Fig. 1: Ferroelectric barrier discharge.
From: Enhanced production of active species and NH3 using non-equilibrium ferroelectric barrier discharge
a Cell design. Two plate electrodes are placed in parallel. Because of the enlarged electric field and increasing density of electrons induced by the large surface charge from ferroelectric material, more active species, including radicals and excited molecules, are produced in plasma (Colored spheres denote different species; sizes and separations are not to scale, and the arrangement is illustrative rather than a crystallographic structure). b, c X-ray diffraction patterns of the lead zirconate titanate (PZT) plate and alumina plate, respectively, used in this work. Good consistency with database lines confirms the high purity and good crystallinity of the materials. d–f Surface charge measurements in (d) pure N2, (e) 25%N2/75%H2 and (f) pure H2 (Shaded band: min–max envelope across 10 measured cycles). The maximum surface charges (Q) of FBD are higher than those of Al2O3 DBD. The Q (Ucell) plot is directly measured by placing a reference capacitor in series with the plasma reactor.
