2000
DOI: 10.1088/0022-3727/33/18/316
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Abstract: Impact electrification between an elastic sphere and a metal plate has been studied experimentally. To find out how charge transfers between the contact bodies, the voltage profiles at the impact are measured under various experimental conditions using a digital oscilloscope, and simultaneously the contact deformation of the sphere is visualized with a high-speed camera. The initial charge on the sphere and the transferred charge are obtained from the integrated voltage with respect to the elapsed time of the … Show more

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Cited by 148 publications
(89 citation statements)
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“…Thus, here we built a phenomenological model according to this proposed mechanism to fit our experimental result. Similar to the model for small particle charging, 26 the quantity of charges transferred each time is assumed to be proportional to the potential difference between the AFM probe and the SiO 2 surface. This potential difference consists of the work function difference between the two contacting materials V c as well as the image charge potential V e induced by existing charges on SiO 2 surface.…”
mentioning
confidence: 99%
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“…Thus, here we built a phenomenological model according to this proposed mechanism to fit our experimental result. Similar to the model for small particle charging, 26 the quantity of charges transferred each time is assumed to be proportional to the potential difference between the AFM probe and the SiO 2 surface. This potential difference consists of the work function difference between the two contacting materials V c as well as the image charge potential V e induced by existing charges on SiO 2 surface.…”
mentioning
confidence: 99%
“…V c is a fixed value that only depends on material property, and V e is proportional to the amount of existing charges. 26 Thus, the overall charge transfer in each cycle is described by eq 3…”
mentioning
confidence: 99%
“…Based on the condenser model [2,13,32], the CPD (V c =V i -V j ) is the driving force for electron transfer between contacting surfaces. In each collision, the transferred charge is proportional to the maximum contact area and the total potential difference:…”
Section: The Contact Electrification Modelmentioning
confidence: 99%
“…where S m is the maximum contact area during the collision, k s is the charging constant during contact electrification and is of the order of 10 -4 C·m -2 ·V -1 [32][33][34]. During a collision, the charge will be transferred from material i to material j.…”
Section: The Contact Electrification Modelmentioning
confidence: 99%
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