Zinc Oxide Nanoparticles Dispersed p-(p'-Ethoxy benzylidene)- p-cyano aniline Mesogen: Statistical and Spectral Analysis

Abstract

Birefringence and order parameter are key points to judge the applications of liquid crystals (LC) in various fields of science and technology. Various methods are proposed to compute these parameters for liquids and liquid crystals [1-5]. Most common method of calculating birefringence is from the measurement of refractive indices [6-10]. However, recent investigations revealed that the birefringence can be calculated simply by using mathematical methods through image analysis of liquid crystal samples [11-15]. Present study also involved calculations of various optical parameters like absorption coefficient, birefringence, order parameter, etc. through statistical methods of textural images. Here, a comparative study was taken to pure and nanoparticles dispersed mesogens. Till now various analyses were done to almost all the pure mesogens [16-21], which found little drawbacks in application point of view [22-24]. However, addition of foreign elements to the lattice of pure mesogen perturbs transition temperatures optical parameters and various thermodynamical parameters, because mesogen is a soft and sensitive matter. Research has been going on in this way and found remarkable variations in the impure mesogens [25-30].

Structural, optical, thermal and NLO behavior of zinc hydrogen maleate dihydrate single crystal

“…Maleic acid acts not only as an acceptor but also as an acidic ligand. It is reported that compounds of maleate such as L-arginine maleate dehydrate, L-phenylalaninium maleate, L-alaninium maleate and 2 aminopyridinium maleate dihydrate have improved NLO efficiency [3][4][5]. Maleates are of practical importance because they are efficient catalysts and also have medical significance.…”