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Fluctuational electromagnetic interaction between a moving particle and a flat surface covered with a thin adsorbed film

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Abstract

The effect of a thin adsorbed film on the fluctuational electromagnetic tangential force of interaction between a moving nanoparticle and a flat solid surface was theoretically studied for the first time in a nonrelativistic approximation. Particular calculations were performed for a metal film on a dielectric and for a dielectric film on a metal. In both cases, the nanoparticle is assumed to be made of a nonmagnetic metal. It is shown that, at a normal temperature, the presence of an adsorbed film may lead to an increase in the tangential friction force by one or two orders of magnitude for a certain relation between the particle distance from the surface and the film thickness. In the case of a dielectric film on a metal substrate, a decrease in the temperature is accompanied by exponential decrease in the viscous friction. For a metal film on a dielectric substrate, the tangential force exhibits a quadratic dependence on the temperature.

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Authors and Affiliations

  1. Kabardino-Balkarian State University, Nal’chik, Kabardino-Balkaria, Russia

    G. V. Dedkov

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  1. G. V. Dedkov
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Translated from Pis’ma v Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 30, No. 16, 2004, pp. 65–73.

Original Russian Text Copyright © 2004 by Dedkov.

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Dedkov, G.V. Fluctuational electromagnetic interaction between a moving particle and a flat surface covered with a thin adsorbed film. Tech. Phys. Lett. 30, 693–696 (2004). https://doi.org/10.1134/1.1792316

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  • DOI: https://doi.org/10.1134/1.1792316

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