Fundamentals and Applications of Solution Plasma

Liquid-phase plasma is not well known compared with gas-phase plasma. We name the liquid-phase plasma "solution plasma" because of the generation of different plasmas by choosing the combinations of solvents and solutes in solutions. We can generate a glow discharge with a pulsed power generator by controlling several parameters for the ignition of the discharge. It is important to generate the glow discharge in solutions, which realizes the formation of a new reaction field at almost room temperature. We measured the basic physical and chemical properties of solution plasma by time-resolved optical spectroscopy and coherent ant-Stokes Raman spectroscopy (CARS). The solution plasma is applicable to nanomaterials synthesis, surface modifications, water treatment, sterilization, decomposition of cellulose and toxic compounds, and so far.