https://scholars.lib.ntu.edu.tw/handle/123456789/409104
標題: | Plasmas in saline solutions sustained using rectified ac voltages: Polarity and frequency effects on the discharge behaviour | 作者: | Chang H.-W. Hsu C.-C. |
公開日期: | 2012 | 卷: | 45 | 期: | 25 | 來源出版物: | Journal of Physics D: Applied Physics | 摘要: | In this work, three major problems, namely severe electrode damage, poor plasma stability and excess power consumption, arising in ac-driven plasmas in saline solutions are solved using a rectified power source. Diagnostic studies on the effects of power source polarity and frequency on the plasma behaviour are performed. Examination of IV characteristics and temporally resolved light emission shows that the polarity significantly influences the current amplitude when the plasma exists, while the frequency alters the bubble dynamics, which in turn affects the plasma ignition voltage. When the plasma is driven by a rectified ac power source, the electrode erosion is reduced substantially. With a low frequency, moderate applied voltage and positively rectified ac power source (e.g. 100Hz and 350V), a stable plasma is ignited in nearly every power cycle. ? 2012 IOP Publishing Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/409104 | ISSN: | 00223727 | DOI: | 10.1088/0022-3727/45/25/255203 |
顯示於: | 化學工程學系 |
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