کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5369745 1388451 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of surface heterogeneity in electroosmotic flows-Implications in chromatography, fluid mixing, and chemical reactions in microdevices
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Influence of surface heterogeneity in electroosmotic flows-Implications in chromatography, fluid mixing, and chemical reactions in microdevices
چکیده انگلیسی

We analyze the influence of surface heterogeneity, inducing a random ζ-potential at the walls in electroosmotic incompressible flows. Specifically, we focus on how surface heterogeneity modifies the physico-chemical processes (transport, chemical reaction, mixing) occurring in microchannel and microreactors. While the macroscopic short-time features associated with solute transport (e.g. chromatographic patterns) do not depend significantly on ζ-potential heterogeneity, spatial randomness in the surface ζ-potential modifies the spectral properties of the advection-diffusion operator, determining different long-term properties of transport/reaction phenomena compared to the homogeneous case. Examples of physical relevance (chromatography, infinitely fast reactions) are addressed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 13, 30 April 2007, Pages 5785-5790
نویسندگان
, , , ,