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 Delta for the short-range square well potential. We find that, for small Delta, dynamics scale exactly in the same way as thermodynamics, both for Newtonian and Brownian microscopic dynamics. For interaction ranges from...
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Veröffentlicht in: | Physical review letters 2005-02, Vol.94 (7), p.078301.1-078301.4, Article 078301 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We numerically study the dependence of the dynamics on the range of interaction Delta for the short-range square well potential. We find that, for small Delta, 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 Delta. 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. |
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ISSN: | 0031-9007 1079-7114 |
DOI: | 10.1103/PhysRevLett.94.078301 |