Development of plasma needle to be used for biomedical applications

19th Chilean Physics Symposium 2014

Bora, B.^1,2 ; Jain, J.^1,3 ; Inestrosa-Izurieta, M.J.^1,2 ; Avaria, G.^1,2 ; Moreno, J.^1,2 ; Pavez, C.^1,2 ; Marcelain, K.^4,5 ; Armisen, R.^4,5 ; Soto, L.^1,2

Comisión Chilena de Enegía Nuclear, Santiago, Chile^1

Center for Research and Applications in Plasma Physics and Pulsed Power, P4, Chile^2

Universidad de Talca, Chile^3

Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Independencia Santiago

1027, Chile^4

Centro de Investigación y Tratamiento Del Cáncer, Facultad de Medicina, Universidad de Chile, Independencia Santiago

1027, Chile^5

关键词: Biological cells;    Biomedical applications;    Electrical diagnostics;    Electrical discharges;    Neutral particles;    Nonthermal plasma;    Plasma needles;    Water surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/720/1/012038/pdf
DOI  :  10.1088/1742-6596/720/1/012038

来源: IOP

【 摘 要 】

Plasma needle is a novel design of a plasma source at atmospheric pressure to achieve a non-thermal plasma jet. The advantage of the plasma needle is that it can be operated in open air, outside a vessel. The plasma that is generated with the plasma needle is small (about one millimetre) and non-thermal, the temperature of the neutral particles and ions is in about room temperature and suitably can interact with living biological cell without damaging the cell. In this work, we report the development of a plasma needle, which is operated by a dc power source and produced a stable plasma jet on water surface. Argon gas is used to operate the plasma needle. The preliminary electrical diagnostics of the plasma needle shows that the discharge is filamentary in nature. For diagnostic of the plasma jet produced by the developed plasma needle, the produced plasma jet is directed to water surface and characterization are carried out by means of electrical discharge characteristics and optical emission spectroscopy. In this work, preliminary results of the diagnostic will be presented.