Transactions on Electrical and Electronic Materials

  • 제14권3호
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  • Pages.111-115
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  • 2013
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  • 1229-7607(pISSN)
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  • 2092-7592(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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Dielectric and Optical Study of Polymer Nematic Liquid Crystal Composite

  • Manohar, S. (Department of Physics, R M L Awadh University) ;
  • Shukla, S.N. (Department of Physics, R M L Awadh University) ;
  • Chandel, V.S. (Department of Physics, Integral University) ;
  • Shukla, J.P. (Department of Physics, University of Lucknow) ;
  • Manohar, R. (Department of Physics, University of Lucknow)
  • 투고 : 2012.11.05
  • 심사 : 2013.03.18
  • 발행 : 2013.06.25
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초록

The dielectric anisotropy and dispersion of the real and imaginary part of the permittivity of commercially important nematic mixture E-24 and its polymer composite were investigated in the frequency range from 1 kHz to 10 MHz, and temperature range $14^{\circ}C$ to $55^{\circ}C$. The percentage optical transmittance and density have also been measured for both the systems. The results have been explained by assuming molecular rotation about the long molecular axis, under a hindering nematic potential. The dielectric anisotropy ${\Delta}{\varepsilon}$ is positive, and the mean dielectric permittivity falls with rising temperature. ${\Delta}{\varepsilon}$ is also used to determine the order parameter with varying temperature.

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