Hauptseminar Multiscale Simulations SS 2016/Mean-field modelling of EOF and electrophoresis with an FEM based approach
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- Date
- tba"tba" contains an extrinsic dash or other characters that are invalid for a date interpretation.
- Topic
- Mean-field modelling of EOF and electrophoresis with an FEM based approach
- Speaker
- tba
- Tutor
- Georg Rempfer
Contents
None of the methods discussed so far can be applied to systems on experimental length scales directly, due to the large size difference of the double layer and the geometric features of these systems. The Finite Element Method (FEM) allows one to overcome this issue, due to its inherent ability to deal with complex geometries and to work on locally refined meshes.
The speaker will discuss a number of experimentally realized microfluidic systems, introduce the FEM, discuss it's strengths and weaknesses when applied to the electrokinetic equations (as introduced in the previous talk), and finally present some results obtained using the FEM.
Literature
- Sascha Ehrhardt.
"Simulation of Electroosmotic Flow through Nanocapillaries using Finite-Element Methods".
Master's Thesis, ICP, 2015.
- Sascha Ehrhardt.
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Patrick Kreissl, Christian Holm, Joost de Graaf.
The efficiency of self-phoretic propulsion mechanisms with surface reaction heterogeneity.
The Journal of Chemical Physics 144(20):204902, 2016.
[PDF] (1.6 MB) [DOI] -
Ran Niu, Patrick Kreissl, Aidan Thomas Brown, Georg Rempfer, Denis Botin, Christian Holm, Thomas Palberg, Joost de Graaf.
Microfluidic pumping by micromolar salt concentrations.
Soft Matter 13(7):1505–1518, 2017.
[PDF] (4.5 MB) [DOI]