Creation of liquid-crystal periodic zigzags by surface treatment and thermal annealing

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The orientation control of soft matter to create a large area single domain is one of the most exciting research topics in materials science. Recently, this effort has been extended to fabricate two-or three-dimensional structures for electro-optical applications. Here, we create periodic zigzag structures in liquid crystals (LCs) using a combination of surface treatment and thermal annealing. The LC molecules in the nematic (N) phase were initially guided by the alignment layer of rubbed polymers, which were quenched and subsequently annealed in the smectic A (SmA) phase to create periodic zigzag structures that represent modulated layer structures. Direct investigation of the zigzags was performed using microscopy and diffraction techniques, showing the alternately arranged focal conic domains (FCDs) formed. The resulting macroscopic periodic structures will be of interest in further studies of the physical properties of soft matters.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2015
Language
English
Article Type
Article
Keywords

FOCAL CONIC DOMAINS; SUPERHYDROPHOBIC SURFACE; DEFECT ARRAY; FABRICATION; TEXTURES; LITHOGRAPHY; CONFINEMENT; PATTERNS; ORDER; HOLES

Citation

SOFT MATTER, v.11, no.44, pp.8584 - 8589

ISSN
1744-683X
DOI
10.1039/c5sm01989c
URI
http://hdl.handle.net/10203/207559
Appears in Collection
NT-Journal Papers(저널논문)
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