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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Structure studies of the nematic phase formed by bent-core molecules

Vaupotic, N. and Szydlowska, J. and Salamonczyk, M. and Kovarova, A. and Svoboda, J. and Osipov, M.A. and Pociecha, D. and Gorecka, E. (2009) Structure studies of the nematic phase formed by bent-core molecules. Physical Review E, 80 (3). ISSN 1539-3755

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Abstract

In recent years there are several reports showing that bent-core mesogenic molecules are able to form biaxial nematic phase in which molecular rotation around the long molecular axis is strongly hindered. The x-ray pattern with azimuthally split signals at low angle region of diffraction is usually given as evidence for the biaxial nematic phase. We show experimentally and theoretically that such x-ray pattern is due to the local smectic-C fluctuations ('cybotactic' groups) in the uniaxial nematic phase.