Extreme enhancement and reduction of the dielectric response of polymer nanoparticulate composites via interphasial charges

Oscar Lopez-Pamies, Taha Goudarzi, Amira B. Meddeb, Zoubeida Ounaies

Research output: Contribution to journalArticle

Abstract

An analytical solution is constructed for the homogenized (i.e., macroscopic) dielectric response of particulate composites comprising a random distribution of particles bonded to a matrix material through interphases of finite size that contain space charges. By accounting for interphasial charges, the solution is able to describe and explain both the extreme enhancement and the reduction of the dielectric response typically exhibited by emerging polymer nanoparticulate composites. More generally, the solution reveals that judicious manipulation of interphasial charges provides a promising path forward for the design of materials with exceptional dielectric properties.

Original languageEnglish (US)
Article number242904
JournalApplied Physics Letters
Volume104
Issue number24
DOIs
StatePublished - Jun 16 2014

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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