2003/08/26 by Cecilia Noguez, Carlos E. Roman-Velazquez, R. Esquivel-Sirvent +3
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1209/epl/i2003-10282-0
published as Europhys. Lett. 67, 191 (2004) · 7 pages including 2 figures. Submitted to Europjysics Letters
arxiv created 2003/10/10 · arxiv updated 2009/12/01
We calculate exactly the Casimir force or dispersive force, in the non-retarded limit, between a spherical nanoparticle and a substrate beyond the London's or dipolar approximation. We find that the force is a non-monotonic function of the distance between the sphere and the substrate, such that, it is enhanced by several orders of magnitude as the sphere approaches the substrate. Our results do not agree with previous predictions like the Proximity theorem approach.