Electrospray

This chapter focuses on some fundamental results of the classical steady cone-jet mode of electrospray. Specifically, we review the scaling laws that allow one to estimate the droplet diameter, electric current, breakup length, and minimum flow rate stability limit. The numerical solution of the leaky-dielectric model enables us to describe the electrospray phenomenon for flow rates relatively close to the minimum value. We present the results of the global stability analysis, paying attention to charge relaxation. The characteristics of coaxial Taylor cone-jets and AC electrospray are also briefly reviewed. Little attention is paid to the electrospinning configuration, which has been nicely reviewed in several works [1, 2].