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.

引用

页数：3

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