Laser beam propagation in a flow aligned nematic liquid crystal: analysis on liquid/light interactions

Abstract

The propagation of laser beam in a flow aligned nematic liquid crystal (NLC) and its interaction with liquid are illustrated in this letter. The effect of polarization and scattering on the transmitted power through the NLC under external perturbation flow is demonstrated here. It is found that the flow rate has a significant role in the modulation of refractive index of the medium leading to scattering and change in polarization. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

Substituent and solvent effects on UV‐visible absorption spectra of liquid crystalline disubstituted biphenylcyclohexane derivatives – a computational approach

“…Optical features in the ultraviolet-visible (UV-Vis) region can often be traced to the excitation of specific types of electrons in a material. Since the most of LC compounds contain an extended conjugated aromatic moiety, spectroscopic measurements such as UV-Vis absorption are considered to be necessary [4], which influences on the desired electronic or optical properties in the bulk liquid crystalline phases of materials [5]. Usually, this is monitored by UV-Vis spectroscopy at the absorption maxima, which implies a destructive read-out of molecular systems.…”

Order–Disorder Phenomenon of Nematogens at Molecular Level—A Computational Approach

“…Applications for this kind of materials are still being discovered and continue to provide effective solutions to many different problems. Material and phase stabilities are primary concern for all devices desiring to have a long operational lifetime [1,2]. The most common nematic LC structure for displays consists of an alkyl chain, one or two cyclohexane rings, a phenyl rings, and a polar group.…”