | 2012-01-01 |
28 |
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Gale, Bruce K. | Cyclical magnetic field flow fractionation | In this study, a new magnetic field flow fractionation (FFF) system was designed and modeled by using finite element simulations. Other than current magnetic FFF systems, which use static magnetic fields, our system uses cyclical magnetic fields. Results of the simulations show that our cyclical mag... | | 2012-01-01 |
29 |
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Adams, Daniel | Microbial production of methane and carbon dioxide from lignite, bituminous coal, and coal waste materials | The aim of this study was to examine microbial methane and CO2 production from bituminous coal waste, lignite, and bituminous coal materials. Bituminous coal and coal waste material were obtained from a Utah mine and lignite was obtained from a commercially available North Dakota sample. Microbial p... | | 2012-01-01 |
30 |
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Ecsedy, Kathryn Lyn; Harvey, Ian R. | The artistic applications of M.E.M.S.: gallery on a chip | Our research explored the crossroads between art and science to create tiny devices known as MEMS (Micro Electrical Mechanical Systems). These artistic devices are powered by micro charge-pumped actuation of electrons in a scanning electron microscope, utilizing a phenomenon once considered an irri... | Artistic applications; MEMS; Micro Electrical Mechanical Systems; Kinetic micro sculpture; Micro charge pump actuation; Trapeze Interactive Poster | 2010-03-15 |
31 |
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Gale, Bruce K. | Optimization and characterization of a microscale thermal field-flow fractionation system | A thorough investigation of the design considerations for microscale thermal field-flow fractionation and characterization of a 25 μm thin microscale thermal field-flow fractionation system is reported. A 4-50 times volume reduction from mesoscale and macroscale systems warrants customized design a... | | 2010-01-01 |
32 |
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Horch, Kenneth W.; Lawrence, Steve M.; Dhillon, Gurpreet S. | Acute peripheral nerve recording characteristics of polymer-based longitudinal intrafascicular electrodes | We examined the recording characteristics of two different types of polymer-based longitudinal intrafascicular electrodes (LIFEs) in peripheral nerve: single-stranded (s-polyLIFEs) and multistranded (m-polyLIFEs). Recordings were also made from Pt-Ir wire-based electrodes (PtIrLIFEs) as a control. T... | Sciatic Nerve; Intrafascicular Electrodes, Peripheral Nerve Recording | 2004 |
33 |
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Guilkey, James Edward | Improved velocity projection for the Material Point Method | The standard velocity projection scheme for the Material Point Method (MPM) and a typical form of the GIMP Method are examined. It is demonstrated that the fidelity of information transfer from a particle representation to the computational grid is strongly dependent on particle density and locati... | Material Point Method; GIMP Method; Meshless methods; Velocity projection; Solid mechanics | 2007 |
34 |
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Normann, Richard A.; Johansson,Torbjorn; Abbasi, Masoud; Huber, Robert J. | Three-dimensional architecture for a parallel processing photosensing array | A three-dimensional architecture for a photosensing array has been developed. This silicon based architecture consists of a 10 x 10 array of photosensors with 80 microns diameter, through chip interconnects to the back side of a 500 microns thick silicon wafer. Each photosensor consists of a 300 x 3... | Retina; Optics; Silicon; Photosensing | 1992 |
35 |
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Horch, Kenneth W.; Dhillon, Gurpreet S. | Direct neural sensory feedback and control of a prosthetic arm | Evidence indicates that user acceptance of modern artificial limbs by amputees would be significantly enhanced by a system that provides appropriate, graded, distally referred sensations of touch and joint movement, and that the functionality of limb prostheses would be improved by a more natural co... | Peripheral Nerve Implant; Prosthetic Limb Control; Sensory Feedback | 2005-12 |
36 |
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Ameel, Timothy A; Gale, Bruce K.; Harvey, Ian R. | A three-semester interdisciplinary educational program in microsystems engineering | Motivated by an NSF IGERT grant in the general area of microfluidics, a sequence of three interdisciplinary technical courses has been developed in the emerging area of microsystems engineering. Designed to be taken in series, these courses take students, both graduate and upper-level undergraduates... | | 2004 |
