中文摘要：

针对低温等离子体处理人体皮肤和组织等生物医学应用中开发人体可接触低温等离子体源的需求,本文设计了一种灵活的悬浮电极结构的介质阻挡放电低温等离子体发生装置,来在空气中产生人体可接触的低温等离子体。通过合理的选择绝缘外套来实现手持灵活移动电极,通过合理选择阻挡介质来限制放电电流,实现人体安全接触。本文通过电气和光学特性诊断研究了所设计装置的放电特性,在进行人体接触试验基础上,建立了装置的等效电路模型,来对人体接触的安全性进行论证。结果表明,所设计的电极结构灵活安全,人体可以安全接触,当外加电压在低于5 kV且气隙间距为0.5 mm时,消耗的放电功率小于0.5W,传输电荷小于50nC,放电电流幅值小于10 mA。等效电路模型分析结果表明,当外加电压4 kV至6 kV,且气隙间距小于1 mm时,流过人体的工作电流不超过3.82 mA。

英文摘要：

A novel source of dielectric barrier discharge（DBD） plasma,with a floating electrode and easily opcrated for dermatology clinic, was developed. The original work included a safely insulated high voltage electrode and an optimized quartz-disk as the dielectric barrier for discharge current control. The properties of the low temperature plasma,generated by the novel DBD plasma source,were experimentally evaluated and theoretically calculated. The measured results show that the plasma works well in medicine with no harm to human skins and/or tissues. For example,operated at a voltage 〈5 kV and a power 〈 0.5 W with an air-gap ofO. 5 ram,the discharge current and charge transport were less than 10mA and 50nC,respectively. The calculated results show that at a voltage in 4 - 6 kV with a gap of 1.0 mm,the current through human body （ 〈 3.82 mA） is well below the satety limit.