中国物理B ›› 2016, Vol. 25 ›› Issue (4): 45202-045202.doi: 10.1088/1674-1056/25/4/045202

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

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

Ren-Wu Zhou(周仁武), Ru-Sen Zhou(周儒森), Jin-Xing Zhuang(庄金星), Jiang-Wei Li(李江炜), Mao-Dong Chen(陈茂冬), Xian-Hui Zhang(张先徽), Dong-Ping Liu(刘东平), Kostya (Ken) Ostrikov, Si-Ze Yang(杨思泽)   

  1. 1 Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China;
    2 Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;
    3 Xiamen Jueshi Language Training Center, Xiamen 361005, China;
    4 Liaoning Key Laboratory of Optoelectronic Films & Materials, School of Physics and Materials Engineering, Dalian Nationalities University, Dalian 116600, China;
    5 School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4000, Australia;
    6 CSIRO, Materials Science and Engineering, P. O. Box 218, Lindfield, NSW 2070, Australia
  • 收稿日期:2015-11-01 修回日期:2015-12-10 出版日期:2016-04-05 发布日期:2016-04-05
  • 通讯作者: Xian-Hui Zhang E-mail:zhangxh@xmu.edu.cn
  • 基金资助:
    Project 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), and the Fund from the Fujian Provincial Key Laboratory for Plasma and Magnetic Resonance, China.

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

Ren-Wu Zhou(周仁武)1, Ru-Sen Zhou(周儒森)2, Jin-Xing Zhuang(庄金星)3, Jiang-Wei Li(李江炜)1, Mao-Dong Chen(陈茂冬)1, Xian-Hui Zhang(张先徽)1, Dong-Ping Liu(刘东平)1,4, Kostya (Ken) Ostrikov5,6, Si-Ze Yang(杨思泽)1   

  1. 1 Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China;
    2 Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;
    3 Xiamen Jueshi Language Training Center, Xiamen 361005, China;
    4 Liaoning Key Laboratory of Optoelectronic Films & Materials, School of Physics and Materials Engineering, Dalian Nationalities University, Dalian 116600, China;
    5 School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4000, Australia;
    6 CSIRO, Materials Science and Engineering, P. O. Box 218, Lindfield, NSW 2070, Australia
  • Received:2015-11-01 Revised:2015-12-10 Online:2016-04-05 Published:2016-04-05
  • Contact: Xian-Hui Zhang E-mail:zhangxh@xmu.edu.cn
  • Supported by:
    Project 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), and the Fund from the Fujian Provincial Key Laboratory for Plasma and Magnetic Resonance, China.

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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.

关键词: surface diffusion, intensified charge coupled device, surface modification, bacterial inactivation

Abstract: 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.

Key words: surface diffusion, intensified charge coupled device, surface modification, bacterial inactivation

中图分类号:  (Plasma sources)

  • 52.50.Dg
87.80.-y (Biophysical techniques (research methods)) 52.77.-j (Plasma applications)