Contact electrification studies using atomic force microscope techniques
نویسندگان
چکیده
Contact electrification measurements using atomic force microscopy techniques were performed using micrometer-sized spheres made of polystyrene and flat substrates of either freshly cleaved, highly oriented pyrolytic graphite ~HOPG! or a 0.2-mm-thick Au@111# film grown on mica. The polystyrene/HOPG interaction exhibited significant electrostatic charging when compared to the polystyrene/Au system. This result is consistent with qualitative expectations of contact charging based on a triboelectric series of common materials. The observed contact electrification is also consistent with electronic charge transfer between materials, rather than an ionic or material transfer mechanism. © 1998 American Institute of Physics. @S0021-8979~98!07911-0#
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