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Smectic Liquid Crystal Defects for Self‐Assembling of Building Blocks and Their Lithographic Applications
Author(s) -
Kim Yun Ho,
Yoon Dong Ki,
Jeong Hyeon Su,
Lavrentovich Oleg D.,
Jung HeeTae
Publication year - 2011
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201001303
Subject(s) - materials science , liquid crystal , template , conic section , lithography , nanotechnology , lamellar structure , anchoring , lyotropic , molecule , self assembly , liquid crystalline , optoelectronics , composite material , geometry , chemistry , mathematics , structural engineering , organic chemistry , engineering
Recently, it has been reported that liquid crystal (LC) defects can be used to create highly periodic templates by controlling the surface anchoring and the elastic properties of LC molecules. The self‐assembled defect ordering of the LC materials takes advantage of the ability to achieve fast stabilization of molecular ordering and structure due to the reversible and non‐covalent interactions of the LC molecules. In this Featre Article, the defect structures of liquid crystalline materials will be demonstrated by the surface anchoring and elastic properties. A particular focus are the focal conic domains (FCDs) that are commonly observed in SmA liquid crystals and their lamellar lyotropic counterparts, which form periodic defect ordered structures. In addition, methodologies for creating lithographic templates from the defect order will be described. Finally, the review closes with a discussion of toric focal conic domain arrays that have been fabricated in this manner and used for various applications.