Quasiuniversal connectedness percolation of polydisperse rod systems.

نویسندگان

  • Biagio Nigro
  • Claudio Grimaldi
  • Peter Ryser
  • Avik P Chatterjee
  • Paul van der Schoot
چکیده

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.

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عنوان ژورنال:
  • Physical review letters

دوره 110 1  شماره 

صفحات  -

تاریخ انتشار 2013