| AVS 61st International Symposium & Exhibition | |
| Plasma Science and Technology | Tuesday Sessions |
| Session PS-TuP |
| Session: | Plasma Science and Technology Poster Session |
| Presenter: | Chieh-Wen Chen, National Taiwan University, Taiwan, Republic of China |
| Authors: | C.W. Chen, National Taiwan University, Taiwan, Republic of China Y.J. Yang, National Taiwan University, Taiwan, Republic of China C.C. Hsu, National Taiwan University, Taiwan, Republic of China |
| Correspondent: | Click to Email |
A low cost and portable needle-type DBD jet operated under atmospheric pressure is developed. The plasma jet is comprised of an inner grounding electrode made of stainless steel rod, a quartz tube serving as the dielectric layer, and an outer powered ring electrode that is attached to the outer surface of the quartz tube. The quartz tube is 6-cm long with inner and outer diameters of 6 and 8 mm, respectively. A needle (25G) is attached to one side of the quartz tube that serves as the exit nozzle. This jet is powered by a low cost portable power that is commercially available (PVM 12, Information Unlimited, USA). Helium with a flow rate below 2 slm is used as the plasma gas. With this arrangement, a jet approximately 2 mm long can be extended out of the needle tip. The key features of this jet are (i) low cost: less than USD$100 per system, (ii) portable, and (iii) equipped with a robust needle. Diagnostic studies of this plasma jet and using it for materials processing with a spatial resolution down to 1 mm will be presented.