Critical behavior of optical birefringence at the nematic–smectic A phase transition in a binary liquid crystal system

2014 ◽  
Vol 199 ◽  
pp. 415-418 ◽  
Author(s):  
Sudipta Kumar Sarkar ◽  
Malay Kumar Das
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Critical Behavior ◽  
Optical Birefringence ◽  
Crystal System ◽  
Binary Liquid ◽  
Smectic A ◽  
Liquid Crystal System ◽  
Smectic A Phase

X-Ray Diffraction Study on the Reentrant Smectic A Phase in a Binary Liquid Crystal System

1987 ◽  
Vol 149 (1) ◽  
pp. 49-60 ◽  
Author(s):  
Hirofumi Sakashita ◽  
Shigeki Komori ◽  
Kazuya Kazuya Kamon ◽  
Hikaru Terauchi ◽  
Yo Shimizu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystal System ◽  
Binary Liquid ◽  
Smectic A ◽  
Liquid Crystal System ◽  
Smectic A Phase

scholarly journals Optical Microscopy Observations and Construction of Dupin Cyclides at the Isotropic/Smectic A Phase Transition

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4539
Author(s):  
Mikhael Halaby Macary ◽  
Gauthier Damême ◽  
Antoine Gibek ◽  
Valentin Dubuffet ◽  
Benoît Dupuy ◽  
...  
Keyword(s):  
Phase Transition ◽  
Numerical Simulation ◽  
Liquid Crystal ◽  
Optical Microscopy ◽  
Smectic A ◽  
Polarized Microscopy ◽  
Smectic A Phase ◽  
Dupin Cyclides

In this work, we are interested in the nucleation of bâtonnets at the Isotropic/Smectic A phase transition of 10CB liquid crystal. Very often, these bâtonnets are decorated with a large number of focal conics. We present here an example of a bâtonnet obtained by optical crossed polarized microscopy in a frequently observed particular area of the sample. This bâtonnet presents bulges and one of them consists of a tessellation of ellipses. These ellipses are two by two tangent, one to each other, and their confocal hyperbolas merge at the apex of the bâtonnet. We propose a numerical simulation with Python software to reproduce this tiling of ellipses as well as the shape of the smectic layers taking the well-known shape of Dupin cyclides within this particular bâtonnet area.

ANISOTROPY OF THE NEMATIC-SMECTIC A PHASE TRANSITION

1995 ◽  
Vol 09 (18n19) ◽  
pp. 2139-2155 ◽  
Author(s):  
BARBARA S. ANDERECK
Keyword(s):  
Phase Transition ◽  
Critical Behavior ◽  
Nematic Phase ◽  
Theoretical Work ◽  
Review Article ◽  
Superconducting Transition ◽  
Work Related ◽  
Smectic A ◽  
Smectic A Phase ◽  
Degree Of Anisotropy

Critical behavior at the transition from the nematic phase to the smectic A phase in liquid crystals has been of interest for over two decades. Discussions about the nature of the transition, its analogy to the superconducting transition, and the degree of anisotropy present in the critical exponents have been extensive during this time. This review article concentrates on the question of anisotropy at the nematic-smectic A transition. The experimental and theoretical work related to this question is summarized and compared. While progress has been made, there are many interesting questions related to this transition that remain for investigators to answer.

Liquid crystal gelators with photo-responsive and AIE properties

2018 ◽  
Vol 2 (12) ◽  
pp. 2245-2253 ◽  
Author(s):  
Xia Yu ◽  
Hui Chen ◽  
Xiang Shi ◽  
Pierre-Antoine Albouy ◽  
Jia Guo ◽  
...  
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Isotropic Phase ◽  
Aggregation Induced Emission ◽  
Smectic A ◽  
Smectic A Phase

trans-Cn-Chol present smectic A phase and photo-responsive SmA–isotropic phase transition, and their organogels exhibit aggregation-induced emission and photo-responsive gel–sol transition.

Isotropic to smectic-A phase transition in taper-shaped liquid crystal

2021 ◽  
Vol 329 ◽  
pp. 115539
Author(s):  
Bhaskar Chandra Khan ◽  
Prabir K. Mukherjee
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Smectic A ◽  
Smectic A Phase
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