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    • Keywords

       

      Nematic liquid crystals; ZnO nanoparticles; dielectric permittivity; threshold voltage; conductivity.

    • Abstract

       

      Reported herein is the effect of dispersion of a fixed amount of 0.5% (wt/wt) ZnO nanoparticles (NPs) in a nematic (E7) liquid crystal (LC) mixture. Dispersion of ZnO NPs results in a significant improvement in electro-optical and dielectric parameters of the nematic mixture. Comparative analysis of undoped and NP-dispersed samples shows a reduced threshold voltage with better transmittance without compromising dielectric permittivity characteristics. In addition, an increase in the contrast ratio, birefringence, alternating-current conductivity and band gap was observed after dispersion of ZnO NPs in LCs. A polarized optical microscopic study of the NP-dispersed sample substantiates a slight increase in nematic–isotropic phase transition temperature of LCs.

    • Author Affiliations

       

      AMIT SHARMA1 2 PRAVEEN MALIK1 RAVINDRA DHAR3 PANKAJ KUMAR4

      1. Liquid Crystal Research Laboratory, Department of Physics, Dr B R Ambedkar National Institute of Technology, Jalandhar 144011, India
      2. Arni School of Technology, Arni University, Indora 176401, India
      3. Soft Material Research Laboratory, Centre of Material Sciences, University of Allahabad, Allahabad 211002, India
      4. Department of Applied Sciences, Chitkara University Institute of Engineering and Technology, Chitkara University, Jhansla, Rajpura, Patiala 140401, India
    • Dates

       
  • Bulletin of Materials Science | News

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