Plasma–liquid interactions are an important topic in the field of plasma science and technology. The interaction of non-equilibrium plasmas with a liquid have many important applications ranging from environmental remediation to material science and health care.

Reactive oxygen and nitrogen species (RONS), particularly hydrogen peroxide (H₂O₂), and nitrate ions, can be generated though plasma-liquid interactions. RONS generated by plasma have many potential applications in areas such as biomedicine, nanoscience,, and agriculture. Various discharge setups, including electrodes immersed in liquid and/or above liquid, and their effect on hydrogen peroxide yield have previously been examined. This project focuses on studying the physics of these discharges and the plasma-induced chemistry to determine the underlying mechanisms involved in various applications.

The reactor geometries can be sorted into 3 categories:

• Direct discharges created in liquids,
• Discharges created in the gas phase over a liquid,
• Discharges in multiphase environments such as discharges in bubbles inside liquids.

The complex and highly dynamic plasma–liquid interface provides challenging, fundamental and interesting scientific questions. The research will lead to an increased understanding of these plasma discharges and will enable us to tackle many societal challenges related to energy, environment and health.