Piezoelectric Direct Discharge

Dear Colleagues,

Piezoelectric transformers (PT) have been broadly used to generate high-voltage applied to produce low-pressure plasmas (i.e., back-light discharge lamps for LCD displays), among other applications. The recent progress in PT technology made it possible to produce an atmospheric pressure plasma directly at the high-voltage surface of the PT without the use of an output electrode. This type of discharge is called piezoelectric direct discharge (PDD). Either air or various gas mixtures can be used as ionization gas. For PDD production, multilayer Rosen-type resonant PTs with voltage amplification on the order of magnitude of 1000 are used. Despite of some common properties with corona discharge and dielectric barrier discharge (DBD), the ignition of micro-discharges directly at the ceramic surface makes PDD unique in physics and application potential. Many types and geometries of PDD are already known.

This Special Issue of Plasma responds to an increasing interest in PDD and its applications. We welcome contributions dealing with the physics, technology, and diagnostics of PDD. Recently, a growing number of novel PDD applications in very different fields (surface engineering, medicine, dentistry, food science, and many others) have been published. We encourage researchers using PDD in any scientific field to contribute to this Special Issue.

Dr. Dariusz Z. Korzec
Guest Editor

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