title: Quasiuniversal connectedness percolation of polydisperse rod systems.
abstract: The connectedness percolation threshold (η(c)) and critical coordination number (Z(c)) of systems of penetrable spherocylinders characterized by a length polydispersity are studied by way of Monte Carlo simulations for several aspect ratio distributions. We find that (i) η(c) is a nearly universal function of the weight-averaged aspect ratio, with an approximate inverse dependence that extends to aspect ratios that are well below the slender rod limit and (ii) that percolation of impenetrable spherocylinders displays a similar quasiuniversal behavior. For systems with a sufficiently high degree of polydispersity, we find that Z(c) can become smaller than unity, in analogy with observations reported for generalized and complex networks.
authors: LPM, Ecole Polytechnique Fédérale de Lausanne, Station 17, CH-1015 Lausanne, Switzerland.
authors: Biagio
authors: B
authors: Nigro
authors: Claudio
authors: C
authors: Grimaldi
authors: Peter
authors: P
authors: Ryser
authors: Avik P
authors: AP
authors: Chatterjee
authors: Paul
authors: P
authors: van der Schoot