Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2757131
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A percolative film with conductive acetylene black introduced into beta-polyvinylidene fluoride was prepared by dip-coating method. Percolation theory was employed to explain the dielectric behavior of polymer/conductor composite films. Experimental results showed that the dielectric constant of polymer/conductor composite films can reach 56 and the dielectric loss is below 0.15 when acetylene black concentration is in the neighborhood of percolation threshold (f(c)). The experimental results are in good agreement with classic percolation power law, with f(c)approximate to 1.3% and exponent q approximate to 0.53. Such composite films have a potential to become capacitors and can be easily fabricated due to its flexibility. (C) 2007 American Institute of Physics.
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