Casimir torque between corrugated metallic plates

Details Casimir torque between corrugated metallic plates Casimir torque between corrugated metallic plates

2007-10-30

arxiv.org/abs/0710.5679v1

Journal of Physics A 41 (2008) 164019

Physics

Quantum Physics

7 pages, 3 figures, contribution to QFEXT07 proceedings

Scientific paper

10.1088/1751-8113/41/16/164019

We consider two parallel corrugated plates and show that a Casimir torque arises when the corrugation directions are not aligned. We follow the scattering approach and calculate the Casimir energy up to second order in the corrugation amplitudes, taking into account nonspecular reflections, polarization mixing and the finite conductivity of the metals. We compare our results with the proximity force approximation, which overestimates the torque by a factor 2 when taking the conditions that optimize the effect. We argue that the Casimir torque could be measured for separation distances as large as 1 $\mu{\rm m}.$

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