What are Liquid Crystals?
English | Deutsch - Diese Seiten mit Google durchsuchen
Mesophases (liquid crystals and plastic crystals) are a state of order between crystals and liquids. They have imperfect long range orders of orientation and/or position. Thus, the can be fluid like a liquid and they can have anisotropic properties like crystals. Whereas the plastic crystals have a predominating positional order, the liquid crystals have a predominating orientational order.
The main reasons for the formation of liquid crystalline phases are:
The simplest liquid crystalline phases are the nematic phases, which have no positional order.
Smectic phases have layered structures.
The term liquid crystals covers a wide area of chemical structures, physical properties and technical applications.
Typical chemical structures are:
|Letzte Änderung: 5.8.2003, 16:24 Uhr von Volkmar Vill|
|Gestaltung: Matthias Vill 2003 | Kontakt: Volkmar Vill|