Synchrotron X-Ray Study of the Thickness Dependence of the Phase Diagram of Thin Liquid-Crystal Films
Sirota, Eric B.
Sorensen, L. B.
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CitationCollett, Jeffrey, Peter S. Pershan, Eric B. Sirota, and L. B. Sorensen. 1984. Synchrotron x-ray study of the thickness dependence of the phase diagram of thin liquid-crystal films. Physical Review Letters 52(5): 356-359.
AbstractThe phase diagram of freely suspended thin films of heptyloxybenzylidene-heptylaniline shows dramatic changes for thicknesses below 22 layers. The most surprising feature of the phase diagram is the inclusion of two phases lacking long-range crystalline order (smectic-F and hexatic-B phases) between two crystalline phases (crystalline smectic B and smectic G). Neither the smectic F nor the hexatic B occurs in bulk samples. Between sixteen and ten layers the width, in temperature, of the hexatic-B phase increases.
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