Surface-groove-induced azimuthal anchoring of a nematic liquid crystal: Berreman's model reexamined.

Surface-groove-induced azimuthal anchoring of a nematic liquid crystal: Berreman's model reexamined. Research Abstract Details 

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Surface-groove-induced azimuthal anchoring of a nematic liquid crystal: Berreman's model reexamined. Abstract Text:

Jun-Ichi Fukuda,Makoto Yoneya,Hiroshi Yokoyama,

To account for azimuthal surface anchoring of a nematic liquid crystal, Berreman [Phys. Rev. Lett. 28, 1683 (1972)10.1103/PhysRevLett.28.1683] proposed a simple model attributing the surface anchoring to the elastic distortion of the liquid crystal induced by the grooves of a surface. He showed that the surface anchoring energy is proportional to sin(2)varphi, with varphi being the angle between the director at infinity and the direction of the surface grooves. We argue that his assumption of negligibly small azimuthal distortion of the nematic is not valid. Proper treatment of the azimuthal distortion reveals that the Berreman's model should yield a surface anchoring energy proportional to sin(4)varphi. This implies that surface grooves alone cannot contribute to the surface anchoring coefficient in the usual Rapini-Papoular sense.

Surface-groove-induced azimuthal anchoring of a nematic liquid crystal: Berreman's model reexamined. Publishing Authors By Initials

J Fukuda,M Yoneya,H Yokoyama,

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Surface-groove-induced azimuthal anchoring of a nematic liquid crystal: Berreman's model reexamined. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Physical review letters

VOLUME: 98

Page Numbers: 187803

Journal Abbreviation: Phys. Rev. Lett.

ISSN: 0031-9007

DAY: 4

MONTH: 05

YEAR: 2007

Surface-groove-induced azimuthal anchoring of a nematic liquid crystal: Berreman's model reexamined. Information

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LANGUAGE: eng

NlmUniqueID: 401141

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Grant and Affiliation Information for Surface-groove-induced azimuthal anchoring of a nematic liquid crystal: Berreman's model reexamined.

AFFILIATION: Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba 305-8568, Japan. fukuda.jun-ichi@aist.go.jp

Country: United States

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MEDLINETA: Phys Rev Lett

REFSOURCE: Phys Rev Lett. 2007 Sep 28;99(13):139902

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