2006/10/10 by Robson B. Rodrigues, Paulo A. Maia Neto, A. Lambrecht +1 · 1 citation
Physics and Astronomy · #quant-ph #hep-th
paper · pdf · doi:10.1209/epl/i2006-10340-1
published as Europhys.Lett.76:822-828,2006 · 7 pages, 4 figures, to appear in Europhysics Letters. Technical problem with eps file for figure 4 was fixed
arxiv created 2006/10/10 · arxiv updated 2010/12/17
We study the torque arising between two corrugated metallic plates due to the interaction with electromagnetic vacuum. This Casimir torque can be measured with torsion pendulum techniques for separation distances as large as 1μm. It allows one to probe the nontrivial geometry dependence of the Casimir energy in a configuration which can be evaluated theoretically with accuracy. In the optimal experimental configuration, the commonly used proximity force approximation turns out to overestimate the torque by a factor 2 or larger.