Microplasma Device

The fabrication of a cathode material that can proficiently emit electrons for the aim of improving the luminous efficiency of a microplasma device is of prime importance. Hence, hunt for a suitable cathode material has begun, in which the material can enhance the plasma characteristics and enhance the long-term sustainability of plasma discharges.

Microplasma device, one of the miniaturized devices, has received growing attention to the researchers because of its portability, cost, and robustness in a wide range of applications. The term "microplasma" is usually utilized to refer low-temperature plasma discharges with dimensions that range from a few micrometers up to a few millimetres. The plasma discharges generate a highly reactive environment that comprises charged particles, excited species, radicals, and photons, and the reduced dimensions allow low-power sources with small footprints suitable for the combination in microsystems and portable devices.

Plasma is generated mostly under low pressures in a large volume to keep uniform distribution over a large area. But microplasmas are typically generated at elevated pressure to atmospheric pressure or higher.