Showing papers by "S. Chandrasekhar published in 1986"
TL;DR: In this article, a systematic account of the structures, energies and interactions of defects in the nematic, smectic, cholesteric and discotic phases of liquid crystals is presented.
Abstract: The study of defects in ordered media has become a subject of considerable interest to condensed matter physicists in recent years. This article presents a systematic account of the structures, energies and interactions of defects in the nematic, smectic, cholesteric and discotic phases of liquid crystals. Relevant experimental observations are also described.
182 citations
TL;DR: In this paper, the authors reported new nematic liquid crystals that are paramagnetic, which they termed paramagnetic liquid crystals (PLCs), and they used them to construct paramagnetic lattice.
Abstract: The paper reports new nematic liquid crystals that are paramagnetic.
33 citations
TL;DR: In this paper, the results of detailed density, dielectric and x-ray studies on three systems exhibiting different types of Smectic A-Smectic a transitions are reported.
Abstract: We report here the results of detailed density, dielectric and x-ray studies on three systems exhibiting different types of Smectic A-Smectic A transitions. It is found that although the layer spacing shows marked changes at the transitions, the corresponding density changes are extremely small. In every case studied, the dielectric anisotropy shows a pronounced decrease on going over to the lower temperature smectic A phase. This decrease can be correlated with the structural changes.
4 citations
01 Jan 1986
TL;DR: The theory of light propagation through very thin cholesteric and twisted nematic films is discussed in this article, where the authors propose a light propagation model for very thin and twisted nematic films.
Abstract: The theory of light propagation through very thin cholesteric and twisted nematic films is discussed.
1 citations