A device for generating uniform and stable jet plasma

Abstract

The invention discloses a device for producing uniform and stable jet plasma. The device comprises a high voltage electrode, a ground electrode, an air chamber and a ventilation pipe, wherein the high voltage electrode is arranged in the ventilation pipe, and the ground electrode is arranged on the outer surface of the ventilation pipe. In operation, a high voltage is applied between the high voltage electrode and the ground electrode, forming a plasma discharge region. The feed gas passes from the air chamber through the ventilation pipe to the plasma discharge region and the generated plasma is applied in the form of a jet to a processed object. The device also comprises a flow controller for controlling the component and the flow speed of the feed gas, and an insulation layer can be arranged on the tip of the high voltage electrode. The device can generate stable, uniform, and high-active particle intensity jet plasma, reduce the discharge voltage, improve the security, and be more suitable for multiple application fields such as biomedicine, material surface treatment, and environment protection.

Description

[0001] technology neighborhood [0002] The invention relates to the field of plasma application, in particular to a device for generating uniform and stable jet plasma. Background technique [0003] Both dielectric barrier discharge and corona discharge can generate non-equilibrium plasma with high electron energy under normal pressure, and have been widely researched and applied in the fields of material surface treatment, environmental protection, and biomedicine. [0004] In the above plasma application field, the active particles in the plasma play a very important role. For example, NO free radicals often play a key role in the medical field. Many diseases of the human body, such as skin cancer and chronic ulcers, are closely related to the imbalance of NO free radicals in the body. Exogenous NO free radicals can make up for the lack of NO in the body Insufficient, so as to achieve the therapeutic effect; OH free radicals can destroy the lipids of bacterial cells, prote...

AI Technical Summary

Problems solved by technology

Compared with these two electrode structures, the former has higher values ​​of initial discharge voltage, shrinkage streamer discharge voltage and electrical breakdown spark discharge voltage, and has good safety; while the latter has a large discharge intensity and produces Higher plasma active particle concentration, better plasma chemistry, but less safety

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