Unique pitch evolution in the smectic-Cα* phase

Z. Q. Liu, B. K. McCoy, S. T. Wang, R. Pindak, W. Caliebe, P. Barois, P. Fernandes, H. T. Nguyen, C. S. Hsu, Shun Wang, C. C. Huang

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Abstract

Employing resonant x-ray diffraction, we observed unique pitch evolutions in the smectic-Cα* phase in mixtures of two antiferroelectric liquid crystals. Our results show that the pitch in this phase continuously evolves across 4 layers, contradicting a theoretical model that predicts that the smectic-CFI2* phase intervenes in the smectic-Cα* phase. The phase sequences we found can be explained by another model that includes one type of long-range interaction among smectic layers.

Original languageEnglish (US)
Article number077802
JournalPhysical Review Letters
Volume99
Issue number7
DOIs
StatePublished - Aug 17 2007

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Liu, Z. Q., McCoy, B. K., Wang, S. T., Pindak, R., Caliebe, W., Barois, P., Fernandes, P., Nguyen, H. T., Hsu, C. S., Wang, S., & Huang, C. C. (2007). Unique pitch evolution in the smectic-Cα* phase. Physical Review Letters, 99(7), [077802]. https://doi.org/10.1103/PhysRevLett.99.077802