Plasma technology is based on a simple physical principle. By administering energy, the states of aggregation change: a solid body becomes liquid, a liquid passes into a gaseous state. If more energy is added to a gas, it ionises and turns into plasma, a state of high energy aggregation called also the fourth state of matter.
The plasma was only discovered in 1928 by Irving Langmuir. Yet it is not a particularly rare state in nature. On the contrary: over 99% of the visible matter in the universe is in the plasma state. On earth it is present in natural form, for example, in lightning or in the aurora borealis and australis. During the solar eclipses it is possible to observe the plasma in the form of a luminous corona that surrounds the sun.
The contribution of energy determines the transition from a state of aggregation to the next according to the order: solid, liquid and gaseous. By administering additional energy to the gaseous matter with an electric discharge, the plasma is obtained.
Energy of Plasma
Plasma is a state of matter characterized by a high level of unstable energy. In contact with solid materials, e.g. Plastics and metals, the adducted plasma energy affects the surface and modifies some important properties, such as surface energy.