A simple atmospheric pressure room-temperature air plasma needle device for biomedical applications

被引：83
|
作者：
Lu, X. [1 ]
Xiong, Z. [1 ]
Zhao, F. [2 ]
Xian, Y. [1 ]
Xiong, Q. [1 ]
Gong, W. [1 ]
Zou, C. [1 ]
Jiang, Z. [1 ]
Pan, Y. [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Coll Elect & Elect Engn, Wuhan 430074, Hubei, Peoples R China
[2] Huazhong Univ Sci & Technol, XieHe Hosp, Wuhan 430074, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 18期
关键词：
luminescence; microorganisms; patient treatment; plasma applications; plasma jets; MEDICINE;
D O I：
10.1063/1.3258071
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Rather than using noble gas, room air is used as the working gas for an atmospheric pressure room-temperature plasma. The plasma is driven by submicrosecond pulsed directed current voltages. Several current spikes appear periodically for each voltage pulse. The first current spike has a peak value of more than 1.5 A with a pulse width of about 10 ns. Emission spectra show that besides excited OH, O, N-2(C-B), and N-2+(B-X) emission, excited NO, N-2(B-A), H, and even N emission are also observed in the plasma, which indicates that the plasma may be more reactive than that generated by other plasma jet devices. Utilizing the room-temperature plasma, preliminary inactivation experiments show that Enterococcus faecalis can be killed with a treatment time of only several seconds.
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页数：3
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