Mukherjee Prabir K
Department of Physics, Haldia Govt. College, P.O.-Debhog, Dist.-East Midnapore, 721657, India.
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Jun;71(6 Pt 1):061704. doi: 10.1103/PhysRevE.71.061704. Epub 2005 Jun 16.
A phenomenological model is developed to describe the isotropic-chiral-smectic-C phase transition. The anomalous part of the heat capacity of the chiral-smectic-C liquid crystals above the isotropic-chiral-smectic-C phase transition is calculated using Landau's fluctuation theory. The temperature dependence of the heat capacity above the transition point is calculated first for the Gaussian model and then taking the cubic and the quartic terms as a perturbation. The theoretical results are found to be in good agreement with experiment.
建立了一个唯象模型来描述各向同性-手性近晶C相转变。利用朗道涨落理论计算了手性近晶C液晶在各向同性-手性近晶C相转变温度以上的比热反常部分。首先针对高斯模型计算了转变点以上比热的温度依赖性,然后将三次项和四次项作为微扰进行计算。发现理论结果与实验结果吻合良好。