Simulations and generalized model of the effect of filler size dispersity on electrical percolation in rod networks
Author(s)
Mutiso, Rose M.; Sherrott, Michelle C.; Li, Ju; Winey, Karen I.
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We present a three-dimensional simulation of electrical conductivity in isotropic, polydisperse rod networks from which we determine the percolation threshold (ϕ[subscript c]). Existing analytical models that account for size dispersity are formulated in the slender-rod limit and are less accurate for predicting ϕ[subscript c] in composites with rods of modest L/D. Using empirical approximations from our simulation data, we generalized the excluded volume percolation model to account for both finite L/D and size dispersity, providing a solution for ϕ[subscript c] of polydisperse rod networks that is quantitatively accurate across the entire L/D range.
Date issued
2012-12Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Department of Nuclear Science and EngineeringJournal
Physical Review B
Publisher
American Physical Society
Citation
Mutiso, Rose M., Michelle C. Sherrott, Ju Li, and Karen I. Winey. “Simulations and Generalized Model of the Effect of Filler Size Dispersity on Electrical Percolation in Rod Networks.” Phys. Rev. B 86, no. 21 (December 2012). © 2012 American Physical Society
Version: Final published version
ISSN
1098-0121
1550-235X