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Characterization of nematic lyomesophases by X‐ray diffraction
Author(s) -
Amaral L. Q.
Publication year - 1989
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889889005273
Subject(s) - characterization (materials science) , diffraction , lyotropic , liquid crystal , orientation (vector space) , anisotropy , diamagnetism , materials science , x ray , optics , crystallography , sign (mathematics) , micelle , chemistry , physics , liquid crystalline , geometry , mathematics , mathematical analysis , quantum mechanics , aqueous solution , magnetic field
Procedures for an independent characterization of lyotropic nematics by X‐ray diffraction (XD) are presented. N c (cylindrical micelles) and N d (discotic micelles) can be distinguished on the basis of surface orientation alone by a method of sample scanning through the X‐ray beam. The sign of the diamagnetic anisotropy susceptibility can also be independently obtained. The differences between optical and XD information for such a characterization are discussed.