Experimental procedures associated with the electrostatic calibration of a microelectromechanical torsional oscillator are reported. These calibrations are required for the precision measurements of the Casimir force between a Au-coated sapphire sphere and a Au-coated polysilicon plate. It is shown that the electrostatic force between the surfaces is made zero by the application of a potential difference Vo between the sphere and the plate. V o is found to be independent of position and separation within the experimental error.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Astronomy and Astrophysics