Semi-analytical study of meniscus oscillation in an electrospray under AC voltage

In this paper, the oscillation of the meniscus in an electrospray with AC voltage is semi-analytically investigated. The electric field is achieved using the charge simulation method and the mutual interaction between the electric field and hydrodynamics is iteratively explored to investigate the oscillation. After determining the static meniscus shape on a nozzle, the meniscus oscillation is simulated under sinusoidal AC voltage. The semi-analytic simulation can offer the oscillating meniscus shapes and contours of the electric field outside the meniscus according to the applied frequency. Furthermore, the velocity profile of the liquid inside the meniscus is achieved.

► We model semi-analytically oscillation of the meniscus on nozzle in an electrospray. ► The electric field under AC is achieved by the charge simulation method. ► Mutual interaction between the electric field and hydrodynamics is iteratively explored. ► Oscillating meniscus shapes to the applied frequency are achieved.