Patent ID: 8471170

Claim:
A plasma processing apparatus, comprising: an outer dielectric tube, the outer dielectric tube including an outer tube inner surface and an outer tube outer surface, wherein the outer tube inner surface has an outer tube inner surface etching rate; an inner dielectric tube, the inner dielectric tube including an inner tube outer surface, wherein the outer tube inner surface and the inner tube outer surface define an annular channel, and further wherein the inner tube outer surface has a inner tube outer surface etching rate; a first outer electrode, the first outer electrode having a first outer electrode inner surface disposed on the outer tube outer surface; a first central electrode, the first central electrode being disposed inside the inner dielectric tube, the first central electrode further configured to be coupled to the first outer electrode when a first RF energy source is applied to one of the first outer electrode and the first central electrode; a first reaction zone defined between the first outer electrode and the first central electrode; and a nanoparticle precursor gas source in fluid communication with an inlet of the annular channel, said precursor gas source contains one or more nanoparticle precursor gases.