Modeling electrostatic patch effects in Casimir force measurements

@article{Behunin2012ModelingEP,
  title={Modeling electrostatic patch effects in Casimir force measurements},
  author={Ryan O. Behunin and Francesco Intravaia and Diego A. R. Dalvit and Paulo A. Maia Neto and Serge Reynaud},
  journal={Physical Review A},
  year={2012},
  volume={85},
  pages={012504}
}
Electrostatic patch potentials give rise to forces between neutral conductors at distances in the micrometer range and must be accounted for in the analysis of Casimir force experiments. In this paper we develop a quasilocal model for describing random potentials on metallic surfaces. In contrast to some previously published results, we find that patches may provide a significant contribution to the measured signal and thus may be a more important systematic effect than was previously… Expand

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The effect of patch potentials in Casimir force measurements determined by heterodyne Kelvin probe force microscopy.
TLDR
It is demonstrated that HAM-KPFM improves the spatial resolution of surface potential measurements compared to amplitude modulated Kelvin probe force microscopy, and it is found that patch potentials vary depending on sample preparation, and that the calculated pressure can be similar to the pressure difference between Casimir force calculations employing the plasma and Drude models. Expand
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