Investigation of orientational behaviour of nematic and smectic a compounds using the Raman microprobe |
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| Authors: | Didier Decoster Monique Constant Jacky Laureyns |
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| Institution: | Centre Hyperfréquences et Semi-conducteurs (LA 28 7 CNRS). Université des Sciences et Techniques de Lille. 59655 Villeneuve d''Ascq Cedex, France;Laboratoire de Spectrochimie Infrarouge et Raman (LP 2641 CNRS), Université des Sciences et Techniques de Lille, 59655 Villenueve d'' Ascq Cedex, France |
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| Abstract: | The Raman microprobe technique, has been used to probe orientational order in oriented samples of nematic CB5 and nematic and smectic CB8 versus spatial localization of the analysed microvolume. In the nematic state, the influence of long-wavelength director fluctuations is pointed out and an elastic constant derived. |
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