This paper presents the results of calculating the Casimir–Lifshitz friction force and the heating rate of a small metal particle moving above a metal surface (thick plate) in the case of their different local temperatures. The case of normal nonmagnetic metals (Au) is considered. There is a strong interplay of temperatures, particle velocity, and separation distance, which leads to an anomalous direction of the heat flow between bodies and a peak temperature dependence of the friction force at sufficiently low temperatures of the order of 1–10 K. In particular, a “hot” moving particle can additionally receive heat from a “cold” surface. The conditions for experimental measurement of these effects are discussed.
Nonequilibrium Casimir–Lifshitz friction force and anomalous radiation heating of a small particle
Note: This paper is part of the APL Special Collection on Thermal Radiation at the Nanoscale and Applications.
G. V. Dedkov; Nonequilibrium Casimir–Lifshitz friction force and anomalous radiation heating of a small particle. Appl. Phys. Lett. 5 December 2022; 121 (23): 231603. https://doi.org/10.1063/5.0115748
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