Anomalies of the specific heat in the vicinity of the phase transition from isotropic liquid to nematic liquid crystal

1980 ◽  
Vol 39 (6) ◽  
pp. 1385-1390 ◽  
Author(s):  
M. A. Anisimov ◽  
V. M. Mamnitskii ◽  
E. L. Sorkin
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Specific Heat ◽  
Nematic Liquid Crystal ◽  
Isotropic Liquid

CRITICAL REGION AT THE NEMATIC-ISOTROPIC PHASE TRANSITION

1996 ◽  
Vol 10 (16) ◽  
pp. 771-775 ◽  
Author(s):  
PRABIR K. MUKHERJEE
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Critical Point ◽  
Nematic Liquid Crystal ◽  
Critical Region ◽  
Isotropic Phase ◽  
Transition Line ◽  
Isotropic Liquid ◽  
Phase Transition Line ◽  
First Order

The phase transition from isotropic liquid to nematic liquid crystal is a weak first order one. The present paper investigate the possibility of the critical region near the isolated critical point at the first order nematic-isotropic phase transition line.

scholarly journals Dissipative structures induced by photoisomerization in a dye-doped nematic liquid crystal layer

2018 ◽  
Vol 376 (2135) ◽  
pp. 20170382 ◽  
Author(s):  
I. Andrade-Silva ◽  
U. Bortolozzo ◽  
C. Castillo-Pinto ◽  
M. G. Clerc ◽  
G. González-Cortés ◽  
...  
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Dissipative Structures ◽  
Input Power ◽  
Isotropic Phase ◽  
Crystal Layer ◽  
Liquid Crystal Layer ◽  
Nematic Liquid Crystal Layer ◽  
Interface Propagation

Order–disorder phase transitions driven by temperature or light in soft matter materials exhibit complex dissipative structures. Here, we investigate the spatio-temporal phenomena induced by light in a dye-doped nematic liquid crystal layer. Experimentally, for planar anchoring of the nematic layer and high enough input power, photoisomerization processes induce a nematic–isotropic phase transition mediated by interface propagation between the two phases. In the case of a twisted nematic layer and for intermediate input power, the light induces a spatially modulated phase, which exhibits stripe patterns. The pattern originates as an instability mediated by interface propagation between the modulated and the homogeneous nematic states. Theoretically, the phase transition, emergence of stripe patterns and front dynamics are described on the basis of a proposed model for the dopant concentration coupled with the nematic order parameter. Numerical simulations show quite a fair agreement with the experimental observations. This article is part of the theme issue ‘Dissipative structures in matter out of equilibrium: from chemistry, photonics and biology (part 2)’.

Phase Transition and Abnormal Behavior of a Nematic Liquid Crystal in Benzene

2009 ◽  
Vol 113 (32) ◽  
pp. 11109-11114 ◽  
Author(s):  
Shyamal Kumar Kundu ◽  
Shun Okudaira ◽  
Masanori Kosuge ◽  
Naoki Shinyashiki ◽  
Shin Yagihara
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Abnormal Behavior

scholarly journals Correction: Miscibility studies of two twist-bend nematic liquid crystal dimers with different average molecular curvatures. A comparison between experimental data and predictions of a Landau mean-field theory for the NTB–N phase transition

2016 ◽  
Vol 18 (9) ◽  
pp. 6955-6955 ◽  
Author(s):  
D. O. López ◽  
B. Robles-Hernández ◽  
J. Salud ◽  
M. R. de la Fuente ◽  
N. Sebastián ◽  
...  
Keyword(s):  
Field Theory ◽  
Experimental Data ◽  
Phase Transition ◽  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Mean Field Theory ◽  
Mean Field ◽  
Chem Phys ◽  
Phys Chem Chem Phys ◽  
Miscibility Studies

Correction for ‘Miscibility studies of two twist-bend nematic liquid crystal dimers with different average molecular curvatures. A comparison between experimental data and predictions of a Landau mean-field theory for the NTB–N phase transition’ by D. O. López et al., Phys. Chem. Chem. Phys., 2016, 18, 4394–4404.

Sign in / Sign up

Export Citation Format

Share Document