Freely programmable lab-on-a-chip
Novel microfluidic chip with electroosmotic drive units
Exhibitors
Description
Market Launch
01 1
Microfluidic chips, known as lab-on-a-chip, are used to automate analytical processes in medicine, pharmacy and chemistry. Often, the chips are customized and expensive. Programmable chips, on the other hand, fulfill the requirements for flexible use and lower-cost production in large quantities.
The transport of fluids or droplets by electric fields is already possible in digital microfluidics. (Bio-)chemical samples that are dissolved in carrier fluids are thus mixed, caused to react and the results are analyzed. However, the widespread use of this methods on small length scales fails due to high voltages, excessive heat generation and low efficiency.
With a new method for generating liquid flows, scientists from KIT overcome these disadvantages. Here, the drive is provided by traveling wave electroosmosis (TWEO). A chip made of semiconductor material is separated into tiny pixels in a matrix-like array. Electrodes are embedded in each pixel, which generate an electric field and specify a flow direction and velocity. Thus, one or more material flows of the samples can be moved along any path in a freely programmable electric field on the given pixel array. Due to the small dimensions of the individual pixels, only low voltages are required for this. The modular structure allows efficient control of the individual pixels in the grid.
The overall concept for the chip (STOKES2) with integrated control is superior to customer-specific systems in its flexibility due to the programmability. The low-voltage electroosmotic drive unit with alternating current in a compact 3-electrode design generates high flow velocities with comparatively low heat generation so that sensitive samples can be manipulated.
You can get an overview of this technology at KIT stand. More details can be exchanged individually with the responsible scientific employees of KIT after the industry fair.
Karlsruher Institut für Technologie (KIT)
- Kaiserstr. 12
- 76131 Karlsruhe
- Germany
Contact
- Phone: +49 721608 -0
- Fax: +49 721608 44290
Contact
Karlsruher Institut für Technologie (KIT)
- Kaiserstr. 12
- 76131 Karlsruhe
- Germany
Locations
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