Droplet Actuation In An Electrified Microfluidic Network

Abstract

This work demonstrates that liquid droplet emulsions in a microchannel can be deformed, decelerated and/or pinned by applying a suitable electrical potential. By concentrating a potential gradient at the corners, we show that different droplets can be passively binned by size and on demand in a branched microfluidic device. The deformation, deceleration, squeezing and release of droplets in a three-dimensional numerical simulation are qualitatively verified by experiments in a PDMS microfluidic device. The forces required for pinning or binning a droplet provide a delicate balance between hydrodynamics and the electric field, and are obtained using appropriate non-dimensional parameters.

Publication Date

2-7-2015

Publication Title

Lab on a Chip

Volume

15

Issue

3

Number of Pages

793-801

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1039/c4lc00934g

Socpus ID

84921698061 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84921698061

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