Understanding Microplasmas

TL;DR

This paper reviews recent advances in the diagnostics and simulation of microplasmas, focusing on a helium/oxygen plasma jet in ambient air, highlighting their unique non-equilibrium properties and diverse applications.

Contribution

It provides a comprehensive overview of recent diagnostic and simulation techniques applied to microplasmas, emphasizing system-wide understanding from gas flow to plasma-sample interactions.

Findings

Enhanced understanding of microplasma non-equilibrium characteristics

Development of integrated diagnostic and simulation methods

Insights into plasma jet behavior in ambient air

Abstract

Microplasmas are operated around atmospheric pressure exhibiting pronounced non-equilibrium characteristics, i.e. they possess energetic electrons while ions and neutrals remain cold. They have gained significant interest due to their enormous application potential e.g. in the biomedical, surface modification and light source areas, just to name a few. Many different configurations are in use. Their understanding and quantification is mandatory for further progress in applications. We report on recent progress in the diagnostics and simulation of the entire microplasma system from gas introduction, via the plasma discharge up to the samples at the example of a plasma jet operated in He/O2 in an ambient air environment.