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Updated: Mar 11, 2026

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Published on: October 31, 2019
Isotropic-nematic transition and cholesteric phases of helical Yukawa rods
1Theory of Soft Condensed Matter, Physics and Materials Science Research Unit, Université du Luxembourg, L-1511 Luxembourg, Luxembourg.
Abstract:
We present a Monte Carlo simulation study of helical Yukawa rods as a model for chiral liquid crystal mesogens. To simulate the cholesteric phase, we introduce a new simulation method that uses soft walls and self-determined boundary conditions. We observe that the isotropic-nematic phase transition is shifted to lower volume fractions with decreasing salt concentration as well as with increasing internal pitch of the rods. For particular sets of interaction parameters, the sense of the cholesteric pitch inverts, i.e., depending on concentration, mesogens of a given handedness can produce cholesteric phases of both chiral senses.
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