Question

define liquid crystals and its type??

Answer 1



This November is the Wikipedia Asian Month. Come join us.



Open main menu



Search

EditWatch this page

Read in another language

Liquid crystal



Schlieren texture of liquid crystal nematic phase

Liquid crystals (LCs) are a state of matterwhich has properties between those of conventional liquids and those of solidcrystals. For instance, a liquid crystal may flow like a liquid, but its molecules may be oriented in a crystal-like way. There are many different types of liquid-crystal phases, which can be distinguished by their different opticalproperties (such as textures). The contrasting areas in the textures correspond to domains where the liquid-crystal molecules are oriented in different directions. Within a domain, however, the molecules are well ordered. LC materials may not always be in a liquid-crystal phase (just as water may turn into ice or steam).

Liquid crystals can be divided intothermotropic, lyotropic and metallotropicphases. Thermotropic and lyotropic liquid crystals consist mostly of organic molecules, although a few minerals are also known. Thermotropic LCs exhibit a phase transitioninto the liquid-crystal phase as temperature is changed. Lyotropic LCs exhibit phase transitions as a function of both temperature and concentration of the liquid-crystal molecules in a solvent (typically water). Metallotropic LCs are composed of both organic and inorganic molecules; their liquid-crystal transition depends not only on temperature and concentration, but also on the inorganic-organic composition ratio.

Examples of liquid crystals can be found both in the natural world and in technological applications. Most contemporary electronic displays use liquid crystals. Lyotropic liquid-crystalline phases are abundant in living systems but can also be found in the mineral world. For example, many proteins and cell membranes are liquid crystals. Other well-known examples of liquid crystals are solutions of soap and various relateddetergents, as well as the tobacco mosaic virus, and some clays.

History

Design of liquid crystalline materials

Liquid-crystal phases

Biological liquid crystals

Mineral liquid crystals

Pattern formation in liquid crystals

Theoretical treatment of liquid crystals

External influences on liquid crystals

Effect of chirality

Applications of liquid crystals

See also

References

External links

Last edited 9 days ago by Ifnord



Content is available under CC BY-SA 3.0 unless otherwise noted.

Terms of UsePrivacyDesktop

Answer 2

$hello \: ji$
It's a state of the matter between a solid crystal and a liquid. A liquid crystal flows like a normal crystal, but has molecules which behave like a solid crystal.

They are anisotropic in nature, the molecules point in a single direction and their state mainly changes because of temperature.


HOPE HELPS ♥️