Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.
Science Signaling - Call for Papers

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 29 October 1999:
Vol. 286. no. 5441, pp. 942 - 945
DOI: 10.1126/science.286.5441.942
Prev | Table of Contents | Next

Reports

Field-Effect Flow Control for Microfabricated Fluidic Networks

Richard B. M. Schasfoort, Stefan Schlautmann, Jan Hendrikse, Albert van den Berg *

The magnitude and direction of the electro-osmotic flow (EOF) inside a microfabricated fluid channel can be controlled by a perpendicular electric field of 1.5 megavolts per centimeter generated by a voltage of only 50 volts. A microdevice called a "flowFET," with functionality comparable to that of a field-effect transistor (FET) in microelectronics, has been realized. Two flowFETs integrated with a channel junction have been used to generate opposite flows inside a single EOF-pumped channel, thus illustrating the potential of the flowFET as a controlling and switching element in microfluidic networks.

MESA+ Research Institute, University of Twente, Post Office Box 217, 7500 AE Enschede, Netherlands.
*   To whom correspondence should be addressed.

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Fluid Control in Multichannel Structures by Electrocapillary Pressure.
M. W. J. Prins, W. J. J. Welters, and J. W. Weekamp (2001)
Science 291, 277-280
   Abstract »    Full Text »
Monolithic Microfabricated Valves and Pumps by Multilayer Soft Lithography.
M. A. Unger, H. Chou, T. Thorsen, A. Scherer, and S. R. Quake (2000)
Science 288, 113-116
   Abstract »    Full Text »


ADVERTISEMENT
Click Me!

ADVERTISEMENT
Click Me!

To Advertise     Find Products