Departmental Papers (MSE)

Document Type

Journal Article

Date of this Version

September 2005

Comments

Copyright American Physical Society. Reprinted from Physical Review B, Volume 72, Issue 12, Article 121404, September 15, 2005, 4 pages.
Publisher URL: http://dx.doi.org/10.1103/PhysRevB.72.121404

Abstract

Percolation conductivity of a stick network depends on alignment as well as concentration. We show that both dependences exhibit critical (power-law) behavior, and study the alignment threshold in detail. The highest conductivity occurs for slightly aligned, rather than isotropic, sticks. Experiments on single wall carbon nanotube composites are supported by Monte Carlo simulations. These results should be broadly applicable to percolating networks of anisotropic conductors.

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Date Posted: 15 March 2006

This document has been peer reviewed.