Experimental investigations of one liquid-crystal compound exhibiting the no-layer-shrinkage effect near the Sm-A-Sm-C* transition

C. C. Huang, S. T. Wang, X. F. Han, A. Cady, R. Pindak, W. Caliebe, K. Ema, K. Takekoshi, H. Yao

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Abstract

The nature of the smectic-A-smectic-C phase transition of one liquid-crystal compound showing almost no layer-shrinkage effect through the transition was investigated by using three experimental probes. X-ray diffraction and optical studies showed that the compound demonstrates a crossover behavior of different molecular packing arrangements within the bulk Sm-A phase window. It was found using calorimetry that there is a significant critical anomaly near the Sm-A-Sm-C* transition, although it is of weakly first order. It was also observed using electro-optical investigations that the de Vries compound has a first-order Sm-A-Sm-C* transition.

Original languageEnglish (US)
Article number041702
Pages (from-to)041702-1-041702-4
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume69
Issue number4 1
StatePublished - Apr 1 2004

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