dielectric barrier discharge

Dielectric barrier discharge (DBD) is a method of generating plasma, a state of ionized gas, by applying a high-voltage electric field across a gap separated by a dielectric (insulating) material. When the voltage exceeds a certain threshold, it causes tiny, controlled electrical sparks or filaments to form without burning the material. This process produces reactive species useful for applications like sterilization, pollution control, and surface treatment. DBD is safe and efficient because the dielectric prevents a continuous arc, allowing for stable plasma production at atmospheric pressure.