Surface diffuse discharge mechanism of well-aligned atmospheric pressure microplasma arrays

A stable and homogeneous well-aligned air microplasma device for application at atmospheric pressure is designed and its electrical and optical characteristics are investigated. Current-voltage measurements and intensified charge coupled device （ICCD） images show that the well-aligned air microplasm...

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Bibliographic Details
Published inChinese physics B Vol. 25; no. 4; pp. 222 - 230
Main Author 周仁武 周儒森 庄金星 李江炜 陈茂冬 张先徽 刘东平 Kostya （Ken） Ostrikov 杨思泽
Format Journal Article
LanguageEnglish
Published 01.04.2016
Subjects
Arrays
Atmospheric pressure
Barometric pressure
Charge coupled devices
Devices
Electric potential
Inactivation
Microplasmas
均匀放电
大气压等离子体
弥漫性
放电机理
有序排列
生物相容性
等离子体装置
表面等离子体
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/25/4/045202

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Summary:A stable and homogeneous well-aligned air microplasma device for application at atmospheric pressure is designed and its electrical and optical characteristics are investigated. Current-voltage measurements and intensified charge coupled device （ICCD） images show that the well-aligned air microplasma device is able to generate a large-area and homogeneous discharge at the applied voltages ranging from 12 kV to 14 kV, with a repetition frequency of 5 kHz, which is attributed to the diffusion effect of plasma on dielectric surface. Moreover, this well-aligned microplasma device may result in the uniform and large-area surface modification of heat-sensitive PET polymers without damage, such as optimization in hydrophobicity and biocompatibility. In the biomedical field, the utility of this well-aligned microplasma device is further testified. It proves to be very efficient for the large-area and uniform inactivation of E. coli cells with a density of 103/cm2 on LB agar plate culture medium, and inactivation efficiency can reach up to 99% for 2-min treatment.
Bibliography:surface diffusion, intensified charge coupled device, surface modification, bacterial inactivation
11-5639/O4
A stable and homogeneous well-aligned air microplasma device for application at atmospheric pressure is designed and its electrical and optical characteristics are investigated. Current-voltage measurements and intensified charge coupled device （ICCD） images show that the well-aligned air microplasma device is able to generate a large-area and homogeneous discharge at the applied voltages ranging from 12 kV to 14 kV, with a repetition frequency of 5 kHz, which is attributed to the diffusion effect of plasma on dielectric surface. Moreover, this well-aligned microplasma device may result in the uniform and large-area surface modification of heat-sensitive PET polymers without damage, such as optimization in hydrophobicity and biocompatibility. In the biomedical field, the utility of this well-aligned microplasma device is further testified. It proves to be very efficient for the large-area and uniform inactivation of E. coli cells with a density of 103/cm2 on LB agar plate culture medium, and inactivation efficiency can reach up to 99% for 2-min treatment.
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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/25/4/045202