Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 112, Issue 3, Pages 1560-1564Publisher
AMER INST PHYSICS
DOI: 10.1063/1.480703
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The helical twisting power beta(M) determines the pitch of the chiral nematic phase produced when a nematic liquid crystal is doped with a low concentration of chiral solute molecules. Molecules with large beta(M) values have potential applications in electro-optic displays and in optical data storage. This paper describes a new simulation technique which allows the prediction of both the sign and magnitude of beta(M). The method employs Monte Carlo simulations of a fully atomistic model of a chiral dopant in the presence of a twisted nematic solvent composed of Gay-Berne particles. Calculations are presented for five different chiral dopants, with results that are in good agreement with existing experimental data. (C) 2000 American Institute of Physics. [S0021-9606(00)50903-9].
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