Offsets in Electrostatically Determined Distances: Implications for Casimir Force Measurements

TL;DR

This paper investigates how imperfect electrostatic shielding at surfaces causes measurement offsets in surface distance determinations, affecting precision in Casimir force experiments.

Contribution

It reveals that surface shielding imperfections introduce measurable offsets in electrostatic distance measurements, even in good conductors, impacting Casimir force research.

Findings

Offset exists due to imperfect shielding

Effect is reduced but present in metals

Impacts accuracy of force measurements

Abstract

The imperfect termination of static electric fields at semiconducting surfaces has been long known in solid state and transistor physics. We show that the imperfect shielding leads to an offset in the distance between two surfaces as determined by electrostatic force measurements. The effect exists even in the case of good conductors (metals) albeit much reduced.