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Multiple timescale contact charging
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DOI：10.1103/PhysRevMaterials.2.125003.png)
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Abstract
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Contact charging between insulators is one of the most basic, yet least well understood, of physical processes. For example we have no clear theory for how insulators recruit enough charge carriers to deposit charge but not enough to discharge. In this paper we note that charging and discharging kinetics may be distinct, and from this observation we develop a mathematical model. The model surprisingly predicts that charging can decrease as contact frequency increases: We confirm this prediction experimentally and propose future steps.
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