“…The sequence of these phases is a direct consequence of the complex 3D bending of the four edgesharing benzene rings that constitute the molecules, like a twisted banana. We observe, moreover, a pronounced iridescent light scattering with a bright orange color at T 0 =84 • C. This selective reflection corresponds to a resonance of the temperature dependent, chiral pitch length with the wavelength of light [35]. It allows an independent assignment of the onset of its chiral phase.…”
“…The sequence of these phases is a direct consequence of the complex 3D bending of the four edgesharing benzene rings that constitute the molecules, like a twisted banana. We observe, moreover, a pronounced iridescent light scattering with a bright orange color at T 0 =84 • C. This selective reflection corresponds to a resonance of the temperature dependent, chiral pitch length with the wavelength of light [35]. It allows an independent assignment of the onset of its chiral phase.…”
“…The texture of studied nematic layer is not visible. Many authors [10,[14][15][16][17][18][19][20][21][22][23][24][25] applied this method for determining n e , n o , n i . Abbe's refractometer can be replaced by Pulfrich's refractometer based on similar concept.…”
This article is a survey of techniques for experimental determination of ordinary and extraordinary refractive indices and birefringence of uniaxial liquid crystals. The ideas of methods are briefly described with basic references added.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.