new method

the technique of band texture decoration has been used to study the disclination of thermotropic aromatic copolyester with T-shaped mesogens.The molecular chain or director orientation patterns of the nematic mesophase is decorated by band texture formed during quenching without being sheared because the molecular director orientation lies perpendicular to the long axis of band. All six of disclinations of S= ±1 /2 and S= ±1 decorated by this band texture have been observed directly under a polarizing optical microscope.Besides

a disclination of high strength S=-3/2 and closed inversion walls have been observed in this kind of LCPs.