Journal ArticleDOI
Evidence of pressure dependence tricritical point at the nematic–smectic-A transition
Reads0
Chats0
TLDR
In this article, the authors examined the effect of pressure on the nematic to smectic-A N-SmA transition within the Landau phenomenological theory and found that the theoretical predictions were in good qualitative agreement with experimental results.Abstract:
We examine the effect of pressure on the nematic to smectic-A N–SmA) transition within the Landau phenomenological theory. The influence of pressure on the N–SmA transition is discussed by varying the coupling between the orientational and translational order parameters. The possibility of the tricritical point at the N–SmA transition is discussed in a phenomenological way. The theoretical predictions are found to be in good qualitative agreement with experimental results.read more
Citations
More filters
Journal ArticleDOI
Distortion-sensitive insight into the pretransitional behavior of 4-n-octyloxy-4′-cyanobiphenyl (8OCB)
Sylwester J. Rzoska,Aleksandra Drozd-Rzoska,Prabir K. Mukherjee,David López,David López,Julio Cesar Martinez-Garcia +5 more
TL;DR: Results of studies of the static and dynamic dielectric properties in rod-like 4-n-octyloxy-4'-cyanobiphenyl with isotropic (I)-nematic (N)-smectic A (SmA)-crystal (Cr) mesomorphism, combined with measurements of the low-frequency nonlinear dielectrics effect and heat capacity are presented.
Journal ArticleDOI
Tests of the tricritical point in the SmA-to-N phase transition of binary mixtures of butyloxybenzylidene octylaniline and hexyloxybenzylidene octylaniline
TL;DR: In this article, a significant difference between the experimental Landau tricritical point (LTCP) in the Sm A-to-N phase transition in binary mixtures of butyloxybenzylidene octylaniline (4O.8 + 6O.
Journal ArticleDOI
Tricritical behavior of the nematic to smectic-A phase transition in the binary mixture of liquid crystal
TL;DR: The predictive capability of the present model for determining the tricritical point of a binary mixture displaying the N-SmA transition has been demonstrated by testing with reported phase diagrams sharing both phases.
Journal ArticleDOI
Improved analysis of the effect of chain flexibility on the nematic to smectic-A phase transition
TL;DR: In this paper, the authors examined the effect of the chain flexibility on the nematic to smectic-A phase transition within the Landau phenomenological theory and showed how the flexibility of the chains influences the critical behavior of the phase transition.
Journal ArticleDOI
Reentrant nematic and tricritical behavior of the nematic to smectic-A phase transition in liquid crystal mixture
TL;DR: In this article, an improved analysis of the reentrant nematic and tricritical behavior of the nematic to smectic A phase transition in liquid crystal mixture within phenomenological theory is presented.
References
More filters
Book
The physics of liquid crystals
P. G. de Gennes,Richard Alben +1 more
TL;DR: In this paper, the authors define an order parameter statistical theories of the nematic order phenomonological description of the nematic-isotopic mixtures and describe the properties of these mixtures.
Journal ArticleDOI
Simple Molecular Model for the Smectic A Phase of Liquid Crystals
TL;DR: In this article, the Maier-Saupe model with an orientational order parameter is extended to the smectic $A$ phase by introducing a new order parameter, the amplitude of a density wave in the direction of the nematic preferred axis.
Journal ArticleDOI
An analogy between superconductors and smectics A
TL;DR: The role of the phase in the second order smectic A↔ nematic transition is similar to the role of phase functions in superconductors as mentioned in this paper, where twist and bend distortions correspond to magnetic fields.
Journal ArticleDOI
First-Order Phase Transitions in Superconductors and Smectic- A Liquid Crystals
TL;DR: The superconducting phase transition is predicted to be weakly first order, because of effects of the intrinsic fluctuating magnetic field, according to a Wilson-Fisher $\ensuremath{\epsilon}$expansion analysis, as well as a generalized mean-field calculation appropriate to a type-I superconductor.
Journal ArticleDOI
Phase Transition in a Lattice Model of Superconductivity
TL;DR: In this paper, Monte Carlo data and duality arguments are applied to a lattice model to show that a three-dimensional type-II superconductor should have a transition asymptotically equivalent to that of a superfluid with reversed temperature axis, and not a first-order transition.