Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Mark P. McNeal"'
Publikováno v:
Journal of Applied Physics. 83:3288-3297
The use of ferroelectric ceramics and thin films in microwave devices requires that they possess frequency-stable, low-loss dielectric properties. At microwave frequencies, ferroelectric polycrystalline ceramic materials typically exhibit a large die
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::488d78b62fdb1c3d0959b39106d56df3
https://doi.org/10.1063/1.367097
https://doi.org/10.1063/1.367097
Publikováno v:
Ferroelectrics. 211:153-164
Dielectric measurements on BaTiO3 ceramics and BaTiO3 powder-polypropylene composites were carried out in the microwave frequency range. Lumped impedance, cavity perturbation, and post resonance techniques were employed through 5GHz. Ceramic BaTiO3 e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b884b67b660128be88bf4e731375896
https://doi.org/10.1080/00150199808232340
https://doi.org/10.1080/00150199808232340
Autor:
J. Raviprakash, Irina Puscasu, Edward A. Johnson, Jing Gong Cheng, Ashak Shah, Anton C. Greenwald, Susan Trolier-McKinstry, Martin U. Pralle, Mark P. McNeal
Publikováno v:
Scopus-Elsevier
We examined lanthanum doped lead barium titanate films for temperature measurements of photonic crystal - MEMS devices. Films were deposited by sol-gel techniques and crystallized in air above 650°C. X-ray diffraction spectra consistent with the per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e920f107560800242d92073ecb17db1
https://doi.org/10.1557/proc-0952-f10-08
https://doi.org/10.1557/proc-0952-f10-08
Publikováno v:
Chemical and Biological Sensors for Industrial and Environmental Security.
A compact, low-cost, multi-wavelength NDIR sensor was designed to measure G-type CW agents at ppm-levels. This 4-color sensor can distinguish between the different agents (sarin, soman, tabun) and is more sensitive than a single wavelength sensor. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92e75002ae29332d80f0a66dbb7a6aa3
https://doi.org/10.1117/12.630888
https://doi.org/10.1117/12.630888
Autor:
E. Johnson, Ashish A. Shah, Anton C. Greenwald, Martin U. Pralle, Mark P. McNeal, Irina Puscasu
Publikováno v:
SPIE Proceedings.
Ion Optics has developed a thin silicon membrane MEMS device that replaces the thermal source, IR filter, IR detector and mechanical chopper in conventional non-dispersive infrared gas sensors. The key enabling technology is a 2-D photonic crystal. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2dab3d25a2c8e868650a9edc3e837a0b
https://doi.org/10.1117/12.630900
https://doi.org/10.1117/12.630900
Autor:
Irina Puscasu, Mark P. McNeal, Martin U. Pralle, Anton C. Greenwald, James Melnyk, Edward A. Johnson
Publikováno v:
SPIE Proceedings.
Light-weight, low-power consumption, low-cost IR so urces are required for combat ID (IFF, identify friend or foe), trail markers, pallet markers, etc. They must be visible with co nventional viewers at 200 mete rs in the 3-5 micron or 8-12 micron ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd17f940b054d5894880f2ce649b2021
https://doi.org/10.1117/12.603961
https://doi.org/10.1117/12.603961
Autor:
Mark P. McNeal, Anton C. Greenwald, Martin U. Pralle, Edward A. Johnson, James T. Daly, Irina Puscasu
Publikováno v:
SPIE Proceedings.
Sensors of trace gases are of enormous importance to diverse fields such as environmental protection, household safety, homeland security, bio-hazardous material identification, meteorology and industrial environments. The gases of interest include C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57e105e25f0cefcbd71f252bdf2c2207
https://doi.org/10.1117/12.559644
https://doi.org/10.1117/12.559644
Publikováno v:
MRS Proceedings. 782
MEMS devices have unique packaging considerations compared to conventional semiconductor devices. They tend to have relatively large die size and many architectures cannot tolerate elevated temperatures. Often these devices require a vacuum environme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd54b38adf2970092eb0dac6a2acd484
https://doi.org/10.1557/proc-782-a5.32
https://doi.org/10.1557/proc-782-a5.32
Publikováno v:
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics.
Dielectric measurements on BaTiO/sub 3/ ceramics and BaTiO/sub 3/ powder-polypropylene composites were carried out through microwave frequencies using various techniques. Ceramic BaTiO/sub 3/ exhibited a large relaxation with a peak in the loss occur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5aa36b571e1dafeab43792e904ad98ec
https://doi.org/10.1109/isaf.1996.598154
https://doi.org/10.1109/isaf.1996.598154
Autor:
Mark P. McNeal, Nicholas Moelders, Martin U. Pralle, Irina Puscasu, Lisa Last, William Ho, Anton C. Greenwald, James T. Daly, Edward A. Johnson, Thomas George
Publikováno v:
SPIE Proceedings.
Inexpensive optical MEMS gas and chemical sensors offer chip-level solutions to environmental monitoring, industrial health and safety, indoor air quality, and automobile exhaust emissions monitoring. Previously, Ion Optics, Inc. reported on a new de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03595b90c508a768f0f742c83009d086
https://doi.org/10.1117/12.482316
https://doi.org/10.1117/12.482316