Light-driven rotation of gratings formed by electroconvection patterns in cholesteric liquid crystals
Light-driven rotation of gratings formed by electroconvection patterns in cholesteric liquid crystals
复制标题
胆甾型液晶中电对流图案形成的光栅的光驱动旋转
DOI:
10.1016/j.molliq.2021.116366
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发表时间:
2021-05
影响因子:
6
通讯作者:
ying xiang
中科院分区:
文献类型:
--
作者:
ying xiang
While morphological gratings made of solid structural materials have permanent periodicity, gratings induced by a periodic flow provide wide tunability utilizing the pattern formation mechanism and its dependence on the material properties. As a paradigm of such flow, here electric-field induced patterns, manifestations of electroconvection, are reported in a hybrid aligned cholesteric liquid crystal containing a chiral photosensitive dopant. The irradiation by UV light rotates the pattern via alteration of the helical pitch, where the magnitude and direction of the rotation angle depends on the UV light intensity, the concentration and type of the chiral dopant. A prototype grating capable of two-dimensional beam steering is demonstrated. Such tunability will guide chemists to search for smart molecular structures so as to control complex fluids in developing photonic devices with desired parameters.
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影响因子:
4
作者:
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通讯作者:
M. Lewis;M. Wiltshire
影响因子:
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作者:
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通讯作者:
Xinfang Zhang;B. Koz;H. Bisoyi;Hao Wang;Karla G. Gutiérrez-Cuevas;M. McConney;T. Bunning;Quan Li-Quan
影响因子:
6
作者:
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通讯作者:
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影响因子:
1.5
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通讯作者:
T. Nose;Toshitaka Miyanishi;Y. Aizawa;R. Ito;M. Honma
DOI:
10.1002/9780470439098
发表时间:
2009-03
期刊:
--
影响因子:
--
作者:
Yue Zhao;T. Ikeda
通讯作者:
Yue Zhao;T. Ikeda