The actual distribution of charges on a metal does not guarantee its surface to be equipotential because of the impurities and microcrystal structure of the material. This phenomenon, known as patch e↵ect, is responsible for the mutual force and torque between two metallic surfaces at a finite distance. Patch e↵ect is important for any precision measurement whose set-up includes conducting surfaces in a closed proximity to each other. This is particularly true for the Satellite Test of the Equivalence Principle experiment where the di↵erential motion of cylindrical test masses will be used to test the universality of free fall to an unprecedented accuracy of about 1 part in 1018.

Patch Effect in Cylindrical Geometry: The Step Accelerometer / Ferroni, Valerio; Silbergleit, Alexander. - In: INTERNATIONAL JOURNAL OF MODERN PHYSICS D. - ISSN 0218-2718. - 2012, 12:(2012), pp. 131-135. [10.1142/S2010194512006332]

Patch Effect in Cylindrical Geometry: The Step Accelerometer

Ferroni, Valerio;
2012-01-01

Abstract

The actual distribution of charges on a metal does not guarantee its surface to be equipotential because of the impurities and microcrystal structure of the material. This phenomenon, known as patch e↵ect, is responsible for the mutual force and torque between two metallic surfaces at a finite distance. Patch e↵ect is important for any precision measurement whose set-up includes conducting surfaces in a closed proximity to each other. This is particularly true for the Satellite Test of the Equivalence Principle experiment where the di↵erential motion of cylindrical test masses will be used to test the universality of free fall to an unprecedented accuracy of about 1 part in 1018.
2012
Ferroni, Valerio; Silbergleit, Alexander
Patch Effect in Cylindrical Geometry: The Step Accelerometer / Ferroni, Valerio; Silbergleit, Alexander. - In: INTERNATIONAL JOURNAL OF MODERN PHYSICS D. - ISSN 0218-2718. - 2012, 12:(2012), pp. 131-135. [10.1142/S2010194512006332]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/278932
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