Abstract: Presently disclosed subject matter relates to application of dielectric barrier discharge in misty plasma systems for disinfection of surfaces and equipment in health settings. A system and corresponding and/or associated methodology is provided for planar dielectric barrier discharge (DBD) device technology. Per one exemplary embodiment, a DBD device is provided with an electrically insulated annular flow channel built through the planar powered electrode. The discharge medium is air saturated with water vapor that flows through the annulus and forms a stagnation discharge plane between the powered dielectric and the substrate. Application on Escherichia (E.) coli and Bacillus (B.) atrophaeus spores on agar and filter papers show that usage of a flowing humid discharge medium has a ˜40% higher efficacy than either a static or a dry flowing medium. The substrate turns acidic potentially due to the formation of reactive oxygen and nitrogen species.

Abstract: The disclosure deals with system/apparatus and corresponding and/or associated method for an open plasma reactor assembly provided to study pulsed reactive species produced in a dielectric barrier discharge (DBD) in He—H2O and He—H2O—O2 mixture in atmospheric conditions using photo fragmentation laser-induced fluorescence (PFLIF). The objective is to detect and quantify hydroxyl radicals and hydrogen peroxide produced in the DBD. An OH laser-induced fluorescence (LIF) signal is acquired from LIF (using 282 nm laser) whereas LIF from OH generated from H2O2 is measured by from the PFLIF signal (using 213 nm+ 282 nm lasers). A known concentration of H2O2 in He serves to calibrate for H2O2 while the OH is calibrated with a chemical model. For both gas mixtures, there is both OH and H2O2 production in the discharge, while the H2O2 concentration was noticeably increased for the added O2 case.

Abstract: A dielectric barrier discharge system, employed to reform/remove organosilicon contaminants off a carrier stream to provide a sustainable, end-of-technology way of siloxane removal that will ensure siloxane does not re-enter the carrier stream, as well as generates useful end-products.