NDLI: Surface conductivity in liquid-solid interface due to image force

Content Provider	IEEE Xplore Digital Library
Author	Korobeynikov, S.M. Drozhzhin, A.P. Furin, G.G. Charalambakos, V.P. Agoris, D.P.
Copyright Year	2002
Description	Author affiliation: Novosibirsk State Tech. Univ., Russia (Korobeynikov, S.M.; Drozhzhin, A.P.)
Abstract	The image force is considered to be one of the nonspecific sources of surface conductivity origin in the interface between a non-polar liquid dielectric and a polar solid one. Two possible physical mechanisms have been investigated. The first one takes into account the existence of a potential barrier to the charge movement as it leaves the surface. Therefore the charges that are in liquid are attracted to the surface. The second one is the reduction of dissociation energy of ion pairs close to the interface in comparison with bulk dissociation. Both mechanisms result in a decrease of recombination rate and in a sharp increase of dissociation rate. It has been shown that both these mechanisms could lead to creation and accumulation of an abnormal nonspecific surface charge carrier. Preliminary experimental results don't contradict theory. Surface conductivity of ceramics with /spl epsiv/=80 in contact with transformer oil (/spl epsiv/=2.3) is sharply increased in case of slight dissociating organic doping.
Sponsorship	IEEE - Dielectrics & Electr. Insulation Soc
Starting Page	270
Ending Page	273
File Size	270092
Page Count	4
File Format	PDF
ISBN	0780373502
DOI	10.1109/ICDL.2002.1022745
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-07-12
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Conductivity Dielectric liquids Solids Permittivity Charge carriers Oil insulation Electrodes Doping Polarization Chemistry
Content Type	Text
Resource Type	Article

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