Texture transformations and orientational properties of lyotropic nematics in magnetic field

Abstract

Dynamics of changes of the morphological properties and processes of orientation in lyotropic nematic mesophases by application of external magnetic field have been investigated in detail. The dynamics of changes of the optical birefringence values in nematic-calamitic mesophase vs. time has been determined. The optical mappings of nonequilibrium magnetically induced textures, which have been observed for this mesophase during orientational process, and changes of birefringence vs. time are presented.

Synthesis, mesomorphic and physical properties of two new analogs of Schiff’s base with an alkenic terminal chains

“…Peculiarities of specific and non-specific textures have been studied using the crystal-optics methods and also by means of the optical mapping (OM) technique. The OM technique was presented in [19,20] and was widely used in [21][22][23][24] for detailed investigations of liquid crystalline textures.…”

Peculiarities of Defective Formations in Heterophase Regions of the Thermotropic Phase Transitions in Liquid Crystals

“…[] and was widely used by various researches in refs. [] for detailed investigations of liquid crystalline textures and identification of liquid crystalline mesophases.…”

An optical microscopy study of the biaxial ‐ calamitic nematic lyotropic phase transition

“…The uniaxial nematic phases have been shown to be prolate (calamitic -N C + ) and oblate (discotic -N D -) micellar aggregates dispersed in water [11]. The N D -(N C + ) phase presents positive (negative) optical birefringence and negative (positive) anisotropy of diamagnetic susceptibility [1,[12][13][14]. The biaxial nematic phase (N B ) appears to be an intermediate phase along the border between the two uniaxial nematic ones.…”