|Title:||EDL configuration on a dissimilarly charged protrusion array via double Fourier series and perturbation method||Authors:||Lin S.-H.
|Keywords:||Dissimilarly charged protrusion array (DCPA);Double Fourier series;Perturbation method;Surface charged condition;Surface morphology||Issue Date:||2011||Journal Volume:||88||Journal Issue:||1||Start page/Pages:||527-533||Source:||Colloids and Surfaces B: Biointerfaces||Abstract:||
In this study, through the extension of an one-dimensional, dissimilarly charged protrusions surface model set up in our previous work, a novel dissimilarly charged protrusion array (DCPA) model immersed in an electrolyte solution, which could simulate realistically both the surface morphology and the surface charged condition profoundly concerned on a biological cell membrane, or on the surface of a micro-scale, modified particle used in biomedical engineering and water treatment, is proposed. Considering the condition of small protrusions, the electrical potential field due to the electrical double layer (EDL) on DCPA model is solved semi-analytically using both the double Fourier series and the perturbation method. The analysis from the numerical result reveals that, a small, dissimilarly charged protrusion can lead to a steep variation in the local EDL configuration, especially compared with that in the condition when the charged surface is taken roughly as a flat surface using a lumped, mean surface charge density. ? 2011 Elsevier B.V.
|Appears in Collections:||化學工程學系|
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