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Work function calibration of a non-contact voltage sensor

[Category : - ELECTRONICS]
[Viewed 1107 times]

A method and a system for calibrating the work function or surface potential of a non-contact voltage sensor probe tip are provided. The method includes preparing one or more reference sample surfaces and a reference non-contact voltage sensor probe tip to have stable surface potentials, measuring the voltage between the reference samples and the reference sensor probe tip, measuring the voltage between a point on a non-reference sample surface and the reference sensor probe tip, measuring the voltage between the same point on the non-reference sample surface and a non-reference non-contact voltage sensor probe tip, and determining a surface potential correction factor for the non-reference, non-contact voltage sensor.

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