Abstract
The rapid advances in the field of cold plasma research led to the development of many plasma jets for various purposes. The COST plasma jet was created to set a comparison standard between different groups in Europe and the world. Its physical and chemical properties are well studied, and diagnostics procedures are developed and benchmarked using this jet. In recent years, it has been used for various research purposes. Here, we present a brief overview of the reported applications of the COST plasma jet. Additionally, we discuss the chemistry of the plasma-liquid systems with this plasma jet, and the properties that make it an indispensable system for plasma research.
Highlights
Among the various types of plasma, non-thermal atmospheric pressure plasma (CAP)is perhaps the most burgeoning field [1,2]
This results in high densities of O atoms in the area of the immediate contact of the plasma effluent with the surface, and radially on the surrounding thin film, making the Cooperation for Science and Technology (COST) jet a useful tool in studying the surface processes occurring during cold atmospheric pressure plasma (CAP) etching [28]
The ability of the COST jet to selectively produce reactive oxygen and nitrogen species (RONS) under specific conditions is what extends its applicability beyond being a standard reference plasma jet, and makes it an extremely useful tool for CAP-related investigations
Summary
Among the various types of plasma, non-thermal (or ‘cold’) atmospheric pressure plasma (CAP). APPJs in many cases have a minimised electrical impact during plasma treatment, while at the same time facilitating targeted delivery of the biologically active reactive oxygen and nitrogen species (RONS) due to the flow of gas These RONS comprise long-lived ones (molecules and ions) and short-lived ones (radicals and atoms), and define the potential of CAPs in (among others) biomedical applications [8,9]. The evolution of the equilibrium throughout the complete plasma channel can be investigated and surveyed for the COST jet due to the direct optical access through the quartz panes We note that these parameters and design features are based on results from the thoroughly investigated predecessor—the μ-APPJ. The combined measurement of the current, voltage and phase allows the measurement of the power input into the electrode stack. We refer to both as ‘the COST jet’ to maintain clarity
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