Studies of Nano-Particle Doped Liquid Crystal Mixtures
Studies of Nano-Particle Doped Liquid Crystal Mixtures
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DOI：
10.1080/15421400903048602
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发表时间：
2009-09
影响因子：
0.7
通讯作者：
G. Sureshchandra J.;Pradnya J. Prabhu;Arvind P. Singh;Balakrishna Sreeram;Vinita Dhulia;Bhakti S. Yadav;A. Kanwar
中科院分区：
文献类型：
--
作者：
G. Sureshchandra J.;Pradnya J. Prabhu;Arvind P. Singh;Balakrishna Sreeram;Vinita Dhulia;Bhakti S. Yadav;A. Kanwar
液晶（Liquid crystals，LC）是一种棒状分子，它可以像液体一样自由扩散，并在电场的作用下进行取向，分子的长轴指向同一方向。碳纳米管和巴基球由于其强度、导电性、柔韧性和新颖的电学特性而成为理想的液晶掺杂剂。掺杂C60的液晶显示出指向矢轴重取向的增强和非线性光学性质的增强。LC的折射率也可以通过掺杂纳米颗粒和/或纳米管来改变。在本文中，纳米粒子/纳米管的存在下的液晶的相变温度和分类的中间相，因此形成的影响，我们调查的帮助下，在偏光显微镜下研究的织构。相变温度以及使用各种技术的掺杂液晶的过渡热也被提出。
Liquid crystals (LCs) are rod-shaped molecules which can diffuse freely like liquid and orient themselves under the influence of electric field with the long axis of molecules pointing in the same direction. Carbon nanotubes and bucky balls are ideal LC dopants because of their strength, conductivity, flexibility and novel electrical characteristics. LCs doped with C60 show enhancement of the director axis reorientation and enhancement of its nonlinear optical properties. Refractivity of LCs can also be altered by doping nanoparticles and/or nanotubes. In this paper, the effect of the presence of nanoparticles/nao-tubes on the phase transition temperatures of the LCs and the classification of the mesophases so formed are investigated by us with the help of the textures studied under the polarizing microscope. The phase transition temperatures as well as the heats of transition of the doped LCs using various techniques are also presented.