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Electro-coalescence of digitally controlled droplets

Electro-coalescence of digitally controlled droplets
Electro-coalescence of digitally controlled droplets
In this paper we describe a universal mechanism for merging multiple aqueous microdroplets within a flowing stream consisting of an oil carrier phase. Our approach involves the use of both a pillar array acting as a passive merging element, as well as built-in electrodes acting as an active merging element. The pillar array enables slowing down and trapping of the droplets via the drainage of the oil phase. This brings adjacent droplets into close proximity. At this point, an electric field applied to the electrodes breaks up the thin oil film surrounding the droplets resulting in merging.
0003-2700
7321-7325
Niu, Xize
f3d964fb-23b4-45db-92fe-02426e4e76fa
Gielen, Fabrice
c77341af-6e84-468f-a89e-0dcda0a75139
deMello, Andrew J.
ce9901e2-3de2-4fb8-a816-6917c578c582
Edel, Joshua B.
8397afdd-a0dc-489b-83e8-58a75ca46732
Niu, Xize
f3d964fb-23b4-45db-92fe-02426e4e76fa
Gielen, Fabrice
c77341af-6e84-468f-a89e-0dcda0a75139
deMello, Andrew J.
ce9901e2-3de2-4fb8-a816-6917c578c582
Edel, Joshua B.
8397afdd-a0dc-489b-83e8-58a75ca46732

Niu, Xize, Gielen, Fabrice, deMello, Andrew J. and Edel, Joshua B. (2009) Electro-coalescence of digitally controlled droplets. Analytical Chemistry, 81 (17), 7321-7325. (doi:10.1021/ac901188n).

Record type: Article

Abstract

In this paper we describe a universal mechanism for merging multiple aqueous microdroplets within a flowing stream consisting of an oil carrier phase. Our approach involves the use of both a pillar array acting as a passive merging element, as well as built-in electrodes acting as an active merging element. The pillar array enables slowing down and trapping of the droplets via the drainage of the oil phase. This brings adjacent droplets into close proximity. At this point, an electric field applied to the electrodes breaks up the thin oil film surrounding the droplets resulting in merging.

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More information

e-pub ahead of print date: 21 July 2009
Published date: 1 September 2009
Organisations: Mechatronics

Identifiers

Local EPrints ID: 199887
URI: http://eprints.soton.ac.uk/id/eprint/199887
ISSN: 0003-2700
PURE UUID: 4ff64439-405e-4adc-be58-89fa4598d301

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Date deposited: 21 Oct 2011 15:23
Last modified: 14 Mar 2024 04:18

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Contributors

Author: Xize Niu
Author: Fabrice Gielen
Author: Andrew J. deMello
Author: Joshua B. Edel

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