Scaling of dynamics with the range of interaction in short-range attractive colloids

We numerically study the dependence of the dynamics on the range of interaction Δ for the short-range square well potential. We find that, for small Δ, dynamics scale exactly in the same way as thermodynamics, both for Newtonian and Brownian microscopic dynamics. For interaction ranges from a few percent down to the Baxter limit, the relative location of the attractive-glass line and the liquid-gas line does not depend on Δ. This proves that, in this class of potentials, disordered arrested states (gels) can be generated only as a result of a kinetically arrested phase separation. © 2005 The American Physical Society.

Published in:
Physical Review Letters, 94, 7, null
00319007 10797114
Other identifiers:
Scopus: 2-s2.0-18244378526
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Scopus: 2-s2.0-18244378526

 Record created 2010-01-27, last modified 2018-03-17

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