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Electroosmotic flow patterning using microfluidic delay loops

Schönfeld, F. and Hardt, Steffen and Böhm, M. and Püschl, R. J. and Walder, M. and Wenclawiak, B. (2006):
Electroosmotic flow patterning using microfluidic delay loops.
6, In: Lab on a chip, (12), pp. 1525-1529, ISSN 1473-0197, [Online-Edition: http://dx.doi.org/10.1039/b609423f],
[Article]

Abstract

A theoretical and experimental investigation of alternating electroosmotic flow patterns by means of specially designed delay loops is presented. Using elementary methods of compact network modeling and detailed FEM simulations the flow behavior and, in particular, the rearrangement of sample plugs is modeled. The proposed designs rely on flow splitting in combination with electroosmotic delay loops leading to a runtime difference or phase shift between two sub-streams. Due to this phase shift, a new fluid interface is generated at the merging point. The approach is experimentally validated by injection of a Rhodamine 6G solution into an aqueous sodium tetraborate buffer.

Item Type: Article
Erschienen: 2006
Creators: Schönfeld, F. and Hardt, Steffen and Böhm, M. and Püschl, R. J. and Walder, M. and Wenclawiak, B.
Title: Electroosmotic flow patterning using microfluidic delay loops
Language: English
Abstract:

A theoretical and experimental investigation of alternating electroosmotic flow patterns by means of specially designed delay loops is presented. Using elementary methods of compact network modeling and detailed FEM simulations the flow behavior and, in particular, the rearrangement of sample plugs is modeled. The proposed designs rely on flow splitting in combination with electroosmotic delay loops leading to a runtime difference or phase shift between two sub-streams. Due to this phase shift, a new fluid interface is generated at the merging point. The approach is experimentally validated by injection of a Rhodamine 6G solution into an aqueous sodium tetraborate buffer.

Journal or Publication Title: Lab on a chip
Volume: 6
Number: 12
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Technical Thermodynamics (TTD)
Zentrale Einrichtungen
16 Department of Mechanical Engineering > Institute for Nano- and Microfluidics (NMF)
Date Deposited: 12 Apr 2011 11:53
Official URL: http://dx.doi.org/10.1039/b609423f
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