Structural relaxation of a gel modeled by three body interactions

Saw, Shibu ; Ellegaard, Niels L. ; Kob, Walter ; Sastry, Srikanth (2009) Structural relaxation of a gel modeled by three body interactions Physical Review Letters, 103 (24). 248305_1-248305_4. ISSN 0031-9007

Full text not available from this repository.

Official URL: http://prl.aps.org/abstract/PRL/v103/i24/e248305

Related URL: http://dx.doi.org/10.1103/PhysRevLett.103.248305

Abstract

We report a molecular dynamics simulation study of a model gel whose interaction potential is obtained by modifying the three body Stillinger-Weber model potential for silicon. The modification reduces the average coordination number and suppresses the liquid-gas phase coexistence curve. The low density, low temperature equilibrium gel that can thus form exhibits interesting dynamical behavior, including compressed exponential relaxation of density correlations. We show that motion responsible for such relaxation has ballistic character, and arises from the motion of chain segments in the gel without the restructuring of the gel network.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:50136
Deposited On:21 Jul 2011 14:29
Last Modified:21 Jul 2011 14:29

Repository Staff Only: item control page