Cold Atmospheric Pressure Plasma Jet
A non-thermal plasma discharge generated at ambient atmospheric pressure where heavy ions remain near room temperature while free electrons reach high temperatures.
Governing formula
T_gas ≈ 300 K (Room Temp), T_electron ~ 10,000–50,000 K
SI unit
K (Gas Temperature ~300 K)
In depth
Utilizes high-frequency AC or pulsed DC power in noble gas flow (helium or argon). High electron temperature generates reactive oxygen and nitrogen species (RONS) while gas temperature remains near 30 °C, enabling safe direct contact with biological tissue.
Examples in the real world
Cold atmospheric plasma plumes used in plasma dentistry, wound healing, and cancer cell apoptosis.