dielectricbarrierdischargeSysteme

Dielectric barrier discharge systems, often abbreviated as DBD systems, are a type of electrical discharge used to generate plasma. In a DBD, at least one of the electrodes is covered by a dielectric material, such as glass or a ceramic. This dielectric layer prevents the direct passage of current by accumulating charge on its surface, which then limits the discharge to a series of transient micro-discharges.

DBD systems can operate with various gases, including air, nitrogen, oxygen, and noble gases, and at pressures ranging from atmospheric to near-vacuum. They are typically powered by alternating current (AC) or pulsed DC voltage sources at frequencies from mains frequency up to radio frequencies. The characteristics of the plasma produced, such as its temperature, density, and species, can be tuned by adjusting parameters like voltage, frequency, gas type, and gap distance.

The unique nature of DBDs, particularly their ability to operate at atmospheric pressure and their relatively low gas temperature (often referred to as non-thermal or cold plasma), makes them suitable for a wide range of applications. These include surface treatment and modification of materials, ozone generation, pollution control (e.g., removal of volatile organic compounds), biomedical applications like sterilization and wound healing, and even in the fields of aerospace and internal combustion engines for combustion enhancement and emissions reduction. The simplicity of their design and operation contributes to their widespread adoption.