Radiative heat transfer and noncontact friction between nanostructures
A.I. Volokitin a,
B.N.J. Persson b
a Samara State Technical University, ul. Molodogvardeiskaya 244, Samara, 443100, Russian Federation
b Institute of Solid State Research, Research Centre Jülich, Leo-Brandt-Straße, Jülich, D-52425, Germany
All material bodies are surrounded by a fluctuating
electromagnetic field because of thermal and quantum fluctuations of the current density inside them. A general formalism for
the calculation of the spectrum of fluctuations of this electromagnetic field is presented and applied to the radiative heat
transfer and van der Waals friction. The radiative heat transfer
and the van der Waals friction are greatly enhanced at short
separations (d λT = cħ/kBT) between the bodies due to eva-
nescent electromagnetic waves. Particularly strong enhancement occurs if the surfaces of the bodies can support localized
surface modes such as surface plasmons, surface polaritons, or adsorbate vibrational modes. Electrostatic and phonon mechanisms of noncontact friction are also discussed. The theory is
compared with the experimental results.
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