Electrostatic spray-assisted vapour deposition
Electrostatic spray-assisted vapour deposition (ESAVD) is a technique (developed by a company called IMPT) to deposit both thin and thick layers of a coating onto various substrates. In simple terms chemical precursors are sprayed across an electrostatic field towards a heated substrate, the chemicals undergo a controlled chemical reaction and are deposited on the substrate as the required coating.
Source: Wikipedia — Electrostatic spray-assisted vapour deposition (CC BY-SA 4.0)