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Casimir force between atomically thin gold films
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Flerskalig materialmodellering.
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Flerskalig materialmodellering.ORCID-id: 0000-0002-9050-5445
2013 (engelsk)Inngår i: European Physical Journal B: Condensed Matter Physics, ISSN 1434-6028, E-ISSN 1434-6036, Vol. 86, nr 2, s. 43-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2013. Vol. 86, nr 2, s. 43-
Emneord [en]
Der-Waals Forces, Mu-M Range, Lifshitz Theory, Liquid Helium, Van
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-120557DOI: 10.1140/epjb/e2012-31051-9ISI: 000316064100014Scopus ID: 2-s2.0-84878501056OAI: oai:DiVA.org:kth-120557DiVA, id: diva2:616063
Forskningsfinansiär
Swedish Research Council, 90499401 70529001
Merknad

QC 20130415

Tilgjengelig fra: 2013-04-15 Laget: 2013-04-11 Sist oppdatert: 2017-12-06bibliografisk kontrollert

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