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Title: Measurement of the Short-Range Attractive Force between Ge Plates Using a Torsion Balance

Abstract

We have measured the short-range attractive force between crystalline Ge plates, and found contributions from both the Casimir force and an electrical force possibly generated by surface patch potentials. Using a model of surface patch effects that generates an additional force due to a distance dependence of the apparent contact potential, the electrical force was parametrized using data at distances where the Casimir force is relatively small. Extrapolating this model, to provide a correction to the measured force at distances less than 5 {mu}m, shows a residual force that is in agreement, within experimental uncertainty, with five models that have been used to calculate the Casimir force.

Authors:
; ;  [1];  [2]
  1. Yale University, Department of Physics, P.O. Box 208120, New Haven, Connecticut 06520 (United States)
  2. Theoretical Division, MS B213, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
21370619
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 103; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevLett.103.060401; (c) 2009 The American Physical Society; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CASIMIR EFFECT; GERMANIUM; PLATES; POTENTIALS; TORSION; ELEMENTS; METALS

Citation Formats

Kim, W J, Sushkov, A O, Lamoreaux, S K, and Dalvit, D A. R. Measurement of the Short-Range Attractive Force between Ge Plates Using a Torsion Balance. United States: N. p., 2009. Web. doi:10.1103/PHYSREVLETT.103.060401.
Kim, W J, Sushkov, A O, Lamoreaux, S K, & Dalvit, D A. R. Measurement of the Short-Range Attractive Force between Ge Plates Using a Torsion Balance. United States. https://doi.org/10.1103/PHYSREVLETT.103.060401
Kim, W J, Sushkov, A O, Lamoreaux, S K, and Dalvit, D A. R. Fri . "Measurement of the Short-Range Attractive Force between Ge Plates Using a Torsion Balance". United States. https://doi.org/10.1103/PHYSREVLETT.103.060401.
@article{osti_21370619,
title = {Measurement of the Short-Range Attractive Force between Ge Plates Using a Torsion Balance},
author = {Kim, W J and Sushkov, A O and Lamoreaux, S K and Dalvit, D A. R.},
abstractNote = {We have measured the short-range attractive force between crystalline Ge plates, and found contributions from both the Casimir force and an electrical force possibly generated by surface patch potentials. Using a model of surface patch effects that generates an additional force due to a distance dependence of the apparent contact potential, the electrical force was parametrized using data at distances where the Casimir force is relatively small. Extrapolating this model, to provide a correction to the measured force at distances less than 5 {mu}m, shows a residual force that is in agreement, within experimental uncertainty, with five models that have been used to calculate the Casimir force.},
doi = {10.1103/PHYSREVLETT.103.060401},
url = {https://www.osti.gov/biblio/21370619}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 6,
volume = 103,
place = {United States},
year = {2009},
month = {8}
}