High-efficiency optical transfer of torque to a nematic liquid crystal droplet
High-efficiency optical transfer of torque to a nematic liquid crystal droplet
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DOI：
10.1063/1.1588366
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发表时间：
2003-06-30
影响因子：
4
通讯作者：
Misawa, H
中科院分区：
文献类型：
--
作者：
Juodkazis, S;Matsuo, S;Misawa, H
本文报道了在1064 nm激光捕获波长下，液晶E-44液滴中寻常光和非寻常光折射率之差的测定。通过测量被捕获的液滴开始旋转的时刻的激光镊子的椭圆率来计算这种差异。这种折射率差的测定精度约为5 × 10（-3）。当将疏水性液晶E-44浇铸到D2 O中时，形成0.5-5 μ m的液滴。对于无滑移边界条件，光扭矩到液晶液滴的传递效率被确定为70%。(C)2003年，美国物理学会。
We report on the determination of the difference in the refractive index between the ordinary and extraordinary rays in droplets of nematic liquid crystal E-44 at the wavelength of laser trapping, 1064 nm. This difference was calculated by measuring the ellipticity of laser tweezers for the moment at which rotation of the trapped droplet starts. The precision of this determination of the refractive index difference is approximately 5x10(-3). Hydrophobic nematic liquid crystal E-44 formed 0.5-5-mum droplets when cast into D2O. The efficiency of the transfer of light torque to the liquid crystal droplets was determined to be 70% for the no-slip-boundary condition. (C) 2003 American Institute of Physics.