Title

A Hybrid Monte Carlo Approach to Molecular Aggregation in a Porous Medium

Document Type

Article

Publication Date

11-1-2000

Department

Physics and Astronomy

Abstract

A Monte Carlo simulation is used to study the segregation of liquid crystal molecules (short chains) in a heterogeneous matrix (of barrier concentration p(b)) in an ordering field (E). Aggregation of molecules, pinned by the matrix barriers, is enhanced at loser temperature (T) and higher barrier concentrations via clusters of clustering growth. Variation of the radial distribution function with T and pbi rms displacement of molecules, and visual analysis;is of their distribution reveal that the size of the molecular aggregates is relatively larger and less dispersed at higher p(b)(= 0.1) than that at a lon;er p(b)(= 0.01) at T = 0.2. The orientational molecular ordering is found to be lower at low temperature at higher p(b). Molecules remain segregated at higher temperatures unless the porosity is reduced and the ordering field is increased considerably.

Publication Title

European Physical Journal E

Volume

3

Issue

3

First Page

221

Last Page

225