Results 211 to 220 of about 160,361 (258)
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Long-term band-to-band calibration stability of MODIS thermal emissive bands
SPIE Proceedings, 2013The Terra and Aqua MODIS instruments have operated continuously for over 12 and 10 years respectively and are key contributors to the NASA Earth Observing System mission. The calibration for the 16 thermal emissive bands (TEB) is maintained on-orbit through scan-by-scan observations of a temperature controlled blackbody and deep space.
B. N. Wenny +4 more
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Shear Band Formation due to a Thermal Flux Inhomogeneity
SIAM Journal on Applied Mathematics, 1997Summary: The one-dimensional model for the unidirectional shearing of a slab is investigated for the situation in which localized plastic deformation is induced by an inhomogeneity in the thermal flux. The problem is treated as a perturbation of the elastic solution, which persists until plastic deformation becomes significant.
J. A. DiLellio, W. E. Olmstead
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2020
In non-metal materials, phonon transport is the main mechanism of heat transfer and contributes to the most of thermal conductivity. This chapter describes the heat conduction from microscopic and mesoscopic levels, and presents some basic ideas of calculating thermal conductivities from the Boltzmann equation and the concept of engineering phonon band
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In non-metal materials, phonon transport is the main mechanism of heat transfer and contributes to the most of thermal conductivity. This chapter describes the heat conduction from microscopic and mesoscopic levels, and presents some basic ideas of calculating thermal conductivities from the Boltzmann equation and the concept of engineering phonon band
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Thermal expansion contributions to band gap and band offset temperature dependencies
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 1991Using a thermodynamic approach, we examine the role thermal expansion plays in determining the temperature dependence of band gaps and band offsets. Because of the large variation in the standard volume of electrons (or, equivalently, variation in conduction-band deformation potential) with symmetry of the conduction band, most of the band-gap ...
Kevin J. Malloy, James A. Van Vechten
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Thermalization in energy band tails
Journal of Non-Crystalline Solids, 1972Abstract The rate equations for carriers injected into an amorphous semiconductor are considered for a simple model with radiative recombination of injected electron and holes and with emission and absorption of optical phonons of a single energy. The approximate energy dependence of the rate coefficients is calculated for a model of the band tail ...
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Band-to-band tunneling and thermal generation gate-induced drain leakage
IEEE Transactions on Electron Devices, 1988MOSFET oxide scaling for DRAM (dynamic random-access memory) applications can be limited by gate-induced diode leakage, which has been shown previously by experiments at cryogenic temperatures to consist of a thermal volume generation and a band-to-band tunneling mechanism. Tunneling is the dominant mechanism at relatively higher voltages and cryogenic
S.H. Voldman +2 more
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Thermal band selection for the PRISM instrument: 3. Optimal band configurations
Journal of Geophysical Research: Atmospheres, 1998The European Space Agency (ESA) is presently supporting the Processes Research by Imaging Space Mission (PRISM), a project whose aim is the accurate retrieval of land surface temperature (LST) using a new thermal radiometer. Two previous papers have already addressed some aspects of the design and performance requirements for this thermal sensor: the ...
V. Caselles, E. Rubio, C. Coll, E. Valor
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Electronic crosstalk in Terra MODIS thermal emissive bands
SPIE Proceedings, 2015The MODerate-resolution Imaging Spectroradiometer (MODIS) is a legacy Earth remote sensing instrument in the National Aeronautics and Space Administration (NASA) Earth Observing System (EOS). The first MODIS instrument was launched in December 1999 on board the Terra spacecraft.
Junqiang Sun +3 more
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Thermal imaging in the extended shortwave infrared band
Applied OpticsThe extended shortwave infrared (eSWIR) band, spanning the wavelengths between 2 and 2.6 µm, lies between the traditional reflective and emissive bands. The eSWIR band receives fewer thermal photons from terrestrial targets than the midwave infrared (MWIR) or longwave infrared (LWIR) bands by several orders of magnitude, but ...
Angus Hendrick +6 more
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Colorizing single-band thermal night vision images
2010 IEEE International Conference on Image Processing, 2010We consider the problem of assigning single-band thermal night vision image with natural day-time color appearance automatically. We present an approach in which supervised learning is first used to estimate colors of monochromic images. Modeling color distribution of thermal imagery is a challenging problem, since there are insufficient local features
Xiaojing Gu +4 more
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