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Contact electrification of semiconductors
British Journal of Applied Physics, 1960Recently published experimental findings on the electrification of rutile powder by sliding down a metal chute can be explained by an extension of the present author's theory of the separation electrification of metals. The mechanism of the electrification of insulators must, in most cases, be quite different.
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Electrons on dielectrics and contact electrification
Chemical Physics Letters, 2009Surfaces of dielectrics (insulators) often become charged following contact with metals, semiconductors, and dielectrics with or without rubbing. The mechanism and participants in the charge transfer (electrons or ions), although widely investigated, are still controversial.
Chong-yang Liu, Allen J. Bard
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Theory of contact electrification
British Journal of Applied Physics, 1953After an outline of the relevant parts of the modern theory of solids, the transfer of electrons when metals, semiconductors and insulators are placed in contact is discussed. The importance of surface states is stressed.
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Contact electrification and surface composition
Journal of Physics D: Applied Physics, 1995We have studied the charge transfer to polypropylene films containing varying concentrations of amide (donor) and fluorine (acceptor) groups grafted onto the polymer backbone. Pure polypropylene charges very weakly but the addition of amide causes the charging to become strongly positive, and fluorine causes it to become strongly negative.
W J Brennan +3 more
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Contact electrification of polymers by metals
Journal of Electrostatics, 1985Abstract We describe a microcomputer-controlled apparatus for studying the contact electrification of polymers by metals. We report a detailed investigation of two polymers, Nylon and Polytetrafluoroethylene (PTFE) from opposite ends of the triboelectric series.
A.R. Akande, J. Lowell
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Ion transfer in contact electrification
SPIE Proceedings, 1990The contact charge on polymers is influenced by added organic salts, and the charge is higher when the additive is polymer-bound rather than molecular.'7 In our studies, the presence of an ionomer consisting of a polystyrene random copolymer with pendent N-methylpyridinium toluenesulfonate groups in the host resin produces a positive charge, and the ...
Arthur F. Diaz +3 more
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Gas breakdown in contact electrification
Journal of Physics D: Applied Physics, 1992Electrification of various materials (silicon, epoxy resin and coal) by repeated contact with a metal plate has been investigated. The authors observed gas breakdown in a nitrogen atmosphere upon separation of the contact partners. The total amount of charge acquired by the surfaces on contact is reduced at higher gas pressures.
B A Kwetkus, K Sattler, H -C Siegmann
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Ice‐crystal contact electrification
Quarterly Journal of the Royal Meteorological Society, 1960AbstractAn experimental investigation of electrification accompanying the momentary single contact of vapourgrown ice crystals at the same or at different temperatures suggests than any such effect is much smaller than might be expected from Reynolds's report on charging observed with riming spheres and vapour‐grown ice crystals.
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A new technique in contact electrification
Journal of Physics E: Scientific Instruments, 1979A new type of instrument to study contact-charging phenomena is described. The two functions of any contact-charging apparatus, namely touching two materials together, separating them and then measuring the transferred charge, are performed by a single element, a flexing cantilever, bonded to a piezoelectric strip.
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