Volume 60, Number 4, November 2002
|Page(s)||636 - 642|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 November 2002|
Melting-freezing cycles in a relatively sheared pair of crystalline monolayers
Centre for Condensed Matter Theory, Department of Physics
Indian Institute of Science - Bangalore 560012, India
2 Materials Research Centre, IISc - Bangalore 560012, India
Accepted: 10 September 2002
The nonequilibrium dynamical behaviour that arises when two ordered two-dimensional monolayers of particles are sheared over each other is studied in Brownian dynamics simulations. A curious sequence of nonequilibrium states is observed as the driving rate is increased, the most striking of which is a sliding state with irregular alternation between disordered and ordered states. We comment on possible mechanisms underlying these cycles, and experiments that could observe them.
PACS: 82.70.Dd – Colloids / 62.20.Fe – Deformation and plasticity (including yield, ductility, and superplasticity) / 81.40.Pq – Friction, lubrication, and wear
© EDP Sciences, 2002
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