Plasma principleWhat is plasma? Plasma is also known as the fourth state of matter. Plasma's creation is similar to phase changes in matter. By applying energy (such as high heat) to matter, a solid melts to become a liquid, and a liquid evaporates to become a gas. By adding enough energy (such as RF or microwave), a gas can be broken down into plasma. In this state the plasma contains charged atoms, particles, ions and free radicals. Plasma is very chemically reactive due to its high energy state, making it very useful for changing the properties of materials. The plasma used here is low-temperature or unbalanced plasma – also known as low-temperature corona discharge. 
Its applications include:Removing surface contaminants Increasing surface roughness urface modification (hydrophilic/hydrophobic) mproving adhesion between thin-film coating and substrate Patterning Plasma polymerization Plasma induced grafting |
