Percolation of two-dimensional multiwall carbon nanotube networks

Title
Percolation of two-dimensional multiwall carbon nanotube networks
Authors
Jin, Hyoung Joon
Keywords
percolation, multiwall, carbon nanotube
Issue Date
2009-09
Publisher
American Institute of Physics
Abstract
We highlight the significance of multiwall carbon nanotube (MWCNT) shape on the electrical percolation. For rodlike MWCNTs, percolation threshold depends on aspect ratio (L/d). For random coil-like MWCNTs, the percolation threshold does not depend on L/d but depends on the shape factor of MWCNTs represented by the ratio between static bending persistence length and diameter. Surface resistivities of various MWCNTs converge into single curve when we plot their dimensionless surface concentration versus surface resistivity. The surface resistivity of MWCNT films decrease with increasing temperature, particularly at low concentrations, indicating the films can be used as a negative temperature coefficient thermistor.
URI
http://dspace.inha.ac.kr/handle/10505/1508
ISSN
0003-6951
Appears in Collections:
College of Engineering(공과대학) > Polymer Science and Engineering (고분자공학) > Journal Papers, Reports(고분자공학 논문, 보고서)
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