title: Ring statistics of silica bilayers.
abstract: The recent synthesis and characterisation of bilayers of vitreous silica has produced valuable new information on ring sizes and distributions. In this paper, we compare the ring statistics of experimental samples with computer generated samples. The average ring size is fixed at six by topology, but the width, skewness and other moments of the distribution of ring edges are characteristics of particular samples. We examine the Aboav-Weaire law that quantifies the propensity of smaller rings to be adjacent to larger rings, and find similar results for available experimental samples which however differ somewhat from computer-generated bilayers. We introduce a new law for the areas of rings of various sizes.
authors.affiliation: Physics Department, Arizona State University, Tempe, AZ 85287, USA.
authors.forename: Avishek
authors.initials: A
authors.lastname: Kumar
authors.forename: David
authors.initials: D
authors.lastname: Sherrington
authors.forename: Mark
authors.initials: M
authors.lastname: Wilson
authors.forename: M F
authors.initials: MF
authors.lastname: Thorpe