Bend-Induced Melting of the Smectic-A Phase: Analogy to a Type-I Superconductor
Ruiting Wang, Ishtiaque M. Syed, Giovanni Carbone, Rolfe G. Petschek, Charles Rosenblatt
DOI 10.1103/PhysRevLett.97.167802 · Physical Review Letters
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Abstract
Using an atomic force microscope to nanopattern a substrate for liquid crystal alignment, a bend distortion is imposed on a liquid crystal. In regions of large bend the smectic-A phase melts into the nematic phase, and the width of the melted region is measured as a function of temperature. The results are consistent with type-I superconducting (nematic–smectic-A) behavior, wherein a large magnetic field (bend or twist distortion) induces an order to disorder transition. A model that accounts for non-mean-field behavior is presented.
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