Plasma is the forth state of matter, which is composed of same quantities of positive and negative ions, so it remains neutral as a whole. Because of unstability of plasma state, chemical reaction occurs very frequently and actively.

Plasma is divided into high temperature and non-thermal plasma.

ΆΔ High Temp. Plasma
High temp. plasma is thousands of degree celsius such as Sun, nuclear fusion, plasma torch, etc. and generally this is applied to cutting, melting and burning.

ΆΔ Non-thermal Plasma
Non-thermal plasma can be achieved by applying high voltage in room temperature and also by a high density magnetic field. It has been used widely from semi-conductor production to air pollution control. Moreover, non-thermal plasma technology is the great reliable method for clean environment of the future.

Lighting is a kind of plasma