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Hydrophilic modification of polymethyl methacrylate (PMMA) surface is performed by atmospheric pressure plasma jet (APPJ) in Ar gas for improving the PMMA surface flashover performance in vacuum. In the experiments, APPJ is driven by a microsecond-duration pulsed generator, which has voltages of 0-30 kV, a rise time of 300 ns and a full width at half maximum of 2μs. Characteristics of the APPJ are...
Cold atmospheric-pressure plasma is rich in active particles, with good physical and chemical properties. It has a wide range of applications in areas such as surface modification of materials, and biomedical and environmental treatment. A dielectric barrier discharge is a traditional way to generate cold plasma, but its confined discharge gap limits some applications. The plasma jet is a method to...
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