TY - JOUR
T1 - Monte Carlo simulation of string-like colloidal assembly
AU - Norizoe, Y.
AU - Kawakatsu, T.
N1 - Copyright:
Copyright 2005 Elsevier B.V., All rights reserved.
PY - 2005/11/15
Y1 - 2005/11/15
N2 - We study structural phase transition of polymer-grafted colloidal particles by Monte Carlo simulations on hard spherical particles. The interaction potential, which has a weak repulsive step outside the hard core, was validated with use of the self-consistent field calculations. With this potential, canonical Monte Carlo simulations have been carried out in two and three dimensions using the Metropolis algorithm. At low temperature and high density, we find that the particles start to self-assemble and finally align in strings. By analyzing the cluster size distribution and string length distribution, we construct a phase diagram and find that this string-like assembly is related to the percolation phenomena. The average string length diverges in the region where the melting transition line and the percolation transition line cross, which is similar to Ising spin systems where the percolation transition line and the order-disorder line meet on the critical point.
AB - We study structural phase transition of polymer-grafted colloidal particles by Monte Carlo simulations on hard spherical particles. The interaction potential, which has a weak repulsive step outside the hard core, was validated with use of the self-consistent field calculations. With this potential, canonical Monte Carlo simulations have been carried out in two and three dimensions using the Metropolis algorithm. At low temperature and high density, we find that the particles start to self-assemble and finally align in strings. By analyzing the cluster size distribution and string length distribution, we construct a phase diagram and find that this string-like assembly is related to the percolation phenomena. The average string length diverges in the region where the melting transition line and the percolation transition line cross, which is similar to Ising spin systems where the percolation transition line and the order-disorder line meet on the critical point.
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U2 - 10.1209/epl/i2005-10288-6
DO - 10.1209/epl/i2005-10288-6
M3 - Article
AN - SCOPUS:28244495524
VL - 72
SP - 583
EP - 589
JO - EPL
JF - EPL
SN - 0295-5075
IS - 4
ER -