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나노물질 및 화학반응 연구단
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Liquid crystals: Electric fields line up graphene oxide

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Title
Liquid crystals: Electric fields line up graphene oxide
Author(s)
Ju Young Kim; Sang Ouk Kim
Publication Date
2014-04
Journal
NATURE MATERIALS, v.13, no.4, pp.325 - 326
Publisher
NATURE PUBLISHING GROUP
Abstract
Jang-Kun Song and colleagues demonstrate that efficient electric field switching of graphene oxide (GO) liquid crystals is indeed possible in low-concentration dispersions and demonstrate a prototype of a GO LCD. Song and collaborators observed that flow or high-frequency alternating-current electric fields induced liquid crystallinity in GO dispersions at concentrations low enough for the dispersion to be isotropic when the field is off. The electric-field switching of GO liquid crystals demonstrated by Song and co-authors occurs through a direct transition from an isotropic to a highly aligned liquid crystalline phase. Another notable point of Song and co-authors' GO LCDs is their low power consumption for optical switching. GO flakes with larger Kerr coefficients would lead to faster relaxation times, of relevance to applications in optical communication, nonlinear optics and laser technology. GO liquid crystals also have prospects for the fabrication of functional materials with tailored morphologies.
URI
https://pr.ibs.re.kr/handle/8788114/1083
ISSN
1476-1122
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
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