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Journal Article

Structure of the chiral smectic-Cα* phase


Bahr,  Christian
Group Structure formation in soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Schlauf, D., Bahr, C., & Nguyen, H. T. (1999). Structure of the chiral smectic-Cα* phase. Physical Review E, 60(6), 6816-6825. doi:10.1103/PhysRevE.60.6816.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-B624-5
Ellipsometric measurements of freely suspended films of a chiral liquid-crystal compound possessing the phase sequence smectic-A–smectic-C*α–smectic-C* have been conducted in order to elucidate the structure of the smectic-C*α phase. The measured ellipsometric quantities Δ and Ψ are compared with values, which were calculated for model films using the 4×4 matrix method. Our results confirm, for the compound under investigation, predictions of a phenomenological model [M. Čepič and B. Žekš, Mol. Cryst. Liq. Cryst. 263, 61 (1995)] according to which the smectic-C*α phase is characterized by a short-pitch helical structure.