Inactivation of a 25.5 μm Enterococcus faecalis biofilm by a room-temperature, battery-operated, handheld air plasma jet

被引：150

作者：

Pei, X. ^{[1
]}

Lu, X. ^{[1
]}

Liu, J. ^{[1
]}

Liu, D. ^{[1
]}

Yang, Y. ^{[1
]}

Ostrikov, K. ^{[2
,3
]}

Chu, Paul K. ^{[4
]}

Pan, Y. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Hubei, Peoples R China

[2] CSIRO Mat Sci & Engn, PNCA, Lindfield, NSW 2070, Australia

[3] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia

[4] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2012年 / 45卷 / 16期

基金：

高等学校博士学科点专项科研基金; 澳大利亚研究理事会;

关键词：

Biofilms - Electric discharges - Bacilli - Electric batteries - Pulse repetition rate;

D O I：

10.1088/0022-3727/45/16/165205

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Effective biofilm inactivation using a handheld, mobile plasma jet powered by a 12V dc battery and operated in open air without any external gas supply is reported. This cold, room-temperature plasma is produced in self-repetitive nanosecond discharges with current pulses of similar to 100 ns duration, current peak amplitude of similar to 6mA and repetition rate of similar to 20 kHz. It is shown that the reactive plasma species penetrate to the bottom layer of a 25.5 mu m-thick Enterococcus faecalis biofilm and produce a strong bactericidal effect. This is the thickest reported biofilm inactivated using room-temperature air plasmas.

引用

页数：5

共 16 条

[1] Degradation of Staphylococcus aureus bacteria by neutral oxygen atoms [J].