A mathematical model for the motion analysis of embedded straight microcantilevers under a pressure driven flow


Ezkeera, A., Wilson, P.A., Mayora, K. and Ruano-López, J.M. (2008) A mathematical model for the motion analysis of embedded straight microcantilevers under a pressure driven flow. Journal of Micromechanics and Microengineering, 18, (8), 1-12. (doi:10.1088/0960-1317/18/9/095011).

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Description/Abstract

The empirical optimisation of a cantilever design for microfluidic control applications is a time consuming process that requires considerable testing. The use of finite element analysis tools is a
common alternative to determine the effect of each design parameter. However, the prediction of the motion of an embedded cantilever within a microfluidic channel is a very complex problem. The coupled geometrical and fluidic variables make the simulation difficult using these tools. In this paper,
a mathematical model is presented that couples the geometrical and fluidic features of the system. Therefore, it allows the determination of the way and extent to which each design parameter should be modified in order to achieve the desired performance. To the knowledge of the authors, this is the first
example of a mathematical model that explains the motion and forces acting on a cantilever embedded in a microchannel. Furthermore, it does not require specific knowledge of the flow conditions in the vicinity of the structure, which improves its practical use during the early stages of design. Predictions
have been made for two straight cantilevers under a range of pressures and compared against measurements obtained in Part I of this article. The results obtained show very good agreement with real measurements from experiments.

Item Type: Article
ISSNs: 0960-1317 (print)
Keywords: microfluidic controllers embedded sensors
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Fluid-Structure Interactions
ePrint ID: 58032
Date Deposited: 19 Aug 2008
Last Modified: 27 Mar 2014 18:40
URI: http://eprints.soton.ac.uk/id/eprint/58032

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