A mean field model near the NAC point in liquid crystals

Date

2002-10-01

Author

Enginer, Y.
Salihoǧlu, S.
Yurtseven, Hasan Hamit

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

131
views

0
downloads

In this study we obtain the phase line equations for the nematic-smectic A (NA), smectic A-smectic C (AC) and nematic-smectic C (NC) transitions using a mean field model. We fit these phase line equations to the experimental phase diagram near the Nenatic-smectic A-smectic C (NAC) point. Our calculated phase diagram agrees well with the experimental.

Subject Keywords

C multicritical point, Smectic-a-phase, Landau theory, Tricritical point, Binary mixture, Heat-capacity, Calorimetry

URI

https://hdl.handle.net/11511/54434

Journal

Chinese Journal of Physics

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

A phase diagram near the NAC point in liquid crystals Salihoglu, S; Yurtseven, Hasan Hamit; Enginer, Y (2002-07-01) In this study using a mean field model we obtain the phase line equations for the NA. NC and AC transitions near the NAC point in a mixture of liquid crystals. We then fit these phase line equations to the experimental data. This fitting shows that our theoretical phase diagram predicts the correct experimental behaviour of the phase diagram in a mixture of liquid crystals.
A GPU accelerated level set reinitialization for an adaptive discontinuous Galerkin method KARAKUS, A.; WARBURTON, T.; AKSEL, MEHMET HALUK; Sert, Cüneyt (Elsevier BV, 2016-08-01) GPU accelerated high order reconstruction of signed distance function of the level set method is studied. The flow based reinitialization equation is discretized in space by using a nodal discontinuous Galerkin method on adaptive unstructured grids. Artificial diffusion with a modal decay rate based regularity estimator is used to damp out high frequency solution components near kinks, where mesh adaptivity is applied. A two rate Adams-Bashforth time integrator is developed to avoid time step restrictions r...
The differential quadrature solution of nonlinear reaction-diffusion and wave equations using several time-integration schemes Meral, Gulnihal; Tezer, Münevver (Wiley, 2011-04-01) Three different time-integration schemes, namely the finite difference method (FDM) with a relaxation parameter, the least-squares method (LSM) and the finite element method (FEM), are applied to the differential quadrature (DQM) solution of one-dimensional nonlinear reaction-diffusion and wave equations. In the solution procedure, the space derivatives are discretized using DQM, which may also be used without the need of boundary conditions. The aim of the paper is to find computationally more efficient ti...
The DRBEM solution of incompressible MHD flow equations Bozkaya, Nuray; Tezer, Münevver (Wiley, 2011-12-10) This paper presents a dual reciprocity boundary element method (DRBEM) formulation coupled with an implicit backward difference time integration scheme for the solution of the incompressible magnetohydrodynamic (MHD) flow equations. The governing equations are the coupled system of Navier-Stokes equations and Maxwell's equations of electromagnetics through Ohm's law. We are concerned with a stream function-vorticity-magnetic induction-current density formulation of the full MHD equations in 2D. The stream f...
A phase diagram for the ice VI-VII-VIII transitions Yurtseven, Hasan Hamit (1998-04-01) In this study we obtain the P-T phase diagram for the ice VI-VII-VIII phase transitions by means of the mean held model developed here. We have fitted the experimentally measured P-T data to our phase Line equations. Our calculated phase diagram describes adequately the observed behavior of the ice VI-VII-VIII phase transitions.

Citation Formats

Y. Enginer, S. Salihoǧlu, and H. H. Yurtseven, “A mean field model near the NAC point in liquid crystals,” Chinese Journal of Physics, pp. 560–569, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54434.