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IIR document

Role of the superconductivity in radiative heat transfer.

Number: pap. n. 0103

Author(s) : KRALIK T., MUSILOVA V., SRNKA A., et al.

Summary

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 transfer 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.

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Pages: 7 p.

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Details

  • Original title: Role of the superconductivity in radiative heat transfer.
  • Record ID : 30021760
  • Languages: English
  • Source: Cryogenics 2017. Proceedings of the 14th IIR International Conference: Dresden, Germany, Mai 15-19, 2017.
  • Publication date: 2017/05/15
  • DOI: http://dx.doi.org/10.18462/iir.cryo.2017.0103

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