About: Cryogenic apparatus for study of near-field heat transfer

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	For bodies spaced in vacuum at distances shorter than the wavelength of the thermal radiation, radiative heat transfer substantially increases due to the contribution of evanescent electromagnetic waves. Experimental data on heat transfer in near-field regime are scarce. We have designed a cryogenic apparatus for the study of heat transfer over microscopic distances between metallic and non-metallic surfaces. Using a mechanical positioning system, a planeparallel gap between the samples, concentric disks, each 35 mm in diameter, is set and varied from 10(0) to 10(3) mu m. The heat transferred from the hot (10 - 100 K) to the cold sample (similar to 5 K) sinks into a liquid helium bath through a thermal resistor, serving as a heat flux meter. Transferred heat power within similar to 2 nW/cm(2) and similar to 30 mu W/cm(2) is derived from the temperature drop along the thermal resistor. For bodies spaced in vacuum at distances shorter than the wavelength of the thermal radiation, radiative heat transfer substantially increases due to the contribution of evanescent electromagnetic waves. Experimental data on heat transfer in near-field regime are scarce. We have designed a cryogenic apparatus for the study of heat transfer over microscopic distances between metallic and non-metallic surfaces. Using a mechanical positioning system, a planeparallel gap between the samples, concentric disks, each 35 mm in diameter, is set and varied from 10(0) to 10(3) mu m. The heat transferred from the hot (10 - 100 K) to the cold sample (similar to 5 K) sinks into a liquid helium bath through a thermal resistor, serving as a heat flux meter. Transferred heat power within similar to 2 nW/cm(2) and similar to 30 mu W/cm(2) is derived from the temperature drop along the thermal resistor. (en)
Title	Cryogenic apparatus for study of near-field heat transfer Cryogenic apparatus for study of near-field heat transfer (en)
skos:prefLabel	Cryogenic apparatus for study of near-field heat transfer Cryogenic apparatus for study of near-field heat transfer (en)
skos:notation	RIV/68081731:_____/11:00368238!RIV12-AV0-68081731
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA100650804), Z(AV0Z20650511)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Hanzelka, Pavel Srnka, Aleš Zobač, Martin Musilová, Věra Králík, Tomáš
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav přístrojové techniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	192322
http://linked.open...ai/riv/idVysledku	RIV/68081731:_____/11:00368238
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	cryogenics; heat measurement; heat radiation; micrometry; radiative transfer; thermistors (en)
http://linked.open.../riv/klicoveSlovo	cryogenics heat measurement heat radiation micrometry radiative transfer thermistors
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[8C8DA34F0A62]
http://linked.open...i/riv/nazevZdroje	Review of Scientific Instruments
http://linked.open...in/vavai/riv/obor	BJ
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Microscale radiative heat transfer at low temperatures
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	82
http://linked.open...iv/tvurceVysledku	Hanzelka, Pavel Králík, Tomáš Musilová, Věra Srnka, Aleš Zobač, Martin
http://linked.open...ain/vavai/riv/wos	000291106700052
http://linked.open...n/vavai/riv/zamer	Research into experimental methods for examination of the physical properties of matter and their application in advanced technologies
issn	0034-6748
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1063/1.3585985

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