Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Matt Kirley"'
Autor:
John H. Booske, Matt Kirley
Publikováno v:
2015 IEEE International Vacuum Electronics Conference (IVEC).
Effective terahertz (THz) component and systems design requires accurate predictive models for the frequency-dependent conductivity of materials. We have measured the THz conductivity of metals (including rough surface effects) and doped silicon at 0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81878bee15af971d3b856facabaa1525
https://doi.org/10.1109/ivec.2015.7223746
https://doi.org/10.1109/ivec.2015.7223746
Publikováno v:
IVEC 2012.
We present experimentally measured electromagnetic attenuation losses due to water vapor at 400 GHz. The measurements are made using a hermetically sealed high-Q quasi-optical resonator system, which allows for control of water vapor levels. We compa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97ad6d6a11b3ebce01f71de8c5710f4f
https://doi.org/10.1109/ivec.2012.6262148
https://doi.org/10.1109/ivec.2012.6262148
Publikováno v:
IVEC 2012.
A high-quality-factor quasi-optical resonator operating at 650 GHz is used to measure the conductivity of mechanically roughened metal surfaces. The results explore the effective conductivity of metals in the terahertz regime when the surface roughne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c192ec0d55927bfd70578a5d4771ae2
https://doi.org/10.1109/ivec.2012.6262147
https://doi.org/10.1109/ivec.2012.6262147
Autor:
Irena Knezevic, Matt Kirley, Ben Yang, Marcus J. Weber, K. J. Willis, Susan C. Hagness, Nishant Sule, John H. Booske
Publikováno v:
2011 International Conference on Infrared, Millimeter, and Terahertz Waves.
The conductivity of doped silicon is measured at 400 and 650 GHz. Measurements are performed using a high quality factor, semi-confocal resonant cavity. Data is presented which contradicts conventional theory (Drude model) and in agreement with a mul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b01ce7aff7a528eafb0be6e9db44462d
https://doi.org/10.1109/irmmw-thz.2011.6105218
https://doi.org/10.1109/irmmw-thz.2011.6105218
Publikováno v:
2011 International Conference on Infrared, Millimeter, and Terahertz Waves.
A high-Q quasi-optical resonator operating at 400 GHz and 650 GHz is used to measure the conductivity of metal samples with nano-scale textures made using a LIGA-like nanoimprinting process. The results explore the effect of surface roughness on effe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14ad0a6b305d6519c22fa8733dc0cfed
https://doi.org/10.1109/irmmw-thz.2011.6104794
https://doi.org/10.1109/irmmw-thz.2011.6104794
Autor:
Marcus J. Weber, John Scharer, Nishant Sule, John H. Booske, Bozidar Novakovic, Matt Kirley, Irena Knezevic
Publikováno v:
2011 IEEE International Vacuum Electronics Conference (IVEC).
We report experiments and analysis of field emission from metallic knife-edge cathodes coated with thin film Lanthanum Hexaboride (LaB6), a low work function material (∼2.5 eV). The emission current density is found to depend sensitively on film pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::161d467cf6c0b96ef24c8b672e1380a2
https://doi.org/10.1109/ivec.2011.5746892
https://doi.org/10.1109/ivec.2011.5746892
Publikováno v:
2010 Abstracts IEEE International Conference on Plasma Science.
We report experiments and analysis of field emission from copper knife-edge (CKE) cathodes, both bare and coated with low work function (2.6 eV) Lanthanum hexaboride (LaB6) thin films. The bare CKE cathode exhibits evidence of space charge limited em
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e066ee4494186ab51c6dc1d46cb77095
https://doi.org/10.1109/plasma.2010.5534214
https://doi.org/10.1109/plasma.2010.5534214
Publikováno v:
2010 Abstracts IEEE International Conference on Plasma Science.
The design, fabrication and initial measurements and analysis of an X-band high power microwave (HPM) limiter are presented. The microwave discharge test chamber is an L-band rectangular waveguide with Lexan or Rexolite microwave windows. The chamber
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fe65a17aa45068bd5585faaa8ad12db
https://doi.org/10.1109/plasma.2010.5533981
https://doi.org/10.1109/plasma.2010.5533981
Publikováno v:
2010 IEEE International Vacuum Electronics Conference (IVEC).
We report experiments and analysis of field emission from copper knife-edge (CKE) cathodes, both bare and coated with low work function (∼2.5 eV) Lanthanum hexaboride (LaB 6 ) thin films. The bare CKE cathode exhibits evidence of space charge limit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aede6c0c50c761db8f22a1fcd7751f8b
https://doi.org/10.1109/ivelec.2010.5503529
https://doi.org/10.1109/ivelec.2010.5503529
Publikováno v:
2010 IEEE International Vacuum Electronics Conference (IVEC).
The design, fabrication, initial measurements and analysis of an X-band high power microwave (HPM) limiter are presented. The microwave discharge test chamber is an L-band rectangular waveguide with Lexan or Rexolite microwave windows. The chamber is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c6bc639bbb91164734178a4e40af471
https://doi.org/10.1109/ivelec.2010.5503459
https://doi.org/10.1109/ivelec.2010.5503459