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

Soft Matter ◽  
2015 ◽  
Vol 11 (43) ◽  
pp. 8493-8498 ◽  
Author(s):  
Kazuya Saito ◽  
Mafumi Hishida ◽  
Yasuhisa Yamamura
Keyword(s):  
Free Energy ◽  
Liquid Crystals ◽  
Critical Point ◽  
Smectic Liquid Crystals ◽  
Nematic Order ◽  
Landau Free Energy

scholarly journals Fluctuations and phase transitions of uniaxial and biaxial liquid crystals using a theoretically informed Monte Carlo and a Landau free energy density

2019 ◽  
Vol 31 (17) ◽  
pp. 175101
Author(s):  
Stiven Villada-Gil ◽  
Viviana Palacio-Betancur ◽  
Julio C Armas-Pérez ◽  
Juan J de Pablo ◽  
Juan P Hernández-Ortiz
Keyword(s):  
Monte Carlo ◽  
Free Energy ◽  
Phase Transitions ◽  
Liquid Crystals ◽  
Energy Density ◽  
Free Energy Density ◽  
Landau Free Energy ◽  
Biaxial Liquid Crystals

New critical point in smectic liquid crystals

1988 ◽  
Vol 37 (6) ◽  
pp. 2197-2213 ◽  
Author(s):  
Youngah Park ◽  
T. C. Lubensky ◽  
P. Barois ◽  
J. Prost
Keyword(s):  
Liquid Crystals ◽  
Critical Point ◽  
Smectic Liquid Crystals

ISOBARIC PROCESSES CLOSE TO THE SPINODAL

2004 ◽  
Vol 13 (07) ◽  
pp. 1183-1187
Author(s):  
ANTONIO DELFINO ◽  
JOÃO B. Da SILVA ◽  
JORGE S. De Sá MARTINS ◽  
SUZANA MOSS De OLIVEIRA ◽  
CLAUDETTE E. CORDEIRO
Keyword(s):  
Free Energy ◽  
Critical Point ◽  
Barrier Height ◽  
Life Time ◽  
Metastable States ◽  
Spinodal Point ◽  
Landau Free Energy ◽  
Energy Expansion

We construct a generalized Landau free energy expansion around any spinodal point, for which the usual expansion around the critical point is a particular case. The decay of deeply quenched metastable states close to the spinodal through isobaric processes is analyzed and their mean life time is related to a barrier height, which we compute. The results are compared with those obtained through the use of the usual Landau free energy expansion around the critical point.

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