dc.contributor.author | White, Sadie I | |
dc.contributor.author | Mutiso, Rose M | |
dc.contributor.author | Vora, Patrick M | |
dc.contributor.author | Jahnke, David | |
dc.contributor.author | Hsu, Sam | |
dc.contributor.author | Kikkawa, James M | |
dc.contributor.author | Fischer, John E | |
dc.contributor.author | Winey, Karen I | |
dc.date.accessioned | 2013-06-17T15:10:22Z | |
dc.date.available | 2013-06-17T15:10:22Z | |
dc.date.issued | 2010 | |
dc.identifier.citation | Volume 20, Issue 16, pages 2709–2716, August 23, 2010 | en |
dc.identifier.uri | http://onlinelibrary.wiley.com/doi/10.1002/adfm.201000451/abstract;jsessionid=530311E7B250425AD4CA4FBB7D3EB4E8.d03t03?deniedAccessCustomisedMessage=&userIsAuthenticated=false | |
dc.identifier.uri | http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/35134 | |
dc.description.abstract | The design and preparation of isotropic silver nanowire-polystyrene composites is described, in which the nanowires have finite L/D (< 35) and narrow L/D distribution. These model composites allow the L/D dependence of the electrical percolation threshold, ϕc, to be isolated for finite-L/D particles. Experimental ϕc values decrease with increasing L/D, as predicted qualitatively by analytical percolation models. However, quantitative agreement between experimental data and both soft-core and core–shell analytical models is not achieved, because both models are strictly accurate only in the infinite-L/D limit. To address this analytical limitation, a soft-core simulation method to calculate ϕc and network conductivity for cylinders with finite L/D are developed. Our simulated ϕc results agree strongly with our experimental data, suggesting i) that the infinite-aspect-ratio assumption cannot safely be made for experimental networks of particles with L/D < 35 and ii) in predicting ϕc, the soft-core model makes a less significant assumption than the infinite-L/D models do. The demonstrated capability of the simulations to predict ϕc in the finite-L/D regime will allow researchers to optimize the electrical properties of polymer nanocomposites of finite-L/D particles. | en |
dc.language.iso | en | en |
dc.title | Electrical Percolation Behavior in Silver Nanowire–Polystyrene Composites: Simulation and Experiment | en |
dc.type | Article | en |
local.publisher | College of Physical and Biological Sciences | en |