Alexe-Ionescu A L, Barbero G
Departamentul de Fizica, Universitatea Politehnica din Bucuresti, Bucharest, Romania.
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Jul;72(1 Pt 1):013702. doi: 10.1103/PhysRevE.72.013702. Epub 2005 Jul 8.
We discuss a theory recently proposed by Virga and co-workers for the analysis of the local elastic stability of nematic liquid crystals [R. Rosso, E. G. Virga, and S. Kralj, Phys. Rev. E. 70, 011710 (2004)]. The periodic instability in a nematic sample induced by the saddle-splay elastic constant or by the coupling of an external field with the flexoelectric polarization is reconsidered. We show that in the case in which the two surfaces limiting the sample are characterized by the same easy angle the analysis previously proposed by us coincides with the one proposed by Virga.
我们讨论了Virga及其同事最近提出的一种理论，用于分析向列型液晶的局部弹性稳定性[R. Rosso, E. G. Virga, and S. Kralj, Phys. Rev. E. 70, 011710 (2004)]。重新考虑了由鞍形展曲弹性常数或外部场与挠曲电极化的耦合在向列型样品中引起的周期性不稳定性。我们表明，在限制样品的两个表面具有相同易轴角的情况下，我们之前提出的分析与Virga提出的分析一致。
