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Coating with Anisotropic Electrical Conductivity

IP.com Disclosure Number: IPCOM000051608D
Original Publication Date: 1981-Feb-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Findlay, HT: AUTHOR

Abstract

A coating having a selectable anisotropic electrical conduction proper is achieved by dispersing conducting particles or cells in a compressable medium. When the coating is compressed, preferably in the direction of its thickness, the conducting particles are brought closer together in a localized area and an increase in conductivity results.

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Coating with Anisotropic Electrical Conductivity

A coating having a selectable anisotropic electrical conduction proper is achieved by dispersing conducting particles or cells in a compressable medium. When the coating is compressed, preferably in the direction of its thickness, the conducting particles are brought closer together in a localized area and an increase in conductivity results.

Referring to Fig. 1, a plurality of particles 10 which, for example, may be particles of conductive carbon, are dispersed in a medium 12, which may be polycarbonate, to form a coating 14 on a conducting substrate 16. To produce the coating mixture, a dispersion of conductive carbon in water may be emulsified with a solution of polycarbonate in methylene chloride.

As is indicated in Fig. 2, electrodes 16 pressing on the coating 14 locally bring particles 10' into a close relationship to establish a conducting path in the direction of coating thickness.

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