Chiral-induced self-assembly sphere phase liquid crystal with fast switching time
Chiral-induced self-assembly sphere phase liquid crystal with fast switching time
复制标题
具有快速切换时间的手性诱导自组装球相液晶
DOI：
10.1063/1.4867358
复制
发表时间：
2014-03-03
影响因子：
4
通讯作者：
Shieh, Han-Ping D.
中科院分区：
文献类型：
--
作者：
Zhu, Ji-Liang;Ni, Shui-Bin;Shieh, Han-Ping D.
在各向同性和蓝相之间或各向同性和手性向列相之间的狭窄温度范围内观察到由手性掺杂剂诱导的液晶的流体自组装球相（SP）。 SP 由三维扭转球 (3-DTS) 和 3-DTS 之间的向错组成。通过用无定形聚合物链稳定向错，SP 的温度范围已扩大到 85°C 以上。聚合物稳定的SP的电光切换时间为亚毫秒级，开关电场为4.4 V μm−1，在显示器、3D可调谐光子晶体和相位调制器中具有广阔的应用前景。
A fluid self-assembly sphere phase (SP) of liquid crystal induced by chiral dopant is observed in a narrow temperature range between isotropic and blue phase or between isotropic and chiral nematic phase. The SP consists of three-dimensional twist spheres (3-DTSs) and disclinations among 3-DTSs. The temperature range of the SP has been broadened to more than 85 °C by stabilizing the disclinations with amorphous polymer chains. The electro-optical switching time of the polymer-stabilized SP is demonstrated in sub-millisecond with a low switching electric field of 4.4 V μm−1, which is of promising applications in displays, 3-D tunable photonic crystals, and phase modulators.