Trampolining of Droplets on Hydrophobic Surfaces Using Electrowetting.

ABSTRACT: Droplet detachment from solid surfaces is an essential part of many industrial processes. Electrowetting is a versatile tool for handling droplets in digital microfluidics, not only on plain surface but also in 3-D manner. Here, we report for the first time droplet trampolining using electrowetting. With the information collected by the real-time capacitor sensing system, we are able to synchronize the actuation signal with the spreading of the droplet upon impacting. Since electrowetting is applied each time the droplet impacts the substrate and switched off during recoiling of the droplet, the droplet gains additional momentum upon each impact and is able to jump higher during successive detachment. We have modelled the droplet trampolining behavior with a periodically driven harmonic os

SUBMITTER: Wang Z 

PROVIDER: S-EPMC8953513 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature