Negative differential resistance in a flexible graphite silicone composite

S. Littlejohn, S. Crampin, A. Nogaret

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The need for flexible electronic devices that are compatible with biology is driving the search for novel materials. Here we report a composite of graphite nanoparticles incorporated into a silicone rubber matrix that exhibits a robust negative differential resistance (NDR) region. Through consideration of the lamellar structure of the nanoparticles and the formation of electric field domains within the sample, we show that the NDR originates from a semimetal to insulator transition of an embedded bilayer within the graphite nanoparticle. We employ the rubber's intrinsic flexibility to demonstrate how strain induced in the composite, through an axial deformation, modifies the NDR region. A strain of ε = 17.5% shifts the onset of the NDR by 30%.
Original languageEnglish
Title of host publicationTechnical Proceedings of the 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012
Pages165-168
Number of pages4
Publication statusPublished - 2012
EventNanotechnology 2012: Advanced Materials, CNTs, Particles, Films and Composites - 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012 - Santa Clara, CA, USA United States
Duration: 18 Jun 201221 Jun 2012

Conference

ConferenceNanotechnology 2012: Advanced Materials, CNTs, Particles, Films and Composites - 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012
CountryUSA United States
CitySanta Clara, CA
Period18/06/1221/06/12

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