A solar powered handheld plasma source for microbial decontamination applications

被引：34

作者：

Ni, Y. ^{[1
]}

Lynch, M. J. ^{[1
]}

Modic, M. ^{[1
,2
]}

Whalley, R. D. ^{[3
]}

Walsh, J. L. ^{[1
]}

机构：

[1] Univ Liverpool, Dept Elect Engn & Elect, Brownlow Hill, Liverpool L69 3GJ, Merseyside, England

[2] Jozef Stefan Inst, Dept Surface Engn & Optoelect, Jamova 39, Ljubljana 1000, Slovenia

[3] Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2016年 / 49卷 / 35期

基金：

英国工程与自然科学研究理事会;

关键词：

surface barrier discharge; atmospheric pressure; non-thermal air plasma; DISCHARGE;

D O I：

10.1088/0022-3727/49/35/355203

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A fully portable atmospheric pressure air plasma system is reported to be suitable for the microbial decontamination of both surfaces and liquids. The device operates in quiescent air, and includes an integrated battery which is charged from a solar cell and weighs less than 750 g, making it highly amenable for a wide variety of applications beyond the laboratory. Using particle imaging velocimetry to visualise air flows around the device, the geometric configuration of the plasma generating electrodes was enhanced to induce a gas flow on the order of 0.5 m s(-1) directed towards a sample placed downstream, thus improving the transport of plasma generated reactive species to the sample. The microbial decontamination efficiency of the system was assessed using potable water samples inoculated with common waterborne organisms Escherichia coli and Pseudomonas fluorescens. The reduction in the number of microorganisms was found to be in the range of 2-8 log and was strongly dependent on the plasma generation conditions.

引用

页数：8

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