37 |
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Adams, Daniel | Micromechanical modeling of high energy composites | High-energy polymer-binded explosives (PBXs) are composed of high-energy crystaline particles and a rubbery binder. The volume fraction of particles is approximately 92 percent. The high-energy particles have a Young's modulus that is three orders of magnitude higher than that of the binder. Eff... | | 2000 |
38 |
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Ameel, Timothy A;Harvey, Ian R.; Miller, Mark S.; Blair, Steven; Gale, Bruce K.; Ring, Terry Arthur | Building academic, research, and commercialization programs in micro and nano science and engineering at the University of Utah | Abstract-This paper presents a case-study of some University /Government / Industry interactions at the University of Utah that build research and academic programs and create opportunities fur economic growth in the areas of micro and nanu science and engineering. | | 2003 |
39 |
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Brown, Don R. | The design and implementation of partnet | PartNet is a federated database for providing interactive online access to mechanical parts catalogs. The data contained in the vendor's product database is exported to the federated database using a networkbased distributed database protocol. A Single coherent view of these vendor databases is pro... | | 1995 |
40 |
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Normann, Richard A.; Abbasi, Masoud; Johansson,Torbjorn | Silicon carbide enhanced thermomigration | The widespread acceptance of thermomigration technology to produce through-chip interconnects has been impaired by (i) a random walk of the Si-Al liquid eutectic inclusion as it traverses the wafer, and (ii) a ?surface barrier? which allows thermomigration of only relatively large inclusions. In ... | Silicon Dioxide; Thermometers; Transducers; Thermomigration Technology; Infrared Lamps | 1992 |
41 |
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Ameel, Timothy A | Microchannel fluid behavior using micropolar fluid theory | In this paper, we describe microchannel fluid behavior using a numerical model based on micropolar fluid theory and experimentally verify the model using micromachined channels. The micropolar fluid theory augments the laws of classical continuum mechanics by incorporating the effects of fluid ... | | 1998 |
42 |
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Guilkey, James Edward | Improved contact algorithm for the material point method and application to stress propagation in granular material | Contact between deformable bodies is a difficult problem in the analysis of engineering systems. A new approach to contact has been implemented using the Material Point Method for solid mechanics, Bardenhagen, Brackbill, and Sulsky (2000a). Here two improvements to the algorithm are described. The f... | Contact algorithm; Material point method; Wave propagation; Granular material; Solid mechanics | 2001 |
43 |
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Gale, Bruce K. | Characterization of a microscale thermal-electrical field-flow fractionation system | A microscale thermal-electrical field-flow fractionation (ThElFFF) channel is reported for the first time and preliminary characterization results show high retention at certain operating conditions including relatively high flow rates when compared to standard microscale electrical or thermal field... | | 2010 |
44 |
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Guilkey, James Edward; Berzins, Martin | Examination and analysis of implementation choices within the material point method (MPM) | The Material Point Method (MPM) has shown itself to be a powerful tool in the simulation of large deformation problems, especially those involving complex geometries and contact where typical finite element type methods frequently fail. While these large complex problems lead to some impressive si... | GIMP; Meshfree methods; Meshless methods; Particle methods; Smoothed particle hydrodynamics; Quadrature | 2008 |
45 |
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Normann, Richard A.; Horch, Kenneth W.; Cha, Kichul | Mobility performance with a pixelized vision system | A visual prosthesis, based on electrical stimulation of the visual cortex, has been suggested as a means for partially restoring functional vision in the blind. The prosthesis would create a pixelized visual sense consisting of punctate spots of light (phosphenes). The present study investigated the... | Visual Prosthesis; Mobility; Phosphene Simulator | 1992 |