A short review is given of recent X-ray diffraction studies of the phases and phase transitions of thermotropic liquid crystals. The areas covered are twist-grain-boundary phases, antiferroelectric phases studied with resonant X-ray diffraction and smectic phases within gel structures. In all areas, X-ray diffraction has played a key role. Nonetheless, open questions remain: the nature of the smectic C variant of the twist-grain-boundary phase, the origin of antiferroelectric phases, and whether novel Bragg glass states exist for smectic A gel samples.
|Number of pages||10|
|Journal||Acta Crystallographica Section A: Foundations of Crystallography|
|Publication status||Published - Jan 2005|
- II SUPERCONDUCTORS
- ASTERISK PHASE
- C PHASES