Dynamics at the Nematic-Isotropic Phase Transition in Aerosil Dispersed Liquid Crystal

2005 ◽  
Vol 94 (24) ◽  
Author(s):  
F. Mercuri ◽  
S. Paoloni ◽  
U. Zammit ◽  
M. Marinelli
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Isotropic Phase

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)’.

scholarly journals Kinetics of Nematic to Isotropic Phase Transition in Liquid Crystal Doped with Magnetic Nanoparticles

2017 ◽  
Vol 131 (4) ◽  
pp. 949-951 ◽  
Author(s):  
K. Csach ◽  
A. Juríková ◽  
J. Miškuf ◽  
N. Tomašovičová ◽  
V. Gdovinová ◽  
...  
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Magnetic Nanoparticles ◽  
Isotropic Phase ◽  
Kinetics Of

Approach to a second-order nematic-isotropic phase transition in a lyotropic liquid crystal

1984 ◽  
Vol 29 (2) ◽  
pp. 1010-1012 ◽  
Author(s):  
Charles Rosenblatt ◽  
Satyendra Kumar ◽  
J. D. Litster
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Second Order ◽  
Lyotropic Liquid Crystal ◽  
Isotropic Phase

scholarly journals Pretransitional behavior above the nematic-isotropic phase transition of an auxetic trimer liquid crystal

1999 ◽  
Vol 60 (4) ◽  
pp. 4980-4982 ◽  
Author(s):  
Daeseung Kang ◽  
Milind P. Mahajan ◽  
Shiyong Zhang ◽  
Rolfe G. Petschek ◽  
Charles Rosenblatt ◽  
...  
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Isotropic Phase

Control of the Optical Band Structure of Liquid Crystal Infiltrated Inverse Opal by a Photoinduced Nematic−Isotropic Phase Transition

2002 ◽  
Vol 124 (37) ◽  
pp. 10950-10951 ◽  
Author(s):  
Shoichi Kubo ◽  
Zhong-Ze Gu ◽  
Kazuyuki Takahashi ◽  
Yoshihisa Ohko ◽  
Osamu Sato ◽  
...  
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Band Structure ◽  
Isotropic Phase ◽  
Inverse Opal ◽  
Structure Of Liquid
Sign in / Sign up

Export Citation Format

Share Document