Liquid Crystals

From Soft-Matter
Jump to: navigation, search

Definition

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

The symmetry of liquid crystalline phases can be categorized in terms of their orientational and translational degrees of freedom. Classification.jpg

Reference

Shri Singh, "Liquid Crystals Fundamentals", World Scientific Publishing Co. Pte. Ltd, Singapore (2002)