Confirmation of anomalous dynamical arrest in attractive colloids: A molecular dynamics study

Previous theoretical simulation and experimental studies have indicated that particles with a short-ranged attraction exhibit a range of dynamical arrest phenomena. These include very pronounced reentrance in the dynamical arrest curve, a logarithmic singularity in the density correlation functions, and the existence of "attractive" and "repulsive" glasses. Here we carry out extensive molecular dynamics calculations on dense systems interacting via a square-well potential. This is one of the simplest systems with the required properties, and may be regarded as canonical for interpreting the phase diagram, and now also the dynamical arrest. We confirm the theoretical predictions for reentrance, logarithmic singularity, and give a direct evidence of the existence, independent of theory, of two distinct glasses. We now regard the previous predictions of these phenomena as having been established. © 2002 The American Physical Society.


Published in:
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 66, 4, 041402/1-041402/14
Year:
2002
ISSN:
15393755 15502376
Other identifiers:
Scopus: 2-s2.0-41349103382
Scopus: 2-s2.0-41349103382
Laboratories:




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


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)