Large-Scale Cold Plasma Source Design

Cold Plasma treatment of surfaces has a wide array of applications in fields such as materials science and biomedical engineering, among others. A common limitation of atmospheric pressure cold plasma jets is the size of the treated region, which can limit uniformity and scalability of treatment for both characterization and applications. This is a challenge that previous studies have sought to address. We have developed a novel plasma jet design that functions by distributing gas throughout a very thin manifold separating a high-voltage and ground electrode. The ground electrode is a tight metal mesh that allows for the generated plasma to diffuse through it from the potential gap to the sample. This design enables the generation of uniform plasma across an eight-centimeter-diameter circular region, offering a simple and affordable option for large-scale uniform plasma treatment with a wide array of potential applications. We present the design and initial investigation into the function of the new source.