On the biaxiality of smectic C and ferroelectric liquid crystals

On the biaxiality of smectic C and ferroelectric liquid crystals
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近晶C和铁电液晶的双轴性

DOI:
10.1080/02678292.2015.1028492
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发表时间:
2015
期刊:
影响因子:
2.2
通讯作者:
Jones J
Jones J
中科院分区:
化学3区
文献类型:
--
作者:
Jones J

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铁电液晶(FLC)是20世纪80年代和90年代的一个主要研究课题,乔治格雷和他的研究团队在发展该领域中发挥了重要作用。船体大学的化学家和皇家信号和雷达研究所(RSRE)的设备物理学家之间著名的共生关系在这一时期一直持续着,为FLC操作的τ Vmin模式提供了基础。该模式的原理依赖于近晶C和铁电近晶C* 液晶相固有的介电双轴性。与之前的向列相技术一样,新材料和器件物理学同时发展,使得材料在电压低于30 V时的寻址时间为12μs。在回顾了这些器件背后的材料物理之后,提出了双轴折射率和折射率的新测量,由此确定了双轴序参量C。
Ferroelectric liquid crystals (FLCs) were a major topic for research in the 1980s and 1990s, to which George Gray and his research family played a fundamental role in developing the field. The famous symbiotic relationship between the chemists at Hull University and device physicists at the Royal Signals and Radar Establishment (RSRE) continued throughout this period, providing the basis for theτVminmode of FLC operation. The principal of this mode relies on the dielectric biaxiality inherent to the smectic C and ferroelectric smectic C* liquid crystal phases. As with nematics before, new materials and device physics developed hand-in-hand, allowing materials to be formulated with addressing times of 12μs at voltages below 30 V. After reviewing the material physics behind these devices, new measurements of the biaxial refractive indices and permittivities are presented, from which the biaxial order parameter C is determined.
精确测定温度和频率相关的近晶 C 双轴介电常数张量
DOI: --
发表时间: 1999
期刊:
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