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Manipulations of microfluidic droplets using electrorheological carrier fluid

Record type: Article

Electrorheological (ER) fluids are a type of ‘‘smart’’ colloid capable of reversible viscosity variations, or even solidification, in response to an applied electric field. The response time can be as short as a few milliseconds. By using the ER fluid as the carrier fluid in microfluidic chips, we report the generation and manipulation of microdroplets and bubbles via integrated, digitally controlled micro-electrodes equipped with a feedback system. By utilizing the strong electric response of the ER fluid, the flow rate can be easily controlled digitally, thereby making tunable the size of the droplets generated and their separations. In particular, ordering change in a chain of droplets is demonstrated. The maneuverability presented in this paper may have potential applications in a variety of lab chips for chemical reactions, bioassays, as well as microfluidic logic computation.

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Citation

Zhang, Mengying, Wu, Jinbo, Niu, Xize, Wen, Weijia and Sheng, Ping (2008) Manipulations of microfluidic droplets using electrorheological carrier fluid Physical Review E, 78, (6), 066305-[5pp]. (doi:10.1103/PhysRevE.78.066305).

More information

Published date: 9 December 2008
Organisations: Mechatronics

Identifiers

Local EPrints ID: 199893
URI: http://eprints.soton.ac.uk/id/eprint/199893
ISSN: 1539-3755
PURE UUID: ee19898f-78cd-4a53-b449-62585869e08f

Catalogue record

Date deposited: 21 Oct 2011 15:35
Last modified: 18 Jul 2017 11:15

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Contributors

Author: Mengying Zhang
Author: Jinbo Wu
Author: Xize Niu
Author: Weijia Wen
Author: Ping Sheng

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