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17 Jan 2011

Volume 98, Issue 3, Articles (03xxxx)

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Appl. Phys. Lett. 98, 031101 (2011); http://dx.doi.org/10.1063/1.3529469 (3 pages)

Sinan Balci, Askin Kocabas, Coskun Kocabas, and Atilla Aydinli
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High dielectric permittivity and low percolation threshold in polymer composites based on SiC-carbon nanotubes micro/nano hybrid

Jin-Kai Yuan, Wei-Long Li, Sheng-Hong Yao, You-Qin Lin, Alain Sylvestre, and Jinbo Bai

Appl. Phys. Lett. 98, 032901 (2011); http://dx.doi.org/10.1063/1.3544942 (3 pages) | Cited 2 times

Online Publication Date: 21 January 2011

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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.
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81.07.Pr Organic-inorganic hybrid nanostructures
77.22.Ch Permittivity (dielectric function)
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