Spontaneous Orientational Ordering of Liquid Crystal Layer During Evaporation onto Silica

The ordering process of nematic liquid crystal (LC) during evaporation onto silica substrate was investigated. The optical second-harmonic generation and polarized absorption measurements were employed to determine the orientational order parameters S 1 and S 2 . A sudden increase of S 1 was observe...

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Bibliographic Details
Published inMolecular Crystals and Liquid Crystals Vol. 512; no. 1; pp. 100/[1946] - 108/[1954]
Main Authors Taguchi, Dai, Kawate, Takashi, Miyazawa, Ryo, Weis, Martin, Manaka, Takaaki, Iwamoto, Mitsumasa
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis Group 01.01.2009
Taylor & Francis Ltd
Subjects
Evaporation
interface
liquid crystal
Liquid crystal polymers
Silica
spontaneous ordering
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Summary:The ordering process of nematic liquid crystal (LC) during evaporation onto silica substrate was investigated. The optical second-harmonic generation and polarized absorption measurements were employed to determine the orientational order parameters S 1 and S 2 . A sudden increase of S 1 was observed during the first layer deposition while S 2 gradually increased. Interestingly, S 1 was nearly constant after the completion of the first layer deposition, while S 2 was similar to that in the first layer deposition. The results suggest that spontaneous orientational ordering process is induced during the first monolayer formation.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421400903050608