Please wait a minute...
Chinese Physics, 2006, Vol. 15(7): 1544-1548    DOI: 10.1088/1009-1963/15/7/028
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

Development of a new atmospheric pressure cold plasma jet generator and application in sterilization

Cheng Cheng (程诚)a, Liu Peng (刘鹏)a, Xu Lei (徐蕾)a, Zhang Li-Ye (张力叶)a, Zhan Ru-Juan (詹如娟)a, Zhang Wen-Rui (张文锐)b
a Department of Modern Physics, University of Science and Technology of China, CAS Key Laboratory of Basic Plasma Physics, School of Science, Hefei 230026, China; b School of Life Science, University of Science and Technology of China, Hefei 230026, China
Abstract  This paper reports that a new plasma generator at atmospheric pressure, which is composed of two homocentric cylindrical all-metal tubes, successfully generates a cold plasma jet. The inside tube electrode is connected to ground, the outside tube electrode is connected to a high-voltage power supply, and a dielectric layer is covered on the outside tube electrode. When the reactor is operated by low-frequency (6 kHz--20 kHz) AC supply in atmospheric pressure and argon is steadily fed as a discharge gas through inside tube electrode, a cold plasma jet is blown out into air and the plasma gas temperature is only 25--30℃. The electric character of the discharge is studied by using digital real-time oscilloscope (TDS 200-Series), and the discharge is capacitive. Preliminary results are presented on the decontamination of E.colis bacteria and Bacillus subtilis bacteria by this plasma jet, and an optical emission analysis of the plasma jet is presented in this paper. The ozone concentration generated by the plasma jet is 1.0×1016cm-3 which is acquired by using the ultraviolet absorption spectroscopy.
Keywords:  atmospheric pressure cold plasma jet      sterilization      spectral measurement  
Received:  12 October 2005      Revised:  29 November 2005      Accepted manuscript online: 
PACS:  52.75.-d (Plasma devices)  
  52.77.Bn (Etching and cleaning)  
  52.77.Dq (Plasma-based ion implantation and deposition)  
  52.80.-s (Electric discharges)  

Cite this article: 

Cheng Cheng (程诚), Liu Peng (刘鹏), Xu Lei (徐蕾), Zhang Li-Ye (张力叶), Zhan Ru-Juan (詹如娟), Zhang Wen-Rui (张文锐) Development of a new atmospheric pressure cold plasma jet generator and application in sterilization 2006 Chinese Physics 15 1544

[1] Generation of stable and tunable optical frequency linked to a radio frequency by use of a high finesse cavity and its application in absorption spectroscopy
Yueting Zhou(周月婷), Gang Zhao(赵刚), Jianxin Liu(刘建鑫), Xiaojuan Yan(闫晓娟), Zhixin Li(李志新), Weiguang Ma(马维光), and Suotang Jia(贾锁堂). Chin. Phys. B, 2022, 31(6): 064206.
[2] Sterilization of mycete attached on the unearthed silk fabrics by an atmospheric pressure plasma jet
Rui Zhang(张锐), Jin-song Yu(於劲松), Jun Huang(黄骏), Guang-liang Chen(陈光良), Xin Liu(刘欣), Wei Chen(陈维), Xing-quan Wang(王兴权), Chao-rong Li(李超荣). Chin. Phys. B, 2018, 27(5): 055207.
[3] Experimental research on spectrum and imaging of continuous-wave terahertz radiation based on interferometry
Tie-Lin Lu(卢铁林), Hui Yuan(袁 慧), Ling-Qin Kong(孔令琴), Yue-Jin Zhao(赵跃进), Liang-Liang Zhang(张亮亮), Cun-Lin Zhang(张存林). Chin. Phys. B, 2016, 25(8): 080702.
[4] New terahertz dispersive device for single-shot spectral measurements of terahertz pulse
Wu Yin-Zhong (巫殷忠), Zhao Zong-Qing (赵宗清), Gu Yu-Qiu (谷渝秋), Wei Lai (魏来), Cao Lei-Feng (曹磊峰). Chin. Phys. B, 2014, 23(12): 125202.
[5] Sterilization of E. coli bacterium with an atmospheric pressure surface barrier discharge
Xu Lei (徐蕾), Zhang Rui (张锐), Liu Peng (刘鹏), Ding Li-Li (丁丽莉), Zhan Ru-Juan (詹如娟). Chin. Phys. B, 2004, 13(6): 913-917.
No Suggested Reading articles found!