Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Adam C. Scofield"'
Autor:
E. C. Dillingham, Adam C. Scofield, Ani Khachatrian, Dale McMorrow, S. D. LaLumondiere, C. Affouda, S. P. Buchner, Andrew D. Koehler, Dale Brewe, J. P. Bonsall
Publikováno v:
IEEE Transactions on Nuclear Science. 66:1682-1687
A focused pulsed X-ray beam is used to determine how the redistribution of the electric field by the gate-connected field plate affects single-event transient (SET) susceptibility of an AlGaN/GaN Schottky-gate HEMT on SiC. SETs generated by scanning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4a098fe1c3d9cf3f2a7e34f0e41c66a
https://doi.org/10.1109/tns.2019.2910493
https://doi.org/10.1109/tns.2019.2910493
Autor:
Ronald D. Schrimpf, David Cardoza, Erik C. Dillingham, Nathan P. Wells, Stephen LaLumondiere, Adam C. Scofield, Petras Karuza, J. P. Bonsall, William T. Lotshaw, Andrew L. Sternberg, Dale Brewe, Steven C. Moss
Publikováno v:
IEEE Transactions on Nuclear Science. 65:478-485
We demonstrate the utility of focused, pulsed X-rays for investigating localized total ionizing dose effects in bipolar analog integrated circuits. Using the LM139 comparator as a test vehicle, we show how the technique can be used to identify the so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d227f645f211ba06470243918d39dd35
https://doi.org/10.1109/tns.2017.2780827
https://doi.org/10.1109/tns.2017.2780827
Autor:
Alan C. Farrell, Adam C. Scofield, Zixuan Rong, Diana L. Huffaker, Michael A. Haddad, Dingkun Ren, Ramesh B. Laghumavarapu, Baolai Liang
Publikováno v:
Nanoscale. 10:7792-7802
Time-resolved photoluminescence (TRPL) has been implemented experimentally to measure the carrier lifetime of semiconductors for decades. For the characterization of nanowires, the rich information embedded in TRPL curves has not been fully interpret
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4197a0c4a9ae4a6790dcc124568532e0
https://doi.org/10.1039/c8nr01908h
https://doi.org/10.1039/c8nr01908h
Publikováno v:
2019 IEEE Photonics Conference (IPC).
We demonstrate recovery of Mackey-Glass waveforms and multi-frequency sinusoids using speckle-based reservoir computer. Neurons and RF waveforms drive a spatial light modulator imaged onto a multimode fiber. Fiber output is imaged onto a camera, digi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::144a76eb841dced2959a5627cd4be2b4
https://doi.org/10.1109/ipcon.2019.8908446
https://doi.org/10.1109/ipcon.2019.8908446
Autor:
Leif A. Johansson, Daniele M. Monahan, Thomas Justin Shaw, S. Estella, George C. Valley, Adam C. Scofield, Uttam Paudel, George A. Sefler
Publikováno v:
2019 IEEE Photonics Conference (IPC).
Detection of wideband RF signals has applications in sensing and communications. When the signals of interest are sparse, compressive sensing (CS) provides a sub-Nyquist sampling strategy with potential size, weight, and power savings. The critical e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fba21978d102b034c63776f7a11fc6d2
https://doi.org/10.1109/ipcon.2019.8908273
https://doi.org/10.1109/ipcon.2019.8908273
Publikováno v:
Optical Data Science II.
Random projections are used in applications such as compressive sensing, speckle spectroscopy, and recurrent neural networks. Most prior work has used speckle in free-space systems. Here we report results using laser speckle in planar and cylindrical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d80a6dfe7ff826299ea9dcd0b386fcb
https://doi.org/10.1117/12.2509939
https://doi.org/10.1117/12.2509939
Publikováno v:
OFC
BPSK and QPSK RF signals are demodulated without carrier frequency knowledge. The demodulator employs compressive sensing recovery methods and uses speckle within a multimode fiber to perform the requisite random signal projections.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::828581cf162a4f85faa4a52dcc1f4a13
https://doi.org/10.1364/ofc.2019.th2a.38
https://doi.org/10.1364/ofc.2019.th2a.38
Publikováno v:
2018 IEEE Avionics and Vehicle Fiber-Optics and Photonics Conference (AVFOP).
We report the experimental demonstrations of compressive sensing RF receiver and spectrometer with photonic systems in which the measurement matrices are implemented using speckle in multimode waveguides. We calibrate by measuring a dictionary of sin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a74196b8470da0409acc48b83dfc4ea0
https://doi.org/10.1109/avfop.2018.8550466
https://doi.org/10.1109/avfop.2018.8550466
Autor:
Andrew Hudson, Bor-Chau Juang, Michael A. Slocum, William T. Lotshaw, Baolai Liang, Adam C. Scofield, Diana L. Huffaker, M. C. Debnath, Seth M. Hubbard
Publikováno v:
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC)
As part of a study on radiation effects in optoelectronic materials, we exposed a series of AIGaAs/GaAs double heterostructures grown by molecular beam epitaxy and metalorganic chemical vapor deposition to electron and proton radiation. The active re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::342cc184a44c627a4728f9e7e3258a4b
https://doi.org/10.1109/pvsc.2018.8547607
https://doi.org/10.1109/pvsc.2018.8547607
Autor:
Andrew Stapleton, Adam C. Scofield, Leif Johannson, George A. Sefler, Thomas Justin Shaw, George C. Valley
Publikováno v:
Optical Data Science: Trends Shaping the Future of Photonics.
We propose and simulate integrated optical devices for accelerating numerical linear algebra (NLA) calculations. Data is modulated on chirped optical pulses and these propagate through a multimode waveguide where speckle provides the random projectio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfde37f5a62a3745ddf8c91e43786466
https://doi.org/10.1117/12.2294574
https://doi.org/10.1117/12.2294574