Production of small powder-stabilized droplets using superhydrophobic mesh

Massive production of tiny droplets is critical for industrial processes and biomedical applications. Such are formed by splitting the bulk liquid (top-down) or condensation to grow droplet (bottom-up). Various generation methods have been reported; however, generated stick contacting substrate and/or coalesce into a larger droplet, limiting handling flexibility size uniformity. Herein, powder-stabilized were massively applying pulse pressure “powdered” superhydrophobic mesh on water pool. The stabilized fine hydrophobic powder, namely, marble, which does not contact materials. effects size, wettability, powdering, applied formation dynamics investigated. depended hydrophilic mesh. When gradually sank pool apply quasi-static hydro-pressure, penetrated did split, continuous large was formed. However, tapping pulsed hydro-pressure induced multiple split through penetration. Without coalesced form droplets. when powdered, coated with powder preventing their coalescence.