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Pan L, Huang CC. Surface-induced reduction of twisting power in liquid-crystal films. Phys Rev E Stat Nonlin Soft Matter Phys. 2011;83(6):060702doi: 10.1103/PhysRevE.83.060702.
Pan, L., & Huang, C. C. (2011). Surface-induced reduction of twisting power in liquid-crystal films. Physical review. E, Statistical, nonlinear, and soft matter physics, 83(6), 060702. https://doi.org/10.1103/PhysRevE.83.060702
Pan, LiDong, and Huang, C C. "Surface-induced reduction of twisting power in liquid-crystal films." Physical review. E, Statistical, nonlinear, and soft matter physics vol. 83,6 (2011): 060702. doi: https://doi.org/10.1103/PhysRevE.83.060702
Pan L, Huang CC. Surface-induced reduction of twisting power in liquid-crystal films. Phys Rev E Stat Nonlin Soft Matter Phys. 2011 Jun;83(6):060702. doi: 10.1103/PhysRevE.83.060702. Epub 2011 Jun 20. PMID: 21797293.
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Phys Rev E Stat Nonlin Soft Matter Phys. 2011 Jun;83(6):060702. doi: 10.1103/PhysRevE.83.060702. Epub 2011 Jun 20.

Surface-induced reduction of twisting power in liquid-crystal films.

Physical review. E, Statistical, nonlinear, and soft matter physics

LiDong Pan, C C Huang

Affiliations

  1. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.

PMID: 21797293 DOI: 10.1103/PhysRevE.83.060702

Abstract

Null transmission ellipsometry was employed to study the temperature evolution of the helical structure of the smectic-C(α)* phase. Free-standing films with thickness ranging from 31 to more than 400 layers were prepared and studied. The experimental results show a reduced twisting power in thin films. A simple model was constructed to explain the results. Surface effects were found to be the key reason for this phenomenon. Our findings are consistent with the theoretical studies of helically ordered magnetic films.

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