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- biaxial nematic phase 双轴向列相
- In nematic liquid crystal, the anisotropy of the molecular shape leads to phase transitions from isotropic phase to nematic, from unixial nematic to biaxial nematic. 在向列相液晶中,由于液晶分子形状的各向异性,系统可以产生由各向同性相至单轴向列相以及由单轴向列相至双轴向列相的相变。
- Generally, the shape of the biaxial nematic molecules is between rod-like and disk-like. 一般地,双轴性液晶分子的形状介于棒状和盘状之间。
- Increasing biaxiality of molecular shape, the system will form a para-biaxial nematic phase at higher temperature.Decreasing temperature, the system will continuously enter into normal biaxial phase. 增加分子的双轴性,可使系统在较高温度下诱导出准双轴相,降低温度,系统连续地进入双轴相。
- Chiral dopants play an important role in liquid crystal displays, which can convert nematic phase to cholesteric phase. 摘要手性添加剂能诱导向列相形成胆甾相,在液晶显示中具有重要的用途。
- Liquid crystals in a nematic phase, in which there is no spatial ordering of the molecules, for example, are used in LCD technology. 液晶在一个向列的阶段,没有空间定货分子,例如,被使用在LCD技术。
- The results showed that all polymers prepared were thermotropic liquid cryrt-ailine polymers and formed nematic phase only. 结果显示,所制备的聚合物为热致向列型液晶聚合物。
- All target compounds exhibitwide smectic A phase and compounds bearing short terminal tail chains exhibit narrow nematic phase. 发现目标化合物都呈现很宽的近晶A相,当另一侧的碳氢链较短时,还有较窄的向列相存在。
- The result shows that because of the external field, the uniaxial shape molecules will form a para-uniaixal nematic phase at higher temperature. 结果表明,由于外场的诱导作用,对于单轴性分子,系统可在较高温度下诱导出准单轴相。
- biaxial nematic azo liquid crystal 双光轴偶氮液晶
- DSC analyses show that these compounds have a broad nematic range and the substitute of lateral fluorine can suppress the smectic phase effectively,thus broaden the nematic phase. DSC分析表明产物具有较宽的液晶相区,引入侧向氟原子可以有效地抑制近晶相,从而扩大向列相温区。
- The Investigation on Photoinduced Nematic State of Biaxial Nematic Azo Liquid Crystal Molecula 双光轴偶氮液晶分子光致异构的机理研究
- Keywords aromatic polyester;nematic phase;texture;disklike texture; 聚芳酯;向列相;织构;圆盘形结构;
- Keywords biaxial nematic azo liquid crystal;photoinduced nematic;high density optical storage;high speed optical control device; 关键词双光轴偶氮液晶;光致定向;高密度光存储;高速光控器件;
- Keywords liquid crystal;synthesis;cyclohexane;nematic phase;smectic phase; 液晶;合成;环己烷;向列相;近晶相;
- Keywords liquid-crystalline;monomer;polymer;nematic phase;smectic phase; 液晶;单体;聚合物;向列相;近晶相;
- The child is going through a difficult phase. 那孩子正经历困难的阶段。
- biaxial nematic liquid crystal 双轴向列相液晶
- The two sets of traffic lights were out of phase. 那两组交通灯不同步。
- They have decided to phase in the new techniques. 他们已决定逐步引入新技术。