Heat-capacity anomalies from four-layer liquid-crystal films: experimental results and simulation results

Huang, C. C. ; Jiang, I. M. ; Jin, A. J. ; Stoebe, T. ; Geer, R. ; Dasgupta, C. (1993) Heat-capacity anomalies from four-layer liquid-crystal films: experimental results and simulation results Physical Review E - Statistical, Nonlinear and Soft Matter Physics, 47 (4). pp. 2938-2941. ISSN 1539-3755

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Official URL: http://pre.aps.org/abstract/PRE/v47/i4/p2938_1

Related URL: http://dx.doi.org/10.1103/PhysRevE.47.2938

Abstract

Our recent heat-capacity measurements on four-layer free-standing liquid-crystal films near the smectic-A-hexatic-B transition of n-heptyl-4'-n-pentyloxybiphenyl-4-carboxylate (75OBC) exhibit separate heat-capacity anomalies associated with the distinct ordering of the interior and surface layers. Employing the Metropolis Monte Carlo technique, we have simulated these transitions in a layered system with finite thickness (for example, 30×30×4). Comparison between our experimental and simulation results indicates that the anisotropy between inter- and intralayer interactions plays an important role in our experimental findings. Furthermore, the ratio of intra- to interlayer interactions strength should be more than 100.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:83245
Deposited On:17 Feb 2012 04:09
Last Modified:17 Feb 2012 04:09

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