Casimir force between atomically thin gold films

Mathias Boström, Clas Persson and Bo E. Sernelius ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2013, vol. 86, issue 2, 1-4

Abstract: We have used density functional theory to calculate the anisotropic dielectric functions for ultrathin gold sheets (composed of 1, 3, 6, and 15 atomic layers). Such films are important components in nano-electromechanical systems. When using correct dielectric functions rather than bulk gold dielectric functions we predict an enhanced attractive Casimir-Lifshitz force (at most around 20%) between two atomically thin gold sheets. For thicker sheets the dielectric properties and the corresponding Casimir forces approach those of gold half-spaces. The magnitude of the corrections that we predict should, within the today’s level of accuracy in Casimir force measurements, be clearly detectable. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Keywords: Mesoscopic and Nanoscale Systems (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1140/epjb/e2012-31051-9

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