Patent ID: 8564199

Claim:
An atmospheric plasma apparatus, comprising an anode, a cathode, and an insulation medium disposed between the anode and the cathode, wherein an ionizable gas is filled between the anode and the cathode, the cathode comprises a plurality of identical plasma generating and removing units distributed uniformly, each of which comprises a plasma generating region and a plasma removing region which are equal to each other in area, any two plasma removing regions among every three plasma removing regions which are adjacent to each other have a same center-to-center distance, each of the plasma generating and removing units is in a regular hexagonal form, the plasma generating and removing units are arranged in a honeycomb structure, and the plasma removing region is in a circular form and disposed at a center of the plasma generating and removing unit with a ratio of a radius of the plasma removing region to a side length of the plasma generating and removing unit being 3 ⁢ 3 4 ⁢ π , or the plasma removing region is in a regular hexagonal form and disposed at a center of the plasma generating and removing unit with a ratio of a side length of the plasma removing region to a side length of the plasma generating and removing unit being 2 ⁢ 2 .