大气压冷等离子体射流双频增强与调制的实现方法和作用机理研究

项目名称： 大气压冷等离子体射流双频增强与调制的实现方法和作用机理研究

项目编号： No.51207079

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电气科学与工程学科

项目作者： 聂秋月

作者单位： 清华大学

项目金额： 25万元

中文摘要： 大气压冷等离子体射流在材料加工与改性、器械表面消洗、生物组织结构与功能恢复、微生物诱变育种等领域都表现出了独特的技术优势和良好的应用前景。双频增强与调制技术为大气压冷等离子体射流源提供了更多的控制与优化关键等离子体参数（如电子密度、活性物种浓度、射流作用范围、气体温度等）的手段，特别是为其参数独立控制提供了可能，是一种正处于探索发展中的创新性技术。本项目拟对大气压冷等离子体射流双频增强与调制的功率源施加方法和双频作用机理开展深入、系统的研究。通过系统地考察双频施加方式归纳总结施加双频功率源的基本原则；通过全面的诊断工作了解不同双频施加方式下大气压冷等离子体射流的产生及演化过程，获得双频增强与调制技术对重要等离子体参数的影响规律；进而总结大气压冷等离子体射流双频增强与调制的一般实现方法，为进一步研究及应用奠定基础。

中文关键词： 大气压冷等离子体射流；双频增强与调制；等离子体参数独立控制；数值仿真；实验诊断

英文摘要： The cold plasma jet generated in atmospheric pressure discharges has been identified as a unique and promising technology for a number of important industrial and medical applications, such as processing and modification of materials, cleaning and disinfection of instruments, structure or function resumption of biological tissues, and gene mutation breeding of microbes etc. The modulation technology with dual-frequency can effectively enhance plasma properties of atmospheric pressure cold plasma jets (i.e. electron density, reactive chemical species density, jet length, gas temperature), and provide a possible approach to control the basic plasma parameters separately. We thus propose to further study the modulation strategy and mechanism of atmospheric pressure cold plasma jets driven by duel-frequency excitations. Firstly, the effective methods to apply dual-frequency excitations will be studied and selected. On the basis, the interaction between the influences of the two frequency excitations will be investigated by means of the electrical and spectroscopic diagnosis. And the basic strategy for the modulation method will be acquired. The proposed project is very important for the deep understanding of the duel-frequency modulated atmospheric pressure cold plasma jets as well as the promotion of the associated

英文关键词： atmospheric pressure cold plasma jet；dual-frequency modulation technology；separate control of plasma parameters；numerical simulation；experimental diagnosis