Paper Title:
Investigation of Simple Process Technology for the Fabrication of Valveless Micropumps
  Abstract

This paper presents a simple process technique for the fabrication of valveless micro-pumps. The process design utilizes standard MEMS process using double-sided anisotropic silicon wet etching process with an additional adhesive bonding technique. The diffuser and nozzle element of the pump with depth of 50 µm, as well as a 150 µm thick silicon membrane are designed and fabricated using only 3 patterning process steps. A piezoelectric plate working at the frequency range from 0.1 kHz to 2 kHz is bonded on to the back side of the silicon membrane to create the membrane actuation. The patterning process of thick photoresist used as the adhesive layer for the substrate bonding is also discussed in detail. The fluid flow is observed and the process reproducibility is proven which show a good prospect for the future development of miniaturized valveless pump for biomedical application.

  Info
Periodical
Edited by
Lynn Khine and Julius M. Tsai
Pages
211-214
DOI
10.4028/www.scientific.net/AMR.254.211
Citation
J. Yunas, J. Johari, A. R. Bahadorimehr, I. C. Gebeshuber, M. Burhanuddin Yeop, "Investigation of Simple Process Technology for the Fabrication of Valveless Micropumps", Advanced Materials Research, Vol. 254, pp. 211-214, 2011
Online since
May 2011
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