We have performed a measurement of the Casimir-Polder force using a magnetically trapped ⁸⁷Rb Bose-Einstein condensate. By detecting perturbations of the frequency of center-of-mass oscillations of the condensate perpendicular to the surface, we are able to detect this force at a distance ~50.3em0exμm, significantly farther than has been previously achieved, and at a precision approaching that needed to detect the modification due to thermal radiation. Additionally, this technique provides a limit for the presence of non-Newtonian gravity forces in the ~10.3em0exμm range.
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Harber et al. (2005) studied this question.