In-flight coating of nanoparticles in atmospheric-pressure DBD torch plasmas
In-flight coating of nanoparticles in atmospheric-pressure DBD torch plasmas
复制标题
在大气压 DBD 炬等离子体中飞行中涂覆纳米粒子
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
U. Kogelschatz
中科院分区：
文献类型：
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作者：
C. Nessim;M. Boulos;U. Kogelschatz
两种DBD火炬设计用于研究小颗粒的涂层和表面功能化。一种在同轴石英管之间有环形放电间隙，第二种适合高通量，在石英管的两侧使用外壳电极。可以在流动方向上使用几个放电段，中间有颗粒和/或单体注入端口。两个火炬都由正弦高压（13千伏，20千赫）操作。同轴焊枪总是呈现出丝状放电，而He的壳电极设计也会产生漫射辉光放电。使用了各种不同的前驱体和电介质以及纳米或微米直径的金属颗粒。
Two DBD torch designs were used to investigate coating and surface functionalization of small particles. One had an annular discharge gap between coaxial quartz tubes, the second, suited for high throughput, used external shell electrodes on opposite sides of a quartz tube. Several discharge sections could be used in flow direction, with intermediate ports for particle and/or monomer injection. Both torches were operated by a sinusoidal high voltage (13 kV, 20 kHz). The coaxial torch always showed a filamentary discharge, while the shell-electrode design in He also produced diffuse glow discharges. A variety of different precursors and dielectric as well as metallic particles of nanometer or micrometer diameter were used.