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Biomedical Topical Meeting, BIO 2006

作者： Zysk, Adam M. Boppart, Stephen A. Department of Electrical and Computer Engineering Beckman Institute for Advanced Science and Technology 405 North Mathews Avenue Urbana IL 61801 United States Department of Bioengineering College of Medicine University of Illinois at Urbana-Champaign 405 North Mathews Avenue Urbana IL 61801 United States

ISBN: (纸本)1557528071

Tomographic coherent imaging of mammary lesions has been demonstrated as an effective means by which to identify boundaries between healthy and diseased tissue. While these results are encouraging, recent efforts toward the use of optical coherence technology (OCT) in surgical breast procedures may be hampered by a lack of automated assessment tools for use by clinicians. We will present k-space analysis techniques for the computational identification of human breast carcinomas in optical coherence tomography images. © 2006 Optical Society of America.

关键词： Optical tomography

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Cellular sorting with femtoliter fluid displacement for integrated flow cytometry systems

Cellular sorting with femtoliter fluid displacement for inte...

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Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser science Conference, CLEO/QELS 2006

作者： Justis, Nicole B. Lien, Victor Chen, Randy Lo, Yu-Hwa Department of Materials Science and Engineering University of California - c Engineering Building 2 9500 Gilman Drive San Diego CA 92093-0418 United States Department of Electrical and Computer Engineering University of California - San Diego San Diego CA United States Department of Bioengineering University of California - San Diego San Diego CA United States

An acousto-optical microfluidic flow cytometer featuring femtoliter fluid-displacement was demonstrated with cellular sorting efficiencies at upwards of 99% at 5kHz frequency actuation. Simulation and validation was p... 详细信息

ISBN: (纸本)1557528136

关键词： Reynolds number

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Increasing the Performance of Cortically-Controlled Prostheses

Increasing the Performance of Cortically-Controlled Prosthes...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Krishna V. Shenoy Teresa H. Santhanam Stephen I. Ryu Afsheen Afshar Byron M. Yu Vikash Gilja Michael D. Linderman Rachel S. Kalmar John P. Cunningham Caleb T. Kemere Aaron P. Batista Mark M. Churchland Teresa H. Meng Department of Electrical Engineering Neurosciences Program Department of Neurosurgery Medical Scientist Training Program Department of Electrical Engineering Da-Yeh University Taiwan Department of Computer Science Stanford CA USA

Neural prostheses have received considerable attention due to their potential to dramatically improve the quality of life of severely disabled patients. Cortically-controlled prostheses are able to translate neural activity from cerebral cortex into control signals for guiding computer cursors or prosthetic limbs. Non-invasive and invasive electrode techniques can be used to measure neural activity, with the latter promising considerably higher levels of performance and therefore functionality to patients. We review here some of our recent experimental and computational work aimed at establishing a principled design methodology to increase electrodebased cortical prosthesis performance to near theoretical limits. Studies discussed include translating unprecedentedly brief periods of “plan” activity into high information rate (6.5 bits/s) control signals, improving decode algorithms and optimizing visual target locations for further performance increases, and recording from chronically implanted arrays in freely behaving monkeys to characterize neuron stability. Taken together, these results should substantially increase the clinical viability of cortical prostheses.

关键词： Prosthetics Neural prosthesis Neurons Electrodes USA Councils Central nervous system Design methodology Communication system control Decoding Medical treatment

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MEMS and microsystems courses with national and international dissemination

MEMS and microsystems courses with national and internationa...

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113th Annual ASEE Conference and Exposition, 2006

作者： McAfee, Leo Najafi, Khalil Gianchandani, Yogesh Wise, Kensall D. Maharbiz, Michel M. Aslam, Dean Bergstrom, Paul Friedrich, Craig University of Michigan United States IEEE ASEE Department of Electrical Engineering and Computer Science University of Michigan United States MI United States WIMS ERC United States EECS Department College of Engineering Interdisciplinary Professional Degree Program in Integrated Microsystems Department of Electrical Engin-eering and Computer Science Department of Manufacturing Technology Department of Biomedical Engineering AIMBE United States United States National Academy of Engineering United States Electrical Engineering and Computer Science Chemical and Biomedical Engineering Departments University of Michigan Ann Arbor United States Wireless Integrated Microsystems NSF ERC National Nanotechnology Initiative Network Michigan State University United States Engineering Research Center for Wireless Integrated MicroSystems United States Michigan Technological University United States Michigan Technological University Houghton MI United States Microfabrication Facility Michigan Tech. United States

