Zobrazeno 1 - 7
of 7
pro vyhledávání: '"M. P. Kirley"'
Autor:
M. P. Kirley, John H. Booske
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 5:1012-1020
Terahertz (THz) radiation holds great promise for applications in communications, molecular detection, and imaging. Effective THz system design requires accurate models for the frequency-dependent conductivity of metals and the effect of surface roug
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a47f7e1ee2cfaf8e27d41e1169b6cf49
https://doi.org/10.1109/tthz.2015.2468074
https://doi.org/10.1109/tthz.2015.2468074
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 4:368-375
While models for conductivity in the terahertz regime are improving, there is limited data on the effects of submicrometer roughness features on conductivity. We present direct measurements of the effective conductivity of samples with periodic contr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::306b03f365ade05416ce340a2075cd18
https://doi.org/10.1109/tthz.2014.2310121
https://doi.org/10.1109/tthz.2014.2310121
Autor:
John H. Booske, M. P. Kirley
Publikováno v:
IEEE International Vacuum Electronics Conference.
We find that the surface resistance of smooth copper exceeds that predicted by classical electromagnetic theory. We have fabricated copper surfaces with controlled roughness and grain size. We will present measurements of the reflectivity of these co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16b1e7fa03a85e7a27cc0309cd3435e6
https://doi.org/10.1109/ivec.2014.6857537
https://doi.org/10.1109/ivec.2014.6857537
Autor:
John H. Booske, M. P. Kirley
Publikováno v:
2013 Abstracts IEEE International Conference on Plasma Science (ICOPS).
Previous study on the surface resistivity of copper surfaces measured at 400 and 650 GHz has been extended to 850 GHz. These measurements were conducted using a high quality factor quasi-optical hemispherical resonator. The measurements of the surfac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00b339107ac580abe9eeb2763de8c322
https://doi.org/10.1109/plasma.2013.6635222
https://doi.org/10.1109/plasma.2013.6635222
Autor:
M. P. Kirley, John H. Booske
Publikováno v:
2013 IEEE 14th International Vacuum Electronics Conference (IVEC).
We find that the surface resistance of copper exceeds that predicted by classical electromagnetic theory. The small but significant discrepancy we find is consistent with results reported in adjacent frequency ranges. We will also present measurement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a0aa47f56c4d3675f3f8c8d88731be2
https://doi.org/10.1109/ivec.2013.6571091
https://doi.org/10.1109/ivec.2013.6571091
Publikováno v:
2012 Abstracts IEEE International Conference on Plasma Science.
Summary form only given. The terahertz (THz) regime, commonly designated as the frequency region between 300 GHz and 3 THz, is relatively underutilized compared to other areas of the electromagnetic spectrum. However, THz radiation has many potential
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc6a4dfe836a5e2b93b38e2439a1cf3a
https://doi.org/10.1109/plasma.2012.6383828
https://doi.org/10.1109/plasma.2012.6383828
Autor:
Nishant Sule, Marcus J. Weber, John H. Booske, Irena Knezevic, Bozidar Novakovic, M. P. Kirley
Publikováno v:
Journal of Applied Physics. 111:063717
We report experiments and analysis of field emission from metallic knife-edge cathodes, which are sputter-coated with thin films of lanthanum hexaboride (LaB6), a low-work function material. The emission current is found to depend sensitively on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::538f2bd6014f3d2bd366cd1ba59e0f56
https://doi.org/10.1063/1.3698281
https://doi.org/10.1063/1.3698281