Zobrazeno 1 - 10
of 184
pro vyhledávání: '"Mark E. Twigg"'
Autor:
Evan R. Glaser, Zachary R. Robinson, Laura B. Ruppalt, Sharka M. Prokes, Alexander C. Kozen, Mark E. Twigg, Hans Cho, Thomas J. Larrabee
Publikováno v:
ACS Applied Materials & Interfaces. 12:16639-16647
Niobium oxide (NbOx) materials of various compositions are of interest for neuromorphic systems that rely on memristive device behavior. In this study, we vary the composition of NbOx thin films deposited via atomic layer deposition (ALD) by incorpor
Autor:
Charles R. Eddy, Nabil Bassim, Mark E. Twigg, Ron T. Holm, D. K. Gaskill, R.L. Henry, Michael A. Mastro
Distributed Bragg reflectors (DBRs) composed of an AlN/AlGaN superlattice were grown of Si (111) substrates. The first high-reflectance III-nitride DBR on Si was achieved by growing the DBR directly on the Si substrate to enhance the overall reflecta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ac64a319fb95d027e00c72a51d459d6
http://arxiv.org/abs/2009.01635
http://arxiv.org/abs/2009.01635
Autor:
Michael A. Mastro, Charles R. Eddy, Nabil Bassim, Mark E. Twigg, A. Rosenberg, Ron T. Holm, R.L. Henry
Distributed Bragg reflectors (DBRs) composed of an AlN/GaN superlattice were demonstrated for the first time on Si (100) substrates. Single-crystal wurtzite superlattice structures were achieved on this cubic substrate by employing offcut Si (100) wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb60bc53830accf62a439c16bb4eac60
Autor:
Michael K. Yakes, Igor Vurgaftman, María Victoria González, Stephanie Tomasulo, Jerry R. Meyer, Robert J. Walters, Matthew P. Lumb, Mark E. Twigg
Publikováno v:
2019 IEEE 46th Photovoltaic Specialists Conference (PVSC).
We present molecular beam epitaxy growth of novel InAlAsSb lattice-matched to InP for use in an all lattice-matched triple-junction design. Given the unexplored nature of this material, we studied the effect of substrate temperature (T sub ) and grou
Publikováno v:
Journal of Applied Physics. 129:025304
Amorphous films of Nb2O5 composition were deposited by thermal atomic layer deposition on (001) Si substrates and subsequently crystallized by annealing in forming gas at temperatures ranging from 550 °C to 1000 °C. After subjecting these films to
Publikováno v:
Journal of Electronic Materials. 45:2102-2107
In order to mitigate the formation of threading dislocations in an In0.1Ga0.9Sb heteroepitaxial buffer layer grown on a (001) GaSb substrate, an AlSb blocking layer was grown within the buffer layer. Transmission electron microscopy measurements reve
Autor:
Jill A. Nolde, Mark E. Twigg, Michael B. Katz, Joel M. Fastenau, Amy W. K. Liu, Keith E. Knipling, Edward H. Aifer, Dmitri Lubyshev, Nicole A. Kotulak
Publikováno v:
Journal of Applied Physics. 128:015302
The Sb concentration profile in an nBn photodetector containing an InAs/InAsSb type-II superlattice is collected and analyzed using atom probe tomography. A 3D reconstruction comprises the full composition of 31 periods. The Sb concentration profile
Publikováno v:
Journal of Crystal Growth. 404:122-129
We report on a two step buffer layer preparation for the growth of InSb quantum wells on a (110) GaAs surface. At each buffer layer step, layer conditions were optimized to produce smooth surfaces compatible with InSb quantum wells. Through varying g
Autor:
Jason D. Geder, Michael A. Daniele, Igor L. Medintz, Jonathan C. Claussen, Marius Pruessner, Antti Mäkinen, Jasenka Verbarg, Brian J. Melde, Mark E. Twigg
Publikováno v:
ACS Applied Materials & Interfaces. 6:17837-17847
Platinum nanourchins supported on microfibrilated cellulose films (MFC) were fabricated and evaluated as hydrogen peroxide catalysts for small-scale, autonomous underwater vehicle (AUV) propulsion systems. The catalytic substrate was synthesized thro
Autor:
Adrian Podpirka, L. M. B. Alldredge, Steven W. Kirchoefer, Wontae Chang, Mark E. Twigg, Jeffrey M. Pond
Publikováno v:
Thin Solid Films. 548:178-185
The structure and composition of Ba0.5Sr0.5TiO3 thin films, sputter deposited on (001) MgO substrates, have been characterized by transmission electron microscopy. Deviations in film stoichiometry are seen to strongly correlate with the structural an