Figure 2

Schematic diagram of the well-aligned air microplasma jet array operating at atmospheric pressure.

Top view of the microplasma device (a) and cross-sectional view of single-discharge system without TiO₂ (SD) (b), SD system with a circular TiO₂ film (CTD) (c), and SD system with a plate-like TiO₂ film (PTD) (d).