An experimental evidence for large tilt fluctuations in the SCα* phase of chiral liquid crystals
Laboratoire de Physique de la Matière Condensée, Université de Picardie
Jules Verne, 33 rue Saint-Leu, 80039 Amiens, France
2 Centre de Recherches Paul Pascal, CNRS, Avenue Albert Schweitzer, 33600 Pessac, France
Accepted: 12 August 1997
Strong anomalies in the Raman scattered intensity of an internal mode have been detected in the phase of C8 tolane. Based upon an orientational order parameter analysis, they are attributed to large tilt angle fluctuations by comparison with those encountered in the neighbouring smectic A and smectic phases.
PACS: 61.30.-v – Liquid crystals / 78.30.-j – Infrared and Raman spectra
© EDP Sciences, 1997