Disinfection of E. coli by nonthermal microplasma electrolysis in normal saline solution

Yukinori Sakiyama; Takaaki Tomai; Masaru Miyano; David B. Graves

doi:10.1063/1.3122148

Disinfection of E. coli by nonthermal microplasma electrolysis in normal saline solution

Yukinori Sakiyama, Takaaki Tomai, Masaru Miyano, David B. Graves

Research output: Contribution to journal › Article › peer-review

61 Scopus citations

Abstract

We present a unique method to inactivate microorganisms in 0.9% NaCl solution (normal saline solution) by means of microplasmas. The device consists of a thin titanium wire covered by a glass tube for insulation except the tip and a ground electrode. Application of an asymmetric high-frequency, high voltage results in the formation of microbubbles at both electrodes. Repetitive light emission is observed in the vicinity of the powered electrode. We employed E. coli bacteria to investigate the disinfection efficiency of the device. More than 99.5% of E. coli were deactivated in 180 s. The survival curve showed biphasic behavior.

Original language	English (US)
Article number	161501
Journal	Applied Physics Letters
Volume	94
Issue number	16
DOIs	https://doi.org/10.1063/1.3122148
State	Published - 2009
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3122148

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title = "Disinfection of E. coli by nonthermal microplasma electrolysis in normal saline solution",

abstract = "We present a unique method to inactivate microorganisms in 0.9% NaCl solution (normal saline solution) by means of microplasmas. The device consists of a thin titanium wire covered by a glass tube for insulation except the tip and a ground electrode. Application of an asymmetric high-frequency, high voltage results in the formation of microbubbles at both electrodes. Repetitive light emission is observed in the vicinity of the powered electrode. We employed E. coli bacteria to investigate the disinfection efficiency of the device. More than 99.5% of E. coli were deactivated in 180 s. The survival curve showed biphasic behavior.",

author = "Yukinori Sakiyama and Takaaki Tomai and Masaru Miyano and Graves, {David B.}",

note = "Funding Information: The authors would like to thank Professor A. Majumdar of the Department of Mechanical Engineering, University of California at Berkeley, and Professor K. Kitano of the Center for Atomic and Molecular Technologies, Osaka University. T.T. is supported by Grants-in-Aid for the Research Fellowships for Young Scientists from the Japan Society for the Promotion of Science.",

year = "2009",

doi = "10.1063/1.3122148",

language = "English (US)",

volume = "94",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Disinfection of E. coli by nonthermal microplasma electrolysis in normal saline solution

AU - Sakiyama, Yukinori

AU - Tomai, Takaaki

AU - Miyano, Masaru

AU - Graves, David B.

N1 - Funding Information: The authors would like to thank Professor A. Majumdar of the Department of Mechanical Engineering, University of California at Berkeley, and Professor K. Kitano of the Center for Atomic and Molecular Technologies, Osaka University. T.T. is supported by Grants-in-Aid for the Research Fellowships for Young Scientists from the Japan Society for the Promotion of Science.

PY - 2009

Y1 - 2009

N2 - We present a unique method to inactivate microorganisms in 0.9% NaCl solution (normal saline solution) by means of microplasmas. The device consists of a thin titanium wire covered by a glass tube for insulation except the tip and a ground electrode. Application of an asymmetric high-frequency, high voltage results in the formation of microbubbles at both electrodes. Repetitive light emission is observed in the vicinity of the powered electrode. We employed E. coli bacteria to investigate the disinfection efficiency of the device. More than 99.5% of E. coli were deactivated in 180 s. The survival curve showed biphasic behavior.

AB - We present a unique method to inactivate microorganisms in 0.9% NaCl solution (normal saline solution) by means of microplasmas. The device consists of a thin titanium wire covered by a glass tube for insulation except the tip and a ground electrode. Application of an asymmetric high-frequency, high voltage results in the formation of microbubbles at both electrodes. Repetitive light emission is observed in the vicinity of the powered electrode. We employed E. coli bacteria to investigate the disinfection efficiency of the device. More than 99.5% of E. coli were deactivated in 180 s. The survival curve showed biphasic behavior.

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ER -

Disinfection of E. coli by nonthermal microplasma electrolysis in normal saline solution

Abstract

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