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Microfluidic Chips Controlled with Elastomeric Microvalve Arrays
Published on: October 1, 2007
Semi-autonomous liquid handling via on-chip pneumatic digital logic
Transon V Nguyen1, Philip N Duncan, Siavash Ahrar
1Department of Biomedical Engineering, University of California, Irvine, CA 92697-2715, USA.
Lab on a Chip
|September 13, 2012
Summary
This study introduces a novel liquid-handling chip controlled by on-board pneumatic circuits, simplifying operations like metering and mixing. This innovation eliminates the need for complex external electronic controls in microfluidic devices.
Area of Science:
- Microfluidics
- Biotechnology
- Automation
Background:
- Integrated microfluidic devices often require complex off-chip electronic control systems.
- Existing systems face challenges in miniaturization and autonomous operation.
Purpose of the Study:
- To present a novel liquid-handling chip controlled entirely by on-board pneumatic circuitry.
- To demonstrate autonomous execution of multiple liquid handling functions.
Main Methods:
- Development of a microfluidic chip with integrated pneumatic digital logic circuits.
- Utilizing 31 microfluidic valves for programmed control of liquid handling operations.
- Employing vacuum-based state selection for four distinct machine functions.
Main Results:
- The chip successfully performs metering, mixing, incubation, and wash procedures.
- Pneumatic logic circuits enable programmed control and coordinated valve cycling for peristaltic pumping.
- Elimination of external electronic control machinery was achieved.
Conclusions:
- The developed pneumatic control system offers a simplified and autonomous approach to microfluidic liquid handling.
- This technology has the potential to reduce the complexity and cost of integrated microfluidic systems.
