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Online process control for centrifugal micromixing

Haeberle, S. and Zengerle, R. and Ducrée, Jens (2005) Online process control for centrifugal micromixing. In: TRANSDUCERS 2005 - The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 5-9 June 2005, Seoul, Korea. ISBN 0-7803-8994-8

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Abstract

This paper describes a novel hydrodynamic principle for online process control of flow rate ratios and mixing between two concurrent flows in our recently introduced centrifugal micromixer (Ducree et al., 2003 and Ducree et al., 2004). These flows are contacted in an asymmetric, planar Y-structure on a rotating disk and subsequently driven through a common radial mixing channel. We show that the ratio of the incoming flow rates is statically seeded by the asymmetry of the inlets. The ratio can dynamically be adjusted by the frequency of rotation to realize a feedback process control. Furthermore, a new mechanism of quasi instantaneous mixing is activated by the sense of rotation. The proposed hydrodynamic mechanism is validated by experiments and simulations.

Item Type:Conference or Workshop Item (Paper)
Event Type:Conference
Refereed:Yes
Uncontrolled Keywords:channel flow; hydrodynamics; mixing; process control;
Subjects:Biological Sciences > Microfluidics
DCU Faculties and Centres:Research Initiatives and Centres > Biomedical Diagnostics Institute (BDI)
Published in:TRANSDUCERS 2005 - The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. . Institute of Electrical and Electronics Engineers. ISBN 0-7803-8994-8
Publisher:Institute of Electrical and Electronics Engineers
Official URL:http://dx.doi.org/10.1109/SENSOR.2005.1497374
Copyright Information:©2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ID Code:15473
Deposited On:14 Jul 2010 14:24 by DORAS Administrator. Last Modified 14 Jul 2010 14:24

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