大气压低温等离子体射流离化波在生物介质表面传输研究

项目名称： 大气压低温等离子体射流离化波在生物介质表面传输研究

项目编号： No.11505025

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 季龙飞

作者单位： 大连民族大学

项目金额： 23万元

中文摘要： 大气压低温等离子射流具有产生活性物种丰富、操作简单、放电气体温度接近室温等特点，在生物杀菌与材料表面改性等应用领域展现出其特有的优势，其表面作用机理受到专家学者们的重点关注。本项目通过直流脉冲电源驱动射流等离子体源产生大气压高密度均匀放电等离子体，研究等离子体形成离化波与材料表面的作用机制。利用电压探测技术、电流探测技术、ICCD快速成像技术等技术手段，实现等离子体离化波电流密度诊断研究，分析等离子体离化波与材料表面相互作用的电学特性，建立离化波作用材料表面动力学模型。利用发射光谱、时间空间分辨技术，研究放电参数、电极结构、气体成分等要素对等离子体离化波传输特性和放电活性物种时间空间分布规律的影响，分析离化波产生活性物种与材料表面间作用的物理化学过程，并分析其在杀菌消毒应用中的作用机制，为等离子体医疗器械表面杀菌消毒等设备的研发提供理论基础和技术指导。

中文关键词： 发射光谱；吸收光谱；时间分辨光谱；空间分辨光谱

英文摘要： Atmospheric pressure non-equilibrium plasmas have been widely studied for bacterial inactivation and material modification applications due to its unique advantages, such as abundant active species, flexible operation and low gas temperature. In this project, atmospheric pressure high density diffuse discharge plasma is driven by a nanosecond pulse power source. The interaction mechanism between the plasma generated ionization wave and material surface. The current density of ionization wave is obtained using voltage and current measurement technology and ICCD fast imaging technology. The electric characteristics of interactions between ionization wave and material surface are systematically analyzed and the dynamical model of the interactions between ionization wave and material surface is built. The effects of discharge parameters, electrode structure, gas composition on the transmission characteristic of ionization wave and the time and space distribution of plasma generated reactive species will be studied using time and space resolved emission spectra. The physical and chemical processes between the reactive species and material surface will be determined. And the sterilization mechanism resulted by the plasma generated reactive species will be achieved. The theoretical reference and technical guidance would be provided a clue to optimize the design of plasma medical equipments.

英文关键词： Emission spectrum;Absorption spectrum;Time resolved spectrum;Spatial resolution spectrum