Microfabricated high density multiplexed electrospray

Abstract

We present the fabrication, assembly, and testing of novel compact fuel atomization devices for portable power systems. Silicon multiplexed electrospray devices with nozzle densities >11,500 nozzles/cm2 are demonstrated for the first time exhibiting liquid fluxes >400 mL/hour/cm2 with droplet diameters <5 µm. Compared to prior electrospray devices, these results represent a 40x increase in nozzle density and a 50% reduction in driving voltage and droplet diameter enabling more efficient small-scale combustion.