Electrostatic force detector with cantilever for an electrostatic force microscope
US6507197B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1998 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Oct 30, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/864
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrostatic force microscope wherein electrostatic force applied to the detector is determined through obtaining the field distribution on several different shaped detectors with the calculation of the voltage distribution near the detector with the Finite Element Method to direct the measurement of the absolute charge amount on surface under test so that one can define the differences between the analysis and the results from the parallel plate model. Of interest is how large the error in the charge detection occurs in conjunction with thickness change of dielectric materials to be tested. There is provided a detector with cantilever which has proper shape for the spatial resolution of 10&mgr; made out of nickel foil for an electrostatic force microscope and the electrostatic force which appeared on it has been calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.