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Phys. Rev. Lett. 101, 030401 (2008) [4 pages]

Measurement of the Casimir Force between a Gold Sphere and a Silicon Surface with Nanoscale Trench Arrays

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H. B. Chan*, Y. Bao, and J. Zou
Department of Physics, University of Florida, Gainesville, Florida 32611, USA

R. A. Cirelli, F. Klemens, W. M. Mansfield, and C. S. Pai
Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA

See Also: Erratum

Received 20 March 2008; published 14 July 2008

See accompanying Physics Viewpoint

We report measurements of the Casimir force between a gold sphere and a silicon surface with an array of nanoscale, rectangular corrugations using a micromechanical torsional oscillator. At distances between 150 and 500 nm, the measured force shows significant deviations from the pairwise additive formulism, demonstrating the strong dependence of the Casimir force on the shape of the interacting bodies. The observed deviation, however, is smaller than the calculated values for perfectly conducting surfaces, possibly due to the interplay between finite conductivity and geometry effects.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.030401
DOI:
10.1103/PhysRevLett.101.030401
PACS:
03.70.+k, 12.20.Fv, 12.20.Ds, 42.50.Lc

*hochan@phys.ufl.edu

See Also

Erratum: H. B. Chan, Y. Bao, J. Zou, R. A. Cirelli, F. Klemens, W. M. Mansfield, and C. S. Pai, Erratum: Measurement of the Casimir Force between a Gold Sphere and a Silicon Surface with Nanoscale Trench Arrays [Phys. Rev. Lett. 101, 030401 (2008)], Phys. Rev. Lett. 107, 019901 (2011).

 
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