The nematic-isotropic phase transition in semiflexible fused hard-sphere chain fluids

2001 ◽  
Vol 114 (7) ◽  
pp. 3314-3324 ◽  
Author(s):  
K. M. Jaffer ◽  
S. B. Opps ◽  
D. E. Sullivan ◽  
B. G. Nickel ◽  
L. Mederos
Keyword(s):  
Phase Transition ◽  
Hard Sphere ◽  
Isotropic Phase ◽  
Chain Fluids

scholarly journals The nematic–isotropic phase transition in linear fused hard-sphere chain fluids

1999 ◽  
Vol 110 (23) ◽  
pp. 11630-11642 ◽  
Author(s):  
K. M. Jaffer ◽  
S. B. Opps ◽  
D. E. Sullivan
Keyword(s):  
Phase Transition ◽  
Hard Sphere ◽  
Isotropic Phase ◽  
Chain Fluids

An equation of state for the isotropic phase of linear, partially flexible and fully flexible tangent hard-sphere chain fluids

2013 ◽  
Vol 112 (7) ◽  
pp. 919-928 ◽  
Author(s):  
Thijs van Westen ◽  
Bernardo Oyarzún ◽  
Thijs J.H. Vlugt ◽  
Joachim Gross
Keyword(s):  
Equation Of State ◽  
Hard Sphere ◽  
Isotropic Phase ◽  
Chain Fluids

scholarly journals The isotropic-nematic phase transition of tangent hard-sphere chain fluids—Pure components

2013 ◽  
Vol 139 (3) ◽  
pp. 034505 ◽  
Author(s):  
Thijs van Westen ◽  
Bernardo Oyarzún ◽  
Thijs J. H. Vlugt ◽  
Joachim Gross
Keyword(s):  
Phase Transition ◽  
Hard Sphere ◽  
Nematic Phase ◽  
Chain Fluids

Nematic-isotropic phase transition in diblock fused-sphere chain fluids

2004 ◽  
Vol 69 (6) ◽  
Author(s):  
R. Diplock ◽  
D. E. Sullivan ◽  
K. M. Jaffer ◽  
S. B. Opps
Keyword(s):  
Phase Transition ◽  
Isotropic Phase ◽  
Chain Fluids

Nonlinear Optical Absorption and Related Phenomena in Liquid Crystals

2001 ◽  
Vol 709 ◽  
Author(s):  
N.V. Tabiryan ◽  
U.A. Hrozhyk ◽  
H.L. Margaryan ◽  
M.J. Mora ◽  
S.R. Nersisyan ◽  
...  
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Optical Absorption ◽  
Nonlinear Absorption ◽  
Nonlinear Optical ◽  
Isotropic Phase ◽  
Nonlinear Optical Absorption ◽  
Critical Opalescence ◽  
Application Potential ◽  
Large Application

SUMMARYThus, in the present paper, we reported about several processes of nonlinear absorption and transmission in dye-doped NLC: nonlinear absorption due to light induced reorientation of NLC doped by highly dichroic dyes; nonlinear transmission due to nonlinear birefringence, and self-extinguishing of the beam due to”critical opalescence,” critically enhanced light scattering at the pre-transition region of nematic-isotropic phase transition. All these processes have large application potential for laser beam control and characterization techniques.

Thermal phase transition behaviours of the blue phase of bent-core nematogen and chiral dopant mixtures under different boundary conditions

Soft Matter ◽  
2014 ◽  
Vol 10 (41) ◽  
pp. 8224-8228 ◽  
Author(s):  
Min-Jun Gim ◽  
Gohyun Han ◽  
Suk-Won Choi ◽  
Dong Ki Yoon
Keyword(s):  
Phase Transition ◽  
Boundary Conditions ◽  
Liquid Crystalline ◽  
Isotropic Phase ◽  
Different Boundary Conditions ◽  
Various Boundary Conditions ◽  
Thermal Phase Transition ◽  
Thermal Phase ◽  
Blue Phase ◽  
Chiral Dopants

We have investigated dramatic changes in the thermal phase transition of a liquid-crystalline (LC) blue phase (BP) consisting of bent-core nematogen and chiral dopants under various boundary conditions during cooling from the 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)’.

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