High dielectric permittivity and low percolation threshold in polymer composites based on SiC-carbon nanotubes micro/nano hybrid

Vertically aligned carbon nanotubes (CNTs) were synthesized on SiC microplates. Resultant SiC-CNTs hybrids were further incorporated into poly(vinylidene fluoride) (PVDF) as conductive filler to prepare percolative composites. They exhibited a much low percolation threshold (1.47 vol%), but the diel...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2011-01, Vol.98 (3), p.032901-032901-3
Main Authors: Yuan, Jin-Kai, Li, Wei-Long, Yao, Sheng-Hong, Lin, You-Qin, Sylvestre, Alain, Bai, Jinbo
Format: Article
Language:English
Subjects:
Engineering Sciences
Micro and nanotechnologies
Microelectronics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Vertically aligned carbon nanotubes (CNTs) were synthesized on SiC microplates. Resultant SiC-CNTs hybrids were further incorporated into poly(vinylidene fluoride) (PVDF) as conductive filler to prepare percolative composites. They exhibited a much low percolation threshold (1.47 vol%), but the dielectric permittivity was enhanced significantly. The largest dielectric permittivity of 8700 was observed in the SiC-CNTs/PVDF composites with 2.3 vol% CNTs at 100 Hz. A microcapacitor model was proposed to explain the obtained results based on the special geometry of the hybrid SiC-CNTs filler.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3544942