Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6639

DEMONSTRATING THE STRONG GEOMETRY DEPENDENCE OF THE CASIMIR FORCE ON A SURFACE WITH DEEP, NANOSCALE CORRUGATIONS

Authors Chan, H. B.
Bao, Y.
Zou, J.
Cirelli, R. A.
Klemens, F.
Mansfield, W. M.
Pai, C. S.
Issue Date 2010
Source INTERNATIONAL JOURNAL OF MODERN PHYSICS A , v. 25, (11), 2010, APR 30, p. 2212-2222
Summary We measure the Casimir force gradient between silicon surfaces with nanoscale, rectangular corrugations and a gold sphere attached to a micromechanical torsional oscillator. By comparing the force gradients on the corrugated surfaces to that on a smooth, flat surface of the same material, we demonstrate that the Casimir force deviates from the value expected from the pairwise additive approximation and the proximity force approximation. The observed deviation qualitatively agrees with calculations that take into account the interplay between finite conductivity and geometry effects. However, the agreement is not exact, possibly due to uncertainties in the optical properties of the silicon substrate.
Subjects
ISSN 0217-751X
Rights Electronic version of an article published as International Journal of Modern Physics A, v. 25, iss. 11, 2010, p. 2212-2222, [10.1142/s0217751x10049487] (c) copyright World Scientific Publishing Company http://www.worldscinet.com/ijmpa
Language English
Format Article
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