The Wireless Integrated MicroSystems (WIMS) engineering Research Center (ERC) has developed a broad comprehensive MEMS and microsystem curriculum suitable for upper-level undergraduate students, graduate students, and industry professionals. Five core courses were in the initial curriculum design. The design had flexibility that invited development of other core courses, as well as related technical electives and breadth electives. The core courses provide instruction in MEMS, Microsystems, major design and laboratory measurements, and societal impact. The course enrollments have been strong. A master of engineering in integrated microsystems degree program was developed so that industry professionals would have a focused set of coursework, while providing flexibility that would permit custom tailoring of the total course package to serve specific needs. Distance education dissemination of the courses as whole courses, or as discrete portions of course materials, was intended to be available;that goal has been realized. The core courses originate at the University of Michigan (UM), and have been distributed to Michigan State University (MSU), Michigan Technological University (MTU), Howard University (HU), University of Puerto Rico - Mayaguez (UPRM), and Western Michigan University (WMU). Rochester Institute of Technology (RIT) has used materials from the UM core courses in its offerings. Other institutions that have used the course web-streaming video and course materials are University of Lille, Darmstadt University, and Middle East Technical University. © American Society for engineering Education, 2006.

关键词： Curricula

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Three-dimensional visualization of lymph node morphology using OCT

Three-dimensional visualization of lymph node morphology usi...

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Biomedical Topical Meeting, BIO 2006

作者： Nguyen, Freddy T. Luo, Wei Zysk, Adam M. Ralston, Tyler S. Chaney, Eric J. Marks, Daniel L. Oldenburg, Amy L. Brockenbrough, John Boppart, Stephen A. Department of Chemistry Medical Scholars Program College of Medicine Beckman Institute for Advanced Science and Technology United States Department of Electrical and Computer Engineering Beckman Institute for Advanced Science and Technology United States Carle Foundation Hospital College of Medicine United States 405 North Mathews Avenue Urbana Illinois 61801 United States

We report the first demonstration of OCT for the three-dimensional visualization of lymph node morphology and microarchitecture from human and carcinogen-induced rat mammary tumor specimens. © 2006 Optical Societ... 详细信息

ISBN: (纸本)1557528071

关键词： Body fluids

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Vertically aligned carbon nanotube field emission devices fabricated by furnace thermal chemical vapor deposition at atmospheric pressure

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Journal of Vacuum science and Technology B: Microelectronics and Nanometer Structures 2006年第3期24卷 1190-1196页

作者： Wei, S. Kang, W.P. Davidson, J.L. Choi, B.K. Huang, J.H. Interdisciplinary Program in Materials Science Vanderbilt University Nashville TN 37235 Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN 37235 Department of Materials Science and Engineering National Tsing Hua University Hsinchu 300 Taiwan

Multiwalled carbon nanotubes (CNTs) grown by thermal chemical vapor deposition (CVD) in a tube furnace at atmospheric pressure are reported. The CNTs were synthesized at 750 °C using C2 H2 as the carbon source and a mixture of Ar H2 (80 vol %:20 vol %) as a carrier gas, with N H3 serving as a processing reagent. The catalytic properties of nickel (Ni) particles are strongly affected by the CVD process parameters and this effect is reflected in the morphologies and field emission behaviors of the as-grown CNTs. The flow rate ratio of N H3 to C2 H2 is found to be critical to the formation of vertically aligned CNTs, which demonstrated better field emission characteristics than the randomly oriented nanotubes. The successful synthesis of vertically aligned CNTs at atmospheric pressure in a tube furnace is beneficial for large area mass production such as flat panel field emission displays at lower cost. © 2006 American Vacuum Society.

关键词： Field emission displays

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Circadian phase entrainment via nonlinear model predictive control

Circadian phase entrainment via nonlinear model predictive c...

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2006 AIChE Annual Meeting

作者： Bagheri, Neda Stelling, Jorg Doyle, III, Francis J. Department of Electrical and Computer Engineering University of California Santa Barbara Santa Barbara CA 93106-5080 United States Department of Chemical Engineering University of California Santa Barbara Santa Barbara CA 93106-5080 United States Biomolecular Science and Engineering Program University of California Santa Barbara Santa Barbara CA 93106-5080 United States Institute of Computational Science ETH Zurich 8092 Zurich Switzerland

No abstract available

ISBN: (纸本)081691012X

No abstract available

关键词： Biological oscillators Entrainment Model predictive control Phase resetting

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Increasing the performance of cortically-controlled prostheses

Increasing the performance of cortically-controlled prosthes...

