The invention belongs to the technical field of
plasma, and provides a
plasma jet device with a suspension
electrode. The
plasma jet device comprises a medium
pipe, an air port, the suspension
electrode, a supporting structure, a high-
voltage electrode and a work power supply, wherein two ends of the medium
pipe are open, the air port is sleeved at the inlet end of the medium
pipe, the suspension electrode is suspended inside the medium pipe, the supporting structure is used for supporting the suspension electrode, the high-
voltage electrode is wrapped at the outlet end of the medium pipe, and the work power supply is connected with the high-
voltage electrode. When the
plasma jet device works, work air flows into the
plasma jet device through the air port and flows out through the outlet end of the medium pipe, and the
plasma jet with high-density
active particles is generated. According to the plasma jet device, the conical degree of the head of a
needle electrode is high, a strong
electric field can be formed,
ionization occurs more easily, and therefore
breakdown voltage can be effectively reduced, and the
active particles can be ionized more easily. The problem that the
active particles in the prior art are low in density is resolved, the area of the cross section of the plasma can also be enlarged, and therefore the
processing area can be enlarged in material
processing and biological application.