Liquid Crystals are partially ordered systems without rigid, long-range structure. They are intermediate in symmetry and structure between the solid crystalline state and the amorphous liquid state.
General Types of Liquid Crystals
- Calamitics( derived from rod shape molecules)
- Discotics(the mesophases formed from disc-like molecules)
- lath-like species ( intermediate between rod-like and disc-like molecules)
Classification:Symmetry and Structure
Shri Singh, "Liquid Crystals Fundamentals", World Scientific Publishing Co. Pte. Ltd, Singapore (2002)