Scalable Generation of Strictly Monodisperse Droplets by Transverse Electrohydrodynamic Excitations
Abbreviated Journal Title
Aerosol Sci. Technol.
LIQUID JET; GROWTH; Engineering, Chemical; Engineering, Mechanical; Environmental Sciences; Meteorology & Atmospheric Sciences
We report a scalable approach to generate strictly monodisperse microdroplets by introducing transverse periodic perturbations on microliquid jets. The fringe field of a thin capacitor, driven by sinusoidal signals, induces periodic electrohydrodynamic (EHD) stress and chops the liquid jet at precise and adjustable intervals. When the driving signal is near the 50% of the Rayleigh frequency, liquid jets exhibit highly ordered breakup. We have shown that for the same jet diameter, the monodispersed droplet diameter can be changed by a factor of 1.75, corresponding to more than five times in change of droplet volume. Further, we demonstrate the scale-up of this approach by chopping multiple jets using a single set of EHD exciters.
Aerosol Science and Technology
"Scalable Generation of Strictly Monodisperse Droplets by Transverse Electrohydrodynamic Excitations" (2013). Faculty Bibliography 2010s. 3915.