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Estimation of inhomogeneous zeta potential using velocity measurements of EOF
Author(s) -
Park Hung Mok,
Lee Jun Suk
Publication year - 2007
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.200600665
Subject(s) - conjugate gradient method , inverse problem , zeta potential , distribution (mathematics) , inverse , minification , function (biology) , mathematics , mathematical analysis , mathematical optimization , physics , geometry , nanoparticle , quantum mechanics , evolutionary biology , biology
We have developed a method of estimating the zeta potential distribution along the microchannel wall using velocity measurements of the EOF. The relevant inverse problem is solved through the minimization of a performance function utilizing the conjugate gradient method. Employing a set of simulated velocity measurements, which is constructed by adding random noise to the computed exact velocity, the present method is found to estimate the distribution of the zeta potential along the channel wall with reasonable accuracy.