Measurement of the Casimir force between a gold sphere and a silicon surface with nanoscale trench arrays.

Abstract

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.

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Cite this paper

@article{Chan2008MeasurementOT, title={Measurement of the Casimir force between a gold sphere and a silicon surface with nanoscale trench arrays.}, author={Ho Bun Chan and Yi Bao and Jun Zou and Raymond A. Cirelli and Fred P. Klemens and William M. Mansfield and C S Pai}, journal={Physical review letters}, year={2008}, volume={101 3}, pages={030401} }