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

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

作     者: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 

作者机构:Fujian Key Laboratory for Plasma and Magnetic Resonance School of Physics and Mechanical & Electrical Engineering Xiamen University Xiamen 361005 China Department of Chemical and Biochemical Engineering College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China Xiamen Jueshi Language Training Center Xiamen 361005 China Liaoning Key Laboratory of Optoelectronic Films & Materials School of Physics and Materials Engineering Dalian Nationalities University Dalian 116600 China School of Chemistry Physics and Mechanical Engineering Queensland University of Technology Brisbane Queensland 4000 Australia CSIRO Materials Science and Engineering P. O. Box 218 Lindfield NSW 2070 Australia 

出 版 物:《Chinese Physics B》 (中国物理B(英文版))

年 卷 期:2016年第25卷第4期

页      面:222-230页

核心收录:

学科分类:07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基  金:supported by the Natural Science Foundation of Fujian Province,China(Grant No.2014J01025) the National Natural Science Foundation of China(Grant No.11275261) the Natural Science Foundation of Guangdong Province,China(Grant No.2015A030313005) the Fund from the Fujian Provincia Key Laboratory for Plasma and Magnetic Resonance,China 

主  题:surface diffusion intensified charge coupled device surface modification bacterial inactivation 

摘      要: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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