Measurements and Simulations of Surfactant's Impact on the Conductivity and the $\hbox{1}/f$ Noise in Percolation Carbon Nanotube Networks
作者： Gilbert Sassine , Frederic Martinez , Micheline El Khoury , Fabien Pascal , Alain Hoffmann
关键词: Conductivity 、 Nanotube 、 Nanotechnology 、 Conductance 、 Power law 、 Materials science 、 Condensed matter physics 、 Critical exponent 、 Monte Carlo method 、 Homogeneity (physics) 、 Carbon nanotube
摘要: In this paper, we present a study of 2-D carbon nanotube (CNT) thin films. Conductance and 1/f noise have been experimentally theoretically investigated. Experimentally, after fabrication characterization films, established that the percolation process is primary physical mechanism influencing conductance level in such it strongly depends on homogeneity structure. Theoretically, based CNT physics using Monte Carlo distribution, developed numerical model allowing us to simulate We assume sources are localized at nanotube-nanotube junctions. use modified nodal analysis describe our network provide dc characteristics. This can inhomogeneous structures good agreement with experimental results. Nevertheless, for high densities nanotubes, shown presence clusters affects leads conclusion critical exponent power law not invariant. By comparing simulations results, found assumptions origin generated by tube-tube junctions dominate total film despite clusters.
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