Phased Injection of Microparticles in a Paul trap near Atmospheric Pressure
S. Holler, S. Arnold, N. Wotherspoon and A. Korn
Rev.Sci.Inst. 66, 4389(1995)

A method for improving the trapping of microdroplets in a Paul trap in air is introduced. Dynamical simulations demonstrate that injection at an optimal phase relative to the trap cycle facilitates trapping. A circuit is designed for implementing phased injections.