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Issue 43, 2015
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A possible critical point for nematic order on the basis of Landau free energy having dual instabilities for nano-segregated smectic liquid crystals

Kazuya Saito,*a   Mafumi Hishidaa  and  Yasuhisa Yamamuraa  
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* Corresponding authors

a Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
E-mail: kazuya@chem.tsukuba.ac.jp
Fax: +81 29 853 6503
Tel: +81 29 853 4239

Abstract

Landau expansion of free energy assuming dual instabilities for the nano-segregated SmA phase is analyzed. In addition to known phase sequences (on cooling, disordered isotropic liquid → nematic phase → smectic phase, and disordered isotropic liquid → smectic phase), a new sequence (disordered isotropic liquid → density wave with subsidiary nematic order → smectic phase) and the existence of a critical point are demonstrated in the case where the instability for density wave formation occurs at a higher temperature.

Graphical abstract: A possible critical point for nematic order on the basis of Landau free energy having dual instabilities for nano-segregated smectic liquid crystals

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Article information

https://doi.org/10.1039/C5SM02014J
Submitted
12 Aug 2015
Accepted
21 Aug 2015
First published
27 Aug 2015
Soft Matter, 2015,11, 8493-8498
Article type
Paper
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A possible critical point for nematic order on the basis of Landau free energy having dual instabilities for nano-segregated smectic liquid crystals

K. Saito, M. Hishida and Y. Yamamura, Soft Matter, 2015, 11, 8493
DOI: 10.1039/C5SM02014J

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