Phase diagram of self-assembled rigid rods on two-dimensional lattices: theory and Monte Carlo simulations.
J Chem Phys
; 133(13): 134706, 2010 Oct 07.
Article
em En
| MEDLINE
| ID: mdl-20942554
ABSTRACT
Monte Carlo simulations and finite-size scaling analysis have been carried out to study the critical behavior in a two-dimensional system of particles with two bonding sites that, by decreasing temperature or increasing density, polymerize reversibly into chains with discrete orientational degrees of freedom and, at the same time, undergo a continuous isotropic-nematic (IN) transition. A complete phase diagram was obtained as a function of temperature and density. The numerical results were compared with mean field (MF) and real space renormalization group (RSRG) analytical predictions about the IN transformation. While the RSRG approach supports the continuous nature of the transition, the MF solution predicts a first-order transition line and a tricritical point, at variance with the simulation results.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Método de Monte Carlo
/
Transição de Fase
Tipo de estudo:
Health_economic_evaluation
Idioma:
En
Revista:
J Chem Phys
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Argentina