Control of two-phase flow in a microfluidic system using ac electric fields.
Control of two-phase flow in a microfluidic system using ac electric fields.
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.
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Ramos, Antonio
511ab594-f312-45ce-b7ff-ef348fd9b559
Garcia-Sanchez, Pablo
11cec08e-0384-4ef6-a1b3-183c9b32c4ea
December 2007
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Ramos, Antonio
511ab594-f312-45ce-b7ff-ef348fd9b559
Garcia-Sanchez, Pablo
11cec08e-0384-4ef6-a1b3-183c9b32c4ea
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).
Abstract
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.
Text
J44_Morgan_Green_Ramos_Garcia-Sanchez_Applied_Physics_Letters_2007.pdf
- Other
More information
Published date: December 2007
Organisations:
Electronics & Computer Science
Identifiers
Local EPrints ID: 266504
URI: http://eprints.soton.ac.uk/id/eprint/266504
ISSN: 0003-6951
PURE UUID: 7d86c1dc-c548-43aa-9670-b5880a552883
Catalogue record
Date deposited: 04 Aug 2008 03:24
Last modified: 15 Mar 2024 03:20
Export record
Altmetrics
Contributors
Author:
Hywel Morgan
Author:
Nicolas G Green
Author:
Antonio Ramos
Author:
Pablo Garcia-Sanchez
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics