2012
DOI: 10.1103/physreva.86.042504
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Electrostatic calibration method for large-amplitude dynamic Casimir force measurements

Abstract: Electrostatic calibration is important in Casimir force measurements. It is necessary for the estimation of the unknown system parameters such as the absolute separation distance and the identification of the electrostatic force model. Correct estimates of the unknown parameters and the electrostatic force model are crucial for interpreting the Casimir force data. In this paper, we present an electrostatic calibration method with higher sensitivity and robustness. It is based on large-amplitude dynamic force m… Show more

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Cited by 1 publication
(3 citation statements)
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“…43) 4.4 V p -dependent dissipation curves Measuring V Ã cpd ðzÞ is important not only to obtain F ele but also to check the homogeneity of the tip-sample system. For example, Casimir force measurement is usually carried out by measuring the force between a large sphere and a metal plate, 4,[32][33][34] where the interaction areas of the two objects are large compared with those of the tip-sample system such as in our experiment. Under this condition, electrostatic contributions by the body part of the tip in our experiment are strongly enhanced, and thus, the existence of fractional patch potentials becomes a serious problem in the precise extraction of the Casimir force.…”
Section: Comparison Of A(z) Curves Between Pulse Methods and Conventi...mentioning
confidence: 99%
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“…43) 4.4 V p -dependent dissipation curves Measuring V Ã cpd ðzÞ is important not only to obtain F ele but also to check the homogeneity of the tip-sample system. For example, Casimir force measurement is usually carried out by measuring the force between a large sphere and a metal plate, 4,[32][33][34] where the interaction areas of the two objects are large compared with those of the tip-sample system such as in our experiment. Under this condition, electrostatic contributions by the body part of the tip in our experiment are strongly enhanced, and thus, the existence of fractional patch potentials becomes a serious problem in the precise extraction of the Casimir force.…”
Section: Comparison Of A(z) Curves Between Pulse Methods and Conventi...mentioning
confidence: 99%
“…Under this condition, electrostatic contributions by the body part of the tip in our experiment are strongly enhanced, and thus, the existence of fractional patch potentials becomes a serious problem in the precise extraction of the Casimir force. 33,34) Therefore, the measurement requires the preparation of a clean surface and sphere and clarification of whether there are undesirable patch potentials. A clear V Ã cpd ðzÞ difference depending on the tip conditions [Figs.…”
Section: Comparison Of A(z) Curves Between Pulse Methods and Conventi...mentioning
confidence: 99%
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