Jump to main content
Jump to site search

Issue 39, 2016
Previous Article Next Article

Effective medium theory for the conductivity of disordered metallic nanowire networks

Author affiliations

Abstract

Motivated by numerous technological applications, there is current interest in the study of the conductive properties of networks made of randomly dispersed nanowires. The sheet resistance of such networks is normally calculated by numerically evaluating the conductance of a system of resistors but due to disorder and with so many variables to account for, calculations of this type are computationally demanding and may lack mathematical transparency. Here we establish the equivalence between the sheet resistance of disordered networks and that of a regular ordered network. Rather than through a fitting scheme, we provide a recipe to find the effective medium network that captures how the resistance of a nanowire network depends on several different parameters such as wire density, electrode size and electrode separation. Furthermore, the effective medium approach provides a simple way to distinguish the sheet resistance contribution of the junctions from that of the nanowires themselves. The contrast between these two contributions determines the potential to optimize the network performance for a particular application.

Graphical abstract: Effective medium theory for the conductivity of disordered metallic nanowire networks

Back to tab navigation

Publication details

The article was received on 26 Jul 2016, accepted on 20 Sep 2016 and first published on 21 Sep 2016


Article type: Paper
DOI: 10.1039/C6CP05187A
Phys. Chem. Chem. Phys., 2016,18, 27564-27571

  •   Request permissions

    Effective medium theory for the conductivity of disordered metallic nanowire networks

    C. O'Callaghan, C. Gomes da Rocha, H. G. Manning, J. J. Boland and M. S. Ferreira, Phys. Chem. Chem. Phys., 2016, 18, 27564
    DOI: 10.1039/C6CP05187A

Search articles by author

Spotlight

Advertisements