Showing papers by "Shri Singh published in 2020"
TL;DR: In this paper, the optical properties and zeta potential of pure and CQDs dispersed nematic 7CB have been reported, and it has been observed that the dispersion of carbon quantum dots in host nematic matrix induces quenching of photoluminescence and reduces the Ultra-Violet-Visible (UV-Vis) absorbance of pure nematic at a lower wavelength.
28 citations
TL;DR: In this article, the dielectric and electro-optical properties of pristine and zinc ferrite (ZnFe2O4) nanoparticles (NPs) dispersed in host nematic 4ʹ-Heptyl-4-biphenyl carbonnitri...
Abstract: In this work, comprehensive results on dielectric and electro-optical properties of pristine and zinc ferrite (ZnFe2O4) nanoparticles (NPs) dispersed in host nematic 4ʹ-Heptyl-4-biphenylcarbonnitri...
25 citations
TL;DR: In this paper, the distortion free energy, order parameter for twist-bend nematic, and orientational distribution function in equilibrium state have been calculated based on the free energy minimization.
Abstract: Using a mean-field theory, a twist-bend nematic (NTB) phase has been described. In addition to second-order Legendre polynomial term, the chiral interaction potential includes third-order Legendre polynomial term also. It considers the coupling between a nematic director and a pitch axis of the NTB phase. The distortion free energy, order parameter for twist-bend nematic, and orientational distribution function in equilibrium state have been calculated. Based on the free energy minimization, we obtain that the inclusion of third-order Legendre polynomial term in interaction energy makes NTB phase more stable.
3 citations
TL;DR: In this paper, the results on the time resolved fluorescence, Raman properties and Zeta potential of pristine and zinc ferrite nanoparticles (ZnFe2O4 NPs) dispersed nematic liquid crystal, 4′-heptyl-4-biphenyl carbonitrile (7CB).
3 citations