Search:
 
    Résumé    Research    Publications    Gallery    Links Intranet   

Back

Electromagnetically actuated ball valve micropumps
( Former project )

C. Yamahata, F. Lacharme, J. Matter, S. Schnydrig, Y. Burri, M. A. M. Gijs

Get the pdf file

Keywords: ball valve, micropump, lab-on-a-chip, PMMA, glass, powder blasting, electromagnetic actuation

Photograph of the glass ball valve micropump. [external dimensions: 36 mm × 22 mm]

 
We have developed two types of ball valve reciprocating micropumps for LOC applications; both are actuated with an external electromagnet. A first type of disposable micropump is made out of polymethylmethacrylate (PMMA), while a second type of re-usable micropump is made out of borosilicate glass; the latter has the advantage of being sterilisable at high temperature (120 °C). Both types of micropumps were realized using powder
 
blasting micro-erosion. The flexible magnetic actuation membranes were fabricated in polydimethylsiloxane (PDMS) with embedded NdFeB magnetic powder for the plastic micropump, and with a cylindrical NdFeB magnet for the glass micropump.

This project was presented at Transducers '05.
Download the presentation

Back
Last modified: June 14th, 2008