標題: Highly Effective Large-Area Inactivation of B. subtilis Spore Using a Planar Dielectric Barrier Discharge Jet With CF4/Air Mixture
作者: Yang, Yi-Wei
Wu, Jane-Yii
Chiang, Ming-Hung
Wu, Jong-Shinn
機械工程學系
Department of Mechanical Engineering
關鍵字: Air and B. subtilis spore;atmospheric-pressure plasma (APP);CF4;dielectric barrier discharge (DBD);inactivation;sterilization
公開日期: 1-十一月-2012
摘要: In this paper, we demonstrate that, by adding a small amount of CF4 (2%) into a compressed-air planar dielectric barrier discharge (DBD), one can effectively inactivate a B. subtilis spore up to 50 mm in width in the postdischarge jet region after ten passes of exposure of plasma plume (equivalent plasma exposure time of 1 s) for treatment distance of up to 14 mm for the spore concentration in the range of 10(5)-10(7) CFU/mL. A possible mechanism is proposed, i.e., the chemically active F atoms and CFn (n = 1-3) are generated through the help of abundant excited nitrogen molecules in the postdischarge region.
URI: http://dx.doi.org/10.1109/TPS.2012.2214238
http://hdl.handle.net/11536/20644
ISSN: 0093-3813
DOI: 10.1109/TPS.2012.2214238
期刊: IEEE TRANSACTIONS ON PLASMA SCIENCE
Volume: 40
Issue: 11
起始頁: 3003
結束頁: 3006
顯示於類別:期刊論文


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  1. 000311355100007.pdf