Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Tzu Chien Wen"'
Publikováno v:
Sensors, Vol 20, Iss 14, p 3857 (2020)
To diagnose neurodegenerative diseases (NDDs), physicians have been clinically evaluating symptoms. However, these symptoms are not very dependable—particularly in the early stages of the diseases. This study has therefore proposed a novel classifi
Externí odkaz:
https://doaj.org/article/2559603d692d4ec295e2bebef3bc7a4b
Autor:
Tzu Chien Wen, Dinesh K. Shetty
Publikováno v:
Journal of the American Ceramic Society. 99:551-556
The applicability of particle light scattering theories to light attenuation in birefringent polycrystalline ceramics was investigated by measuring light transmittance in a model two-phase system. The system consisted of microspheres of silica disper
Autor:
Tzu Chien Wen, Dinesh K. Shetty
Publikováno v:
Journal of the American Ceramic Society. 98:829-837
Light transmission in polycrystalline magnesium fluoride was studied as a function of the mean grain size at different wavelengths. The mean grain size was varied by annealing hot-pressed billets in argon atmosphere at temperatures ranging from 600°
Publikováno v:
Ceramics International. 39:8421-8427
Fully-dense, polycrystalline yttria (Y2O3) exhibits high infrared (ER) transmittance in the full mid range (3-5 mu m) with low emittance, but lacks thermal-shock resistance for high-performance aerospace applications due to its low strength and high
Autor:
Tzu Chien Wen, Dinesh K. Shetty, Erinn Sörge, Lee R. Cambrea, Niladri Dasgupta, Bruce Butler, Daniel C. Harris
Publikováno v:
Journal of Materials Science. 47:6286-6296
A low thermal-expansion material was synthesized with potential application in thermal-shock-resistant infrared-transmitting windows. The material is derived from a solid solution of Al2(WO4)3, which has positive thermal expansion, and Sc2(WO4)3 with
Autor:
Tzu-Chien Wen, Meghan Baronowski, David E. Zelmon, Mark V. Parish, Lee R. Cambrea, Linda F. Johnson, Lawrence Baldwin, Daniel C. Harris, Marina R. Pascucci, John J. Gannon, William B. Poston, John D. Kunkel
Publikováno v:
Optical Engineering. 56:077103
The refractive index of fully dense, infrared-transparent polycrystalline alumina (PCA) with a mean grain size of ∼0.6 μm is reported for the wavelength range 0.85 to 5.0 μm over the temperature range T=296 to 498 K. The temperature-dependent Sel
Publikováno v:
SPIE Proceedings.
Materials and Systems Research, Inc. is developing a material with a low coefficient of thermal expansion (CTE) that could be used in an infrared-transparent window. The material is derived from a solid solution of Al 2 (WO 4 ) 3 , which has positive
Autor:
Dinesh K. Shetty, Tzu Chien Wen
Publikováno v:
SPIE Proceedings.
Grain-boundary scattering due to intrinsic birefringence limits the optical transmittance of polycrystalline alumina (PCA). Smallest grain size and highest density are desired for maximum real in-line transmittance (RIT). Grain size versus density or
Autor:
Dinesh K. Shetty, Tzu Chien Wen
Publikováno v:
Window and Dome Technologies and Materials XI.
Grain boundaries scatter light in polycrystalline materials consisting of birefringent crystals. Apetz and van Bruggen developed a model for grain-boundary scattering based on Rayleigh-Gans-Debye light-scattering theory and demonstrated its applicati
Autor:
Johnson, Linda F., Harris, Daniel C., Cambrea, Lee, Baldwin, Lawrence, Baronowski, Meghan, Zelmon, David E., Poston, William B., Kunkel, John D., Parish, Mark, Pascucci, Marina R., Gannon Jr., John J., Tzu-Chien Wen
Publikováno v:
Optical Engineering; Jul2017, Vol. 56 Issue 7, p1-11, 11p