Orientational statistics in 8 OCB - Raman and infrared study

Prasad, S.N.; Venugopalan, S.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3054

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DC Field	Value	Language
dc.contributor.author	Prasad, S.N.	-
dc.contributor.author	Venugopalan, S.	-
dc.date.accessioned	2007-06-21T06:25:31Z	-
dc.date.available	2007-06-21T06:25:31Z	-
dc.date.issued	1980	-
dc.identifier.citation	Proceedings of the international liquid crystals conference, Bangalore, 1979. Ed. S Chandrasekhar. Heyden, 1980, p381-385	en
dc.identifier.issn	0-85501-163-7	-
dc.identifier.uri	http://hdl.handle.net/2289/3054	-
dc.description	Restricted Access.	en
dc.description.abstract	The Raman depolarization ratios and the infrared absorption intensity of the -C = N vibrational band of 8 OCB have been measured in the aligned smectic A and nematic phases as also in the isotropic liquid. The temperature dependence of the absolute values of the orientational order parameters <P2(cosθ)> and <P4(cos θ) > have been evaluated from these data for both liquid crystalline phases. The <P2(cos θ)> values determined independently by the infrared and Raman methods are in good agreement with each other as well as with the normalized birefringence data reported earlier by Karat and Madhusudana. The <P4(cos θ)> values derived from the Raman measurements are found to be negative over the entire nematic range, but become slightly positive in the smectic A phase. We compare the present values of <P4 (cos θ) > with those determined previously for two related liquid crystals to assess the influence of the molecular structure on this order parameter.	en
dc.format.extent	217883 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	heyden	en
dc.rights	1980 Heyden	en
dc.title	Orientational statistics in 8 OCB - Raman and infrared study	en
dc.type	Article	en
Appears in Collections:	Research Papers (SCM)

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