Abstract
We study the effect of multiferroic Bismuth Ferrite (BFO) nanoparticles dispersed in nematic liquid crystal(NLC) i.e. 4-Cyano-4’-Pentylbiphenyl (5CB) on the orientational ordering at different biasing voltages (At 0V and 2V).The concentration of BFO nanoparticles doped was 0.5Mol% in NLC. Results shows that dielectric parameters are strong function of frequency and applied bias voltage. Moreover, Patch Antenna was designed based on Liquid Crystal (LC) Nanocomposites (LC+0.5 Mol%BFO nanoparticles) for earth and space applications. To fulfill the demand of modern antenna i.e. tunability, we have investigated a design of LC Nanocomposities based patch antenna with optimum frequency of 12 GHz. In this design, BFO nanoparticles dispersed in NLC is used as a dielectric substrate. Its dielectric permittivity is controlled by biasing voltage. Thus one gets tunability or shift in resonant frequency in the proposed geometry.
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