Plasma is the fourth state of matter after solids, liquids, and gases. Examples of plasma in nature are the sun – a gigantic plasma ball – or lightning on Earth – temporary electrical discharge. Cold plasma is maintained at temperatures below 40°C, which unlike hot plasma enables it to be applied to living organisms.
Cold plasma is generated by applying energy to a gas, which makes the gas molecules or atoms lose their outer electrons and become ionized. It is comprised of a reactive mix of electrons, ions, excited atoms, and molecules – reactive species (e.g. O3, NO, NO2, etc.), UV radiation, and heat, with wide potential medical application.Cold plasma is generated by applying energy to a gas, which makes the gas molecules or atoms lose their outer electrons and become ionized.