Fig. 1.

Schemes of the size effect of secondary particulate fillers on the electrical conductivity of fiber/polymer composites. a A conducting fiber composite having secondary particulate. b The distribution of spherical secondary fillers on polymer matrix. c The corresponding Swiss cheese having pores (spherical secondary fillers) with Voronoi geometry (having pipe line network that all possible configuration of conducting path). d The distribution of conducting fibers obtained by removing secondary fillers. e The degree and formation of electrical network by local conductance. f The combination of the fiber random network and Voronoi tessellation that corresponds to effecting conducting network