Janus Charged Droplet Manipulation Mediated by Invisible Charge Walls.

ABSTRACT: The ability to control the mobility and function of droplets is fundamental to developing open surface microfluidics. Despite notable progress in the manipulation of droplets, the existing strategies are still limited in functionalizing droplets. Herein, the coupling of droplet motion and functionalization elicited by an invisible charge wall is reported. The charged superamphiphobic surface is overlapped with a conductor to induce free charge, creating the invisible charge wall at the overlapping boundary. The charge wall can trap droplets and polarize them into Janus charged state. It is found that the trapping degree and the charge distribution in the Janus charged droplet depend on the original surface charge on the superamphiphobic surface. The invisible charge wall can also be establ

SUBMITTER: Sun Q 

PROVIDER: S-EPMC9685436 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature