Original title: Role of the superconductivity in radiative heat transfer
Authors: Králík, Tomáš ; Musilová, Věra ; Srnka, Aleš ; Fořt, Tomáš ; Frolec, Jiří
Document type: Papers
Conference/Event: Cryogenics 2017 /14./. IIR International Conference, Dresden (DE), 20170515
Year: 2017
Language: eng
Abstract: The absorption and emission of thermal radiation by metals is related to their electrical properties that are influenced by impurities, defects and temperature. We show by some examples of measurements on common metals how different can be the thermal radiative properties. When the heat is transferred across a microscopic vacuum gap in the near field regime, it is possible to achieve a step-like change of the heat\ntransfer based on a superconducting transition. An interesting feature of this effect is the nonlinear thermal conductivity effecting a change of the sign of the differential thermal conductivity across the vacuum gap.
Keywords: near field; superconductivity; thermal radiation
Project no.: LO1212 (CEP), GA14-07397S (CEP)
Funding provider: GA MŠk, GA ČR
Host item entry: 14th Cryogenics 2017. IIR International Conference. Proceedings, ISBN 978-2-36215-022-7, ISSN 0151-1637

Institution: Institute of Scientific Instruments AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0274397

Permalink: http://www.nusl.cz/ntk/nusl-364659


The record appears in these collections:
Research > Institutes ASCR > Institute of Scientific Instruments
Conference materials > Papers