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Control of two-phase flow in a microfluidic system using ac electric fields.

Morgan, Hywel, Green, Nicolas G, Ramos, Antonio and Garcia-Sanchez, Pablo (2007) Control of two-phase flow in a microfluidic system using ac electric fields. Applied Physics Letters, 91 (doi:10.1063/1.2825835).

Record type: Article


The control and handling of fluids are central to many applications of the lab on chip. We report how alternating current (ac) electric fields can deflect and manipulate coflowing streams of two different electrolytes within a microfluidic channel. The two different electrolytes flow side by side over an array of interdigitated electrodes which occupies the width of the channel. Application of a 20 V (peak to peak) voltage at 1 MHz to the electrodes causes the liquid with higher conductivity to occupy a larger region of the channel. This effect causes a significant displacement of the boundary between the two fluids.

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Published date: December 2007
Organisations: Electronics & Computer Science


Local EPrints ID: 266504
ISSN: 0003-6951
PURE UUID: 7d86c1dc-c548-43aa-9670-b5880a552883
ORCID for Hywel Morgan: ORCID iD
ORCID for Nicolas G Green: ORCID iD

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Date deposited: 04 Aug 2008 03:24
Last modified: 18 Jul 2017 07:15

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Author: Hywel Morgan ORCID iD
Author: Nicolas G Green ORCID iD
Author: Antonio Ramos
Author: Pablo Garcia-Sanchez

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