Cholesteric liquid crystal-carbon nanotube composites with photo-settable reversible and memory electro-optic modes.
Cholesteric liquid crystal-carbon nanotube composites with photo-settable reversible and memory electro-optic modes.
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具有可光设置可逆和记忆电光模式的胆甾型液晶-碳纳米管复合材料。
DOI：
10.1364/ao.52.000e53
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发表时间：
2013
期刊：
影响因子：
1.9
通讯作者：
R. Yamaguchi
中科院分区：
文献类型：
--
作者：
O. Yaroshchuk;S. Tomylko;I. Gvozdovskyy;R. Yamaguchi
研究了具有光学手性的胆甾相液晶(CLC)和少量碳纳米管(CNTs)组成的光敏电光复合材料。在具有同向异性锚定的细胞中，这些复合材料在胆固醇螺旋的光诱导解旋过程中表现出从指纹织构到同向向列织构的转变。与CLC相比，这种转变要延迟很多，这是因为碳纳米管稳定了胆固醇丝状结构域。CLC-CNT复合材料具有双模工作模式，可在可逆模式和记忆模式之间进行光学切换。研究发现，这种记忆响应与纤维状胆甾型结构域的弹性网络有关，该网络稳定了在电场中达到的平面CLC织构。反过来，可逆模对应于未缠绕的胆固醇态。讨论了该效应的潜在应用。
The photoresponsive electro-optical composites based on cholesteric liquid crystal (CLC) with optically controlled chirality and a minute amount of carbon nanotubes (CNTs) are studied. In cells with homeotropic anchoring, these composites exhibit a transition from fingerprint texture to homeotropic nematic texture in the course of photoinduced unwinding of the cholesteric helix. Compared with the CLC counterpart, this transition is much delayed, because of the stabilization of cholesteric filamentary domains by CNTs. The CLC-CNT composites demonstrate dual-mode operation with optical switching between reversible and memory mode. It is found that the memory response is associated with the elastic network of filamentary cholesteric domains that stabilizes the planar CLC texture reached in an electric field. In turn, the reversible mode corresponds to the unwound cholesteric state. Potential applications of this effect are discussed.
影响因子：
4
作者：
Shiraishi, Y;Toshima, N;Kobayashi, S
通讯作者：
Kobayashi, S