Electrostatic Scavenging of Submicron Particles Aided by the Hydrodynamic Effect of Particle Vibration

Abstract

A highly charged particle of a few micrometers in radius is strongly vibrated to induce a secondary flow around the particle. The flow brings submicron particles to the space around the charged particle where the electrostatic gradient force becomes strong enough to adsorb the submicron particles on the charged particle. The experimental result shows that the electostatic scavenging rate is greatly enhanced by the hydrodynamic effect.