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

作者：Saito Kazuya^*; Hishida Mafumi; Yamamura Yasuhisa

来源：Soft Matter, 2015, 11(43): 8493-8498.

DOI：10.1039/c5sm02014j

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.

• 出版日期2015