Zinc Oxide (1% Cu) Nanoparticle in Nematic Liquid Crystal: Dielectric and Electro-Optical Study
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概要
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The present study reports the dielectric and electro-optical study of inorganic ZnO (Cu 1%) nanoparticles doped nematic liquid crystal (5CB). The dielectric permittivity is found to decrease in the nano doped sample. Nanoparticle doped liquid crystal has good response under various conditions to evaluate their potential as electro-optical materials for various purposes. From electro-optical study we have found Freedricksz transition voltage $V_{\text{th}}$ and response time $\tau_{0}$ and hence $K_{11}$ and rotational viscosity $\gamma$ are also calculated. It is found that $K_{11}$ and $V_{\text{th}}$ increases for nano-doped sample. Rotational viscosity $\gamma$ also increases for the nanoparticle doped sample. These changes have been explained in this article according to Osipov and Ternentjev theory of rotational viscosity of nematic liquid crystal.
- 2009-10-25
著者
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Misra Abhishek
Liquid Crystal Research Lab, Department of Physics, University of Lucknow, Lucknow 226007, India
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Srivastava Abhishek
Liquid Crystal Research Lab, Department of Physics, University of Lucknow, Lucknow 226007, India
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Manohar Rajiv
Liquid Crystal Research Lab, Department of Physics, University of Lucknow, Lucknow 226007, India
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Yadav Sat
Liquid Crystal Research Lab, Department of Physics, University of Lucknow, Lucknow 226007, India
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Pandey Kamal
Liquid Crystal Research Lab, Department of Physics, University of Lucknow, Lucknow 226007, India
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Sharma Prashant
Physics Department, Allahabad University, Allahabad 211002, India
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Pandey Avinash
Physics Department, Allahabad University, Allahabad 211002, India