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In situ and online monitoring of hydrodynamic flow profiles in microfluidic channels based upon microelectrochemistry: concept, theory, and validation.

Amatore, C, Oleinick, A, Klymenko, OV and Svir, I (2005) In situ and online monitoring of hydrodynamic flow profiles in microfluidic channels based upon microelectrochemistry: concept, theory, and validation. Chemphyschem, 6 (8). pp. 1581-1589.

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Abstract

Herein, we propose a method for reconstructing any plausible macroscopic hydrodynamic flow profile occurring locally within a rectangular microfluidic channel. The method is based on experimental currents measured at single or double microband electrodes embedded in one channel wall. A perfectly adequate quasiconformal mapping of spatial coordinates introduced in our previous work [Electrochem. Commun. 2004, 6, 1123] and an exponentially expanding time grid, initially proposed [J. Electroanal. Chem. 2003, 557, 75] in conjunction with the solution of the corresponding variational problem approached by the Ritz method are used for the numerical reconstruction of flow profiles. Herein, the concept of the method is presented and developed theoretically and its validity is tested on the basis of the use of pseudoexperimental currents emulated by simulation of the diffusion-convection problem in a channel flow cell, to which a random Gaussian current noise is added. The flow profiles reconstructed by our method compare successfully with those introduced a priori into the simulations, even when these include significant distortions compared with either classical Poiseuille or electro-osmotic flows.

Item Type: Article
Authors :
NameEmailORCID
Amatore, CUNSPECIFIEDUNSPECIFIED
Oleinick, AUNSPECIFIEDUNSPECIFIED
Klymenko, OVo.klymenko@surrey.ac.ukUNSPECIFIED
Svir, IUNSPECIFIEDUNSPECIFIED
Date : 12 August 2005
Identification Number : 10.1002/cphc.200500129
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:57
Last Modified : 17 May 2017 15:14
URI: http://epubs.surrey.ac.uk/id/eprint/840934

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