Reducing thermal conductivity of crystalline solids at high temperature using embedded nanostructures.

Reducing thermal conductivity of crystalline solids at high temperature using embedded nanostructures. Research Abstract Details 

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Reducing thermal conductivity of crystalline solids at high temperature using embedded nanostructures. Abstract Text:

Thermal conductivity of a crystalline solid at high temperature is dominated by the Umklapp process because the number of high frequency phonons increases with temperature. It is challenging to reduce the thermal conductivity of crystalline solids at high temperature although it is widely known that, by increasing the atomic defect concentration, thermal conductivity of crystalline solids can be reduced at low temperature. By increasing the concentration of ErAs nanoparticles in In 0.53Ga 0.47As up to 6 atom %, we demonstrate a thermal conductivity reduction by almost a factor of 3 below that of In 0.53Ga 0.47As at high temperature. A theoretical model suggests that the mean free path of the low frequency phonons is suppressed by increasing the ErAs nanoparticle concentration.

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Reducing thermal conductivity of crystalline solids at high temperature using embedded nanostructures. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Nano letters

VOLUME: 8

Page Numbers: 2097-9

Journal Abbreviation: Nano Lett.

ISSN: 1530-6984

DAY: 29

MONTH: 05

YEAR: 2008

Reducing thermal conductivity of crystalline solids at high temperature using embedded nanostructures. Information

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LANGUAGE: eng

NlmUniqueID: 101088070

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Grant and Affiliation Information for Reducing thermal conductivity of crystalline solids at high temperature using embedded nanostructures.

AFFILIATION: woochul@yonsei.ac.kr.

Country: United States

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MEDLINETA: Nano Lett

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