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

C. C. Huang, S. T. Wang, X. F. Han, A. Cady, R. Pindak, W. Caliebe, K. Ema, K. Takekoshi, and H. Yao
Phys. Rev. E 69, 041702 – Published 16 April 2004

Abstract

Three experimental probes have been employed to investigate the nature of the smectic-A–smectic-C (SmASmC*) phase transition of one liquid-crystal compound showing almost no layer-shrinkage effect through the transition. Results from both x-ray diffraction and optical studies indicate that the compound exhibits a crossover behavior of different molecular packing arrangements within the bulk SmA phase window. The calorimetry results show a significant critical anomaly near the SmASmC* transition, although it was found to be weakly first order.

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  • Received 12 December 2003

DOI:https://doi.org/10.1103/PhysRevE.69.041702

©2004 American Physical Society

Authors & Affiliations

C. C. Huang1, S. T. Wang1, X. F. Han1, A. Cady1,*, R. Pindak2, W. Caliebe2, K. Ema3, K. Takekoshi3, and H. Yao3

  • 1School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
  • 2NSLS, Brookhaven National Laboratory, Upton, New York 11973, USA
  • 3Department of Physics, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Oh-okayama, Meguro, 152 Tokyo, Japan

  • *Present address: Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA.

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Vol. 69, Iss. 4 — April 2004

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