Synthesis,characterisation and SPIE analysis in pure and nano-dispersed N-(p-n-hexyloxybenzylidene)-p-n-Nonyloxy aniline

Synthesis, characterisation and phase transition studies in pure and 20 µl citrate-capped Au nano-dispersed liquid crystalline N-(p-n-hexyloxybenzylidene)-p-n-Nonyloxy aniline, 6O.O9, compounds are carried out using a polarising microscope attached with hot stage and camera to measure the phase transition temperatures. The enthalpy and transition temperatures are identified using differential scanning calorimetry. It is observed that the nematic transition temperature is decreased by the dispersion of citrate-capped Au nanoparticles into the liquid crystalline compound. Further, statistical parameters-based image enhancement algorithm is proposed to identify the crystalline phases in the pure and nano-doped liquid crystal compound and a transient S_B mesophase is clearly observed through specified algorithm. Empirical result analysis clearly reveals the robustness of this method over existing image enhancement methods.