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Ultrathin metallic coatings can induce quantum levitation between nanosurfaces
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.ORCID iD: 0000-0002-9050-5445
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2012 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 100, no 25, 253104- p.Article in journal (Refereed) Published
Abstract [en]

There is an attractive Casimir-Lifshitz force between two silica surfaces in a liquid (bromobenze or toluene). We demonstrate that adding an ultrathin (5-50 angstrom) metallic nanocoating to one of the surfaces results in repulsive Casimir-Lifshitz forces above a critical separation. The onset of such quantum levitation comes at decreasing separations as the film thickness decreases. Remarkably, the effect of retardation can turn attraction into repulsion. From that we explain how an ultrathin metallic coating may prevent nanoelectromechanical systems from crashing together.

Place, publisher, year, edition, pages
2012. Vol. 100, no 25, 253104- p.
Keyword [en]
Critical separation, Metallic coating, Nano-coatings, Nanosurfaces, Silica surface, Ultra-thin
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-99234DOI: 10.1063/1.4729822ISI: 000305676400073ScopusID: 2-s2.0-84863299538OAI: diva2:541864
Swedish Research Council, 70529001

QC 20120725

Correction in: Applied Physics Letters, Vol. 103, Issue. 3, article nr. 039902, doi:10.1063/1.4813451. WOS: 000322146300146

ScopusID: 2-s2.0-84881534502

Available from: 2012-07-25 Created: 2012-07-23 Last updated: 2014-09-15Bibliographically approved

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Persson, Clas
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