Results 271 to 280 of about 462,222 (297)
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Physica Status Solidi (a), 1983
The thermal conductivity of HgSe is measured at low temperatures. The pronounced depression in the magnitude of the thermal conductivity above 4 K and other anomalous behaviour observed by other workers at higher temperatures are explained by taking into account the additional scattering of phonons by extended defects or clusters in Callaway's ...
R. Aldana, B. Fernández, S.M. Wasim
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The thermal conductivity of HgSe is measured at low temperatures. The pronounced depression in the magnitude of the thermal conductivity above 4 K and other anomalous behaviour observed by other workers at higher temperatures are explained by taking into account the additional scattering of phonons by extended defects or clusters in Callaway's ...
R. Aldana, B. Fernández, S.M. Wasim
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High Throughput Nanoimaging of Thermal Conductivity and Interfacial Thermal Conductance
Nano Letters, 2022Thermal properties of materials are often determined by measuring thermalization processes; however, such measurements at the nanoscale are challenging because they require high sensitivity concurrently with high temporal and spatial resolutions. Here, we develop an optomechanical cantilever probe and customize an atomic force microscope with low ...
Mingkang Wang +8 more
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The thermal conductivity of metals
Mathematical Proceedings of the Cambridge Philosophical Society, 1938The methods used to measure separately the electronic and lattice heat conductivities κeand κgin a metal are reviewed, and it is pointed out that care is necessary in interpreting the results in view of the underlying assumptions. The equations given by Wilson for κeand for the electrical conductivity σ are used to plot the theoretical values of the ...
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Thermal Conductivity of Glycine
Nature, 1967RECENTLY it has been suggested1–3 that electron spin resonance studies of irradiated amino-acids reveal thermal effects as well as directly induced free radicals. The model proposed is that absorption of radiation energy may lead to a localized heating of small regions; this may allow radical reactions to take place at a rate characteristic of a much ...
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Study on Thermal Conductivity of Polyetheretherketone/Thermally Conductive Filler Composites [PDF]
Solid State Phenomena, 2007 Thermal properties of PEEK/silicon carbide(SiC) and PEEK/carbon fiber(CF) were investigated from ambient temperature up to 200°C measured by laser flash method. Thermal conductivity was increased from 0.29W/m-K without filler up to 2.4 W/m-K with at 50 volume % SiC and 3.1W/m-K with 40 volume % carbon fiber.
Dong Ju Kim +4 more
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Thermal conductivity of SIMFUEL
Journal of Nuclear Materials, 1992Abstract Thermal diffusivity and specific heat of SIMFUEL — simulated high-burnup UO 2 fuel with an equivalent burnup of 3 and 8 at% — were measured between 300 and 1800 K, and the data were combined to obtain the thermal conductivities. The thermal conductivity of SIMFUEL provides a model for the intrinsic conductivity of high-burnup fuels (i.e ...
Hj. Matzke +3 more
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The thermal conductivity of leaves
Planta, 1975Thermal conductivities of fresh leaves, both unmodified and infiltrated with water, were measured. Samples were placed between silver plates of known and differing temperatures, and the time required to boil off a constant volume of liquid was measured. The species used are evergreens: Eucalyptus globulus Labill.
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Thermal Conductivity. Part II.: Thermal Conductivity of Badly-conducting Solids
Proceedings of the Physical Society of London, 1914The thermal conductivities of a selection of non-metals at 20°C. and 100°C. have been determined by precisely the same method, and in the main the same apparatus as was recently employed by the author in the determination of the "Thermal conductivity of some of the rarer metals and alloys." The substances treated were in the form of accurately turned ...
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Thermal Conductivity of Liquids
Physical Review, 1941At present it may be said that there is no satisfactory theory of the mechanism of thermal conduction in liquids, although it is recognized' that the mechanism of thermal conduction in liquids must be different from that in a gas. The mechanism of thermal conduction outlined here refers to the melting point and leads us to an expres-sion for the ...
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Thermal conductivity of superconductors
Physica, 1953where ~ and /5 are due to the scattering of electrons by phonons and by impurities respectively. As the metal becomes superconductive its thermal conductivity K8 falls below the value of the normal phase Kn which is given by (1) as 1/W. This decrease in conductivity is caused by the gradual disappearance from the thermal distribution of the free ...
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