Study of ferrocholesteric discotic and calamitic lyotropics by optical microscopy and X-ray diffraction
- 1 January 1984
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 45 (9), 1505-1512
- https://doi.org/10.1051/jphys:019840045090150500
Abstract
We have studied the cholesterization of discotic and calamitic lyotropic ferronematics by addition of brucine sulphate. The techniques used are optical microscopy for the textures and X-ray diffraction for the structures. The results concerning the pitch and the rotatory power of oriented samples containing or not ferrofluids are discussed in terms of de Vries theory. We have also examined the possibility of micellar deformation by addition of brucine sulphate. Finally, we have studied the hydrodynamic instabilities created in the sample of calamitic ferrocholesteric initially untwisted in a magnetic filedKeywords
This publication has 21 references indexed in Scilit:
- New Cholesteric and Nematic Lyotropic Mesophases from Di-Sodium N-Lauroyl-AspartateMolecular Crystals and Liquid Crystals, 1983
- A type I aqueous cholesteric lyomesophaseJournal of the American Chemical Society, 1981
- A type II aqueous cholesteric lyomesophaseCanadian Journal of Chemistry, 1980
- Liquid crystalline phases of the sodium decylsulfate/decanol/water system. Nematic-nematic and cholesteric-cholesteric phase transitionsJournal of the American Chemical Society, 1980
- Cholesteric states of micellar solutionsMolecular Physics, 1978
- Effect of counterion substitution on the type and nature of nematic lyotropic phases from nuclear magnetic resonance studiesThe Journal of Physical Chemistry, 1976
- The interaction of D and L‐alanine with an optically active model membrane systemFEBS Letters, 1975
- Liquid crystalline structure in polypeptide solutions. Part 2Discussions of the Faraday Society, 1958
- Liquid-Crystalline Structures in PolypeptidesNature, 1957
- Liquid-crystalline structures in solutions of a polypeptideTransactions of the Faraday Society, 1956