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Electrolysis-free pumps for lab-on-a-chip applications

posted Nov 29, 2010, 12:37 PM by Nathaniel Robinson   [ updated Apr 13, 2011, 5:06 AM ]
We have presented a new electroosmotic pump / electrokinetic system for use in lab-on-a-chip (microfluidic and nanofluidic) applications.  The new pump features electrochemically active electrodes that eliminate electrolysis of the solvent (e.g. water).  This, in turn, alleviates many of the disadvantages of electroosmotic pumps in microfluidic systems, e.g. that they generate gas bubbles and change the solution's pH.  Additionally, the materials we use are solution processable, meaning that they are compatible with e.g. inkjet printing, allowing for inexpensive and simple integration with existing manufacturing processes.

Update: These results can be found in an article in the journal Electrophoresis.

P. G. Erlandsson and N. D. Robinson, Electrolysis-Reducing Electrodes for Electrokinetic Devices. Electrophoresis 32 pp. 784-790 (2011)

For more information, contact Nathaniel Robinson.