Theoretical study of the anomalous surface tension properties of liquid crystals

Martínez-Ratón, Y., Velasco, E., Somoza, A.M., Mederos, L. and Sluckin, T.J. (1998) Theoretical study of the anomalous surface tension properties of liquid crystals. Journal of Chemical Physics, 108, (6), 2583-2593. (doi:10.1063/1.475643).


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We study the surface properties of a molecular model of a liquid crystal using a density functional theory. The intermolecular interaction includes a Maier-Saupe term as well as terms which break the orientational symmetry at the interface. These latter contributions prove to play an essential role in the explanation of some of the anomalous surface-tension features observed in experimental systems. In particular, a dramatic surface tension maximum above the clearing point TNI is seen to be associated with increased nematic order close to the nematic-vapor interface. In addition, further reduction of the surface tension with decreasing temperature below TNI is observed to be related either with rapidly increasing surface-enhanced order, in which case there is a surface tension minimum, or with growing surface smectic order above the nematic-smectic transition temperature.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1063/1.475643
Related URLs:
Subjects: Q Science > QD Chemistry
Q Science > QC Physics
Divisions : University Structure - Pre August 2011 > School of Mathematics > Applied Mathematics
ePrint ID: 29572
Accepted Date and Publication Date:
Date Deposited: 14 Mar 2007
Last Modified: 31 Mar 2016 11:55

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