The Structure and Unusual Optical Textures of Smectic C 2  Phases of New Tail‐to‐Tail Twins | Zendy

Weissflog W. | Zendy; Richter S. | Zendy; Dietzmann E. | Zendy; Rise J. | Zendy; Diele S. | Zendy; Schiller P. | Zendy; Pelzl G. | Zendy

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The Structure and Unusual Optical Textures of Smectic C 2 Phases of New Tail‐to‐Tail Twins

Author(s) -

Weissflog W.,

Richter S.,

Dietzmann E.,

Rise J.,

Diele S.,

Schiller P.,

Pelzl G.

Publication year - 1997

Publication title -

crystal research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1521-4079

pISSN - 0232-1300

DOI - 10.1002/crat.2170320210

Subject(s) - crystallography , tilt (camera) , chemistry , alkyl , phase (matter) , texture (cosmology) , materials science , stereochemistry , organic chemistry , mechanical engineering , artificial intelligence , computer science , engineering , image (mathematics)

New tail‐to‐tail twins with alkyl or perfluorinated spacers were synthesized. The mesomorphic properties were studied by polarizing microscopy and X‐ray diffraction measurements. It was found that the smectic C phase is a Sc 2 phase with alternating tilt and an intercalated structure. The alternating tilt gives rise to an unusual schlieren texture which exhibits not only singularities with the strength s = ±1 but also those with s = ±1/2 and s = ±3/2.

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