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
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)
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
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.
中图分类号: (Plasma sources)