Showing papers by "Shri Singh published in 1991"
01 Jan 1991-International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes
TL;DR: In this paper, the authors studied the kinetics of adsorption of iodide ions on chromium (IV) oxide using the radiotracer technique, and deduced that the adsorbent was of the activated type.
4 citations
TL;DR: In this article, the influence of induction interaction on the fundamental elastic properties of nematic liquid crystals using a theory based on density functional formalism is studied and numerical calculations for the elastic moduli associated with splay, twist and bend modes of deformation are reported.
Abstract: We study the influence of induction interaction on the fundamental elastic properties of nematic liquid crystals using a theory based on density functional formalism. Numerical calculations for the elastic moduli associated with splay, twist and ‘bend’ modes of deformation are reported for a model system described by an interaction potential having a reference part and a perturbation part. The reference interaction is represented qualitatively by the Berne-Pechukas model. The perturbation potential is represented by the attractive interaction which is described by induction interaction. Results for elastic constants are reported for a range of molecular length-width ratio, polarizability, dipole moment, temperature and density. We find that the contribution of induction interaction is small but non-negligible. The contribution is sensitive to the values of molecular parameters and density.
2 citations