標題: Atomic Oxygen and Hydroxyl Radical Generation in Round Helium-Based Atmospheric-Pressure Plasma Jets by Various Electrode Arrangements and Its Application in Sterilizing Streptococcus mutans
作者: Liu, Chih-Tung
Wu, Ching-Jung
Yang, Yi-Wei
Lin, Zhi-Hua
Wu, Jong-Shinn
Hsiao, Shun-Chung
Lin, Chun-Pin
機械工程學系
Department of Mechanical Engineering
關鍵字: Atmospheric-pressure plasma;dental sterilization;discharge gap;electrodes arrangement;plasma medicine
公開日期: 1-十二月-2014
摘要: The reactive chemical species generated in an atmospheric-pressure plasma jet (APPJ), such as hydroxyl radical and atomic oxygen, are generally regarded as the major sources for several biomedical applications. In this paper, we propose an APPJ with a 25-kHz high-voltage powered stainless steel tube fixed inside a quartz tube and an aluminum grounded electrode that is wrapped around the quartz tube. The results show that the radical intensities of atomic oxygen and hydroxyl radical, gas temperature, and power absorption increase with increasing distance of discharge gap distance under the same applied voltage. Increasing the width of grounded electrode increases gas temperature and causes higher power absorption but only slight change of radical generation. We have applied the APPJ with the conditions of highest radical generation (grounded electrode width = discharge gap distance = 15 mm) for effectively sterilizing Streptococcus mutans within 15 s, which shows a highly potential application for root canal disinfection.
URI: http://dx.doi.org/10.1109/TPS.2014.2345096
http://hdl.handle.net/11536/124108
ISSN: 0093-3813
DOI: 10.1109/TPS.2014.2345096
期刊: IEEE TRANSACTIONS ON PLASMA SCIENCE
Volume: 42
Issue: 12
起始頁: 3830
結束頁: 3836
顯示於類別:期刊論文


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