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Your search keyword '"Davidson, Jim L."' showing total 21 results
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21 results on '"Davidson, Jim L."'

5. Current conduction mechanism and gas adsorption effects on device parameters of the Pt/SnO(sub x)/diamond gas sensor

Author

Gurbuz, Yasar, Kang, Weng Poo, Davidson, Jim L., and Kerns, David V., Jr.

Subjects
Sensors -- Research, Diamonds -- Research, Microelectronics -- Research, Business, Electronics, Electronics and electrical industries
Abstract

A study was conducted on the sensing performance for oxidizing and reducing gases, current conduction mechanism and gas adsorption effects on device parameters of a Pt/SnO(sub x)/diamond gas sensor. The sensor was sensitive and exhibited high, repeatable and reproducible reaction.The sensor responded in seconds to small concentrations of O2, CO and H2 gases. The detection mechanism of the sensor was ascribed to the change in occupancy ratio of the oxygen vacancies of the adsorptive oxide layer upon oxygen exposure.

Published
1999

7. Dose-Rate Effects on the Total-Ionizing-Dose Response of Piezoresistive Micromachined Cantilevers

Author

Arutt, Charles N., primary, Liao, Wenjun, additional, Gong, Huiqi, additional, Shuvra, Pranoy Deb, additional, Lin, Ji-Tzuoh, additional, Alles, Michael L., additional, Alphenaar, Bruce W., additional, Davidson, Jim L., additional, Walsh, Kevin M., additional, McNamara, Shamus, additional, Zhang, En Xia, additional, Sternberg, Andrew L., additional, Fleetwood, Daniel M., additional, Reed, Robert A., additional, and Schrimpf, Ronald D., additional

Published
2018
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8. Proton-Induced Displacement Damage and Total-Ionizing-Dose Effects on Silicon-Based MEMS Resonators

Author

Gong, Huiqi, primary, Liao, Wenjun, additional, Zhang, En Xia, additional, Sternberg, Andrew L., additional, McCurdy, Michael W., additional, Davidson, Jim L., additional, Reed, Robert A., additional, Fleetwood, Daniel M., additional, Schrimpf, Ronald D., additional, Shuvra, Pranoy Deb, additional, Lin, Ji-Tzuoh, additional, McNamara, Shamus, additional, Walsh, Kevin M., additional, Alphenaar, Bruce W., additional, and Alles, Michael L., additional

Published
2018
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10. The study of radiation effects in emerging micro and nano electro mechanical systems (M and NEMs)

Author

Massachusetts Institute of Technology. Department of Materials Science and Engineering, Hu, Juejun, Du, Qingyang, Arutt, Charles N, Alles, Michael L, Liao, Wenjun, Gong, Huiqi, Davidson, Jim L, Schrimpf, Ronald D, Reed, Robert A, Weller, Robert A, Bolotin, Kirill, Nicholl, Ryan, Pham, Thang Toan, Zettl, Alex, Li, Mo, Alphenaar, Bruce W, Lin, Ji-Tzuoh, Shurva, Pranoy Deb, McNamara, Shamus, Walsh, Kevin M, Feng, Philip X-L, Hutin, Louis, Ernst, Thomas, Homeijer, Brian D, Polcawich, Ronald G, Proie, Robert M, Jones, Jacob L, Glaser, Evan R, Cress, Cory D, Bassiri-Gharb, Nazanin, Massachusetts Institute of Technology. Department of Materials Science and Engineering, Hu, Juejun, Du, Qingyang, Arutt, Charles N, Alles, Michael L, Liao, Wenjun, Gong, Huiqi, Davidson, Jim L, Schrimpf, Ronald D, Reed, Robert A, Weller, Robert A, Bolotin, Kirill, Nicholl, Ryan, Pham, Thang Toan, Zettl, Alex, Li, Mo, Alphenaar, Bruce W, Lin, Ji-Tzuoh, Shurva, Pranoy Deb, McNamara, Shamus, Walsh, Kevin M, Feng, Philip X-L, Hutin, Louis, Ernst, Thomas, Homeijer, Brian D, Polcawich, Ronald G, Proie, Robert M, Jones, Jacob L, Glaser, Evan R, Cress, Cory D, and Bassiri-Gharb, Nazanin

