Polarization studies of resonant forbidden reflections in liquid crystals

P. Fernandes, P. Barois, S. T. Wang, Z. Q. Liu, B. K. McCoy, C. C. Huang, R. Pindak, W. Caliebe, H. T. Nguyen

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We report the results of resonant x-ray diffraction experiments performed on thick films of a biaxial liquid crystal made of achiral bent-core molecules. Polarization properties of forbidden reflections are observed as a function of the sample rotation angle φ about the scattering vector Q for the first time on a fluid material. The experimental data are successfully analyzed within a tensor structure factor model by taking the nonperfect alignment of the liquid crystal into account. The local structure of the B2 mesophase is hence determined to be SmCSPA.

Original languageEnglish (US)
Article number227801
JournalPhysical Review Letters
Issue number22
StatePublished - Nov 26 2007

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