Issue 37, 2020

Electrohydrodynamics of droplets and jets in multiphase microsystems

Abstract

Electrohydrodynamics is among the most promising techniques for manipulating liquids in microsystems. The electric stress actuates, generates, and coalesces droplets of small sizes; it also accelerates, focuses, and controls the motion of fine jets. In this review, the current understanding of dynamic regimes of electrically driven drops and jets in multiphase microsystems is summarized. The experimental description and underlying mechanism of force interplay and instabilities are discussed. Conditions for controlled transitions among different regimes are also provided. Emerging new phenomena either due to special interfacial properties or geometric confinement are emphasized, and simple scaling arguments proposed in the literature are introduced. The review provides useful perspectives for investigations involving electrically driven droplets and jets.

Graphical abstract: Electrohydrodynamics of droplets and jets in multiphase microsystems

Article information

Article type
Review Article
Submitted
25 Jul 2020
Accepted
14 Aug 2020
First published
17 Aug 2020

Soft Matter, 2020,16, 8526-8546

Electrohydrodynamics of droplets and jets in multiphase microsystems

C. Qi, Y. Li, Z. Liu and T. Kong, Soft Matter, 2020, 16, 8526 DOI: 10.1039/D0SM01357A

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