Abstract

The potential of micro and nano electromechanical systems (M and NEMS) has expanded due to advances in materials and fabrication processes. A wide variety of materials are now being pursued and deployed for M and NEMS including silicon carbide (SiC), III–V materials, thin-film piezoelectric and ferroelectric, electro-optical and 2D atomic crystals such as graphene, hexagonal boron nitride (h-BN), and molybdenum disulfide (MoS₂). The miniaturization, functionality and low-power operation offered by these types of devices are attractive for many application areas including physical sciences, medical, space and military uses, where exposure to radiation is a reliability consideration. Understanding the impact of radiation on these materials and devices is necessary for applications in radiation environments., Defense Threat Reduction Agency (DTRA) (Grant HDTRA1-15-1-0027), Defense Threat Reduction Agency (DTRA) (Grant HDTRA1-15-1-0035), Defense Threat Reduction Agency (DTRA) (Grant HDTRA1-15-1-0036), Defense Threat Reduction Agency (DTRA) (Grant HDTRA1-15-1-0039), Defense Threat Reduction Agency (DTRA) (Grant HDTRA1-15-1-0060)

Published
2017

11. Total-Ionizing-Dose Effects in Piezoresistive Micromachined Cantilevers

Author

Gong, Huiqi, primary, Liao, Wenjun, additional, Zhang, En Xia, additional, Sternberg, Andrew L., additional, McCurdy, Michael W., additional, Davidson, Jim L., additional, Reed, Robert A., additional, Fleetwood, Daniel M., additional, Schrimpf, Ronald D., additional, Shuvra, Pranoy Deb, additional, Lin, Ji-Tzuoh, additional, McNamara, Shamus, additional, Walsh, Kevin M., additional, Alphenaar, Bruce W., additional, and Alles, Michael L., additional

Published
2017
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12. The study of radiation effects in emerging micro and nano electro mechanical systems (M and NEMs)

Author

Arutt, Charles N, primary, Alles, Michael L, additional, Liao, Wenjun, additional, Gong, Huiqi, additional, Davidson, Jim L, additional, Schrimpf, Ronald D, additional, Reed, Robert A, additional, Weller, Robert A, additional, Bolotin, Kirill, additional, Nicholl, Ryan, additional, Pham, Thang Toan, additional, Zettl, Alex, additional, Qingyang, Du, additional, Hu, Juejun, additional, Li, Mo, additional, Alphenaar, Bruce W, additional, Lin, Ji-Tzuoh, additional, Shurva, Pranoy Deb, additional, McNamara, Shamus, additional, Walsh, Kevin M, additional, Feng, Philip X-L, additional, Hutin, Louis, additional, Ernst, Thomas, additional, Homeijer, Brian D, additional, Polcawich, Ronald G, additional, Proie, Robert M, additional, Jones, Jacob L, additional, Glaser, Evan R, additional, Cress, Cory D, additional, and Bassiri-Gharb, Nazanin, additional

Published
2016
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20. High Temporal Resolution Bio-Sensing Using Nitrogen-Incorporated Nanodiamond Ultra-Microelectrode Array by Fast Scan Cyclic Voltammetry

Author

Raina, Supil, Poo, Weng, Davidson, Jim L., and Hua, Jin

Abstract

Microelectrodes have several benefits over macroelectrodes by virtue of their size. Their advantages include lower capacitance and uncompensated resistance loss, enhanced temporal and spatial resolution, usability in highly resistive media, increased signal to noise ratio. An array of microelectrodes can deliver these benefits along with signal amplification. Neurotransmitters, such as dopamine, undergo rapid fluctuations in concentrations occurring at a sub-second time scale. Real-time monitoring and measurement of these concentration changes, in-vivo or in-vitro, requires the use of ultra-microelectrode arrays (UMEAs). A nitrogen incorporated nanodiamond UMEA was fabricated using silicon microfabrication technology and microwave PECVD process. The array of 2500 UMEs, projects above the SiO2 insulating matrix, thus providing a 3-dimensional surface. Fast scan cyclic voltammetry at 300V/s was used to examine the temporal response and sensitivity for dopamine detection. A large negative holding potential was employed to promote DA pre-concentration in between the voltage scans.

Published
2013

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