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28th Annual International Conference of the IEEE engineering in Medicine and Biology Society, EMBS'06

作者： Shenoy, Krishna V. Santhanam, Gopal Ryu, Stephen I. Afshar, Afsheen Yu, Byron M. Gilja, Vikash Linderman, Michael D. Kalmar, Rachel S. Cunningham, John P. Kemere, Caleb T. Batista, Aaron P. Churchland, Mark M. Meng, Teresa H. Department of Electrical Engineering Stanford University Stanford CA 94305 United States Neurosciences Program Stanford University Stanford CA 94305 United States Department of Neurosurgery Stanford University Stanford CA 94305 United States Medical Scientist Training Program Stanford University Stanford CA 94305 United States Department of Computer Science Stanford University Stanford CA 94305 United States

ISBN: (纸本)1424400325

Neural prostheses have received considerable attention due to their potential to dramatically improve the quality of life of severely disabled patients. Cortically-controlled prostheses are able to translate neural activity from cerebral cortex into control signals for guiding computer cursors or prosthetic limbs. Non-invasive and invasive electrode techniques can be used to measure neural activity, with the latter promising considerably higher levels of performance and therefore functionality to patients. We review here some of our recent experimental and computational work aimed at establishing a principled design methodology to increase electrodebased cortical prosthesis performance to near theoretical limits. Studies discussed include translating unprecedentedly brief periods of "plan" activity into high information rate (6.5 bits/s) control signals, improving decode algorithms and optimizing visual target locations for further performance increases, and recording from chronically implanted arrays in freely behaving monkeys to characterize neuron stability. Taken together, these results should substantially increase the clinical viability of cortical prostheses. © 2006 IEEE.

关键词： Prosthetics

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A neural model for sonar-based navigation in obstacle fields

A neural model for sonar-based navigation in obstacle fields

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： T.K. Horiuchi Institute for Systems Research & The Neuroscience and Cognitive Science Program Electrical and Computer Engineering Department University of Maryland College Park MD USA

The rapid control of sonar-guided vehicles through obstacle fields has been a goal of robotics for decades. How sensory data is represented strongly affects how obstacles and goal information can be combined to select a direction of travel. While typical approaches combine attractive and repulsive effects to directly determine steering, we are investigating an algorithm that evaluates multiple directions simultaneously followed by a winner-take-all (WTA) function which then guides steering. In this paper we describe a neuromorphic VLSI implementation of this algorithm using the inherent echo delay to create a range-dependent gain in a 'race-to-first-spike' neural WTA circuit. The chip was fabricated in a commercially-available 0.5 mum CMOS process and in this paper we present preliminary test results

关键词： Sonar navigation Robot sensing systems Neurons Automotive engineering Neuroscience Cognitive science Educational institutions Control systems Vehicles Cognitive robotics

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Total dose radiation response of nitrided and non-nitrided SiO 2/4H-SiC MOS capacitors

Total dose radiation response of nitrided and non-nitrided S...

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作者： Dixit, Sriram K. Dhar, Sarit Rozen, John Wang, Sanwu Schrimpf, Ronald D. Fleetwood, Daniel M. Pantelides, Sokrates T. Williams, John R. Feldman, Leonard C. IEEE Interdisciplinary Materials Science Program Vanderbilt University Nashville TN 37235 United States Department of Physics and Astronomy Vanderbilt University Nashville TN 37235 United States Department of Physics and Engineering Physics University of Tulsa Tulsa OK 74104 United States Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN 37235 United States Physics Department Auburn University Auburn AL 36849 United States

The total dose radiation response of nitrided and nonnitrided n-type 4H-SiC is reported for metal oxide semiconductor capacitors exposed to 10-keV X-rays under positive bias. The radiation response is affected strongly by differences in the SiC band gap and interface/near interface SiO2 trap density from typical Si MOS devices. Significantly higher net trapped positive charge densities were observed in nitrided n-SiC MOS capacitors compared to the non-nitrided samples. The mechanisms contributing to the differences in the charge trapping in these devices are discussed. Differences in the interfacial layer between SiO2/Si and SiO2/SiC are responsible for the observed dissimilarities in charge trapping behavior. © 2006 IEEE.

关键词： MOS capacitors

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