Numerical investigation of gas-plasma phase inside a bubble immersed in a liquid

Atmospheric micro-discharges are promising applications for nanotechnology, water treatment, agriculture, medicine, or hydrogen generation, due to their ignition at atmospheric pressure, and possible interaction with the other states of matter. Moreover, the plasma behavior in presence of a liquid electrode introduces new physical properties - such as, the nucleation of micro- and nano-bubbles inside the liquid interface, which are of great interest. Hence, the plasma physics of liquids has been extensively studied due to different physical and chemical interactions between liquid bulk and plasma. The focus of the poster will be the plasma formation inside a μ-bubble immersed in the liquid bulk, as a medium, for the plasma-liquid interactions. A numerical multiphysics approach is being adopted to simulate the plasma processes in the dielectric liquid; in addition, an experimental study will characterize the interface region and gas/plasma properties.