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Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/3486

Title: Effect of aerosol particles on DBD plasma discharge
Authors: De-Medonsa, Boaz
Keywords: Electric engineering;Aerosols;Plasma engineering
Issue Date: 3-May-2011
Abstract: Dielectric barrier discharge (DBD) has been proven useful in biological applications for inactivation of microorganisms in numerous occasions by treatment of surfaces and liquids [1-6]. More recently, computational modeling of large aerosols in DBD [7] as well as experimental observation of small aerosols through a DBD mesh [8] have shown that there is a strong interaction that allows for much higher rates of sterilization in air. This thesis explores the mechanism by which the aerosols and plasma interact; specifically, the reason that the treatment time required for bacteria inactivation in air is on the order of milliseconds compared to minutes on surfaces and in liquids. Two mechanisms by which the two interact were investigated; the first being the electrostatic attraction of the charged aerosols to the plasma streamers, and the other being the increased likelihood of streamer formation as a result of induced “memory effect.” [9] The first mechanism is explored analytically and the second experimentally; the results are shown herein.
URI: http://hdl.handle.net/1860/3486
Appears in Collections:Drexel Theses and Dissertations

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