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Nanocomposite dielectrics—properties and implications

J K Nelson and Y Hu

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The incorporation of nanoparticles into thermosetting resins is seen to impart desirable dielectric properties when compared with conventional (micron-sized particulates) composites. Although the improvements are accompanied by the mitigation of internal charge in the materials, the nature of the interfacial region is shown to be pivotal in determining the dielectric behaviour. In particular, it is shown that the conditions and enhanced area of the interface changes the bonding that may give rise to an interaction zone, which affects the interfacial polarization through the formation of local conductivity.


PACS

77.84.Lf Composite materials

77.22.-d Dielectric properties of solids and liquids

78.30.Hv Other nonmetallic inorganics

Subjects

Condensed matter: electrical, magnetic and optical

Dates

Issue 2 (21 January 2005)

Received 29 June 2004, in final form 13 October 2004

Published 6 January 2005



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