Change search
ReferencesLink to record
Permanent link

Direct link
A valve-less diffuser micropump for microfluidic analytical systems
KTH, Superseded Departments, Biotechnology.
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0001-8248-6670
KTH, Superseded Departments, Biotechnology.
Show others and affiliations
2001 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, Vol. 72, no 3, 259-265 p.Article in journal (Refereed) Published
Abstract [en]

The suitability of valve-less micropumps in biochemistry has been shown. Fluids encountered in various biochemical methods that are problematic for other micropumps have been pumped with good performance. The pump is fabricated as a silicon-glass stack with a new process involving three subsequent deep reactive ion etching steps. Some of the main advantages of the valve-less diffuser pump are the absence of moving parts (excluding the pump diaphragm), the uncomplicated planar design, and high pump performance in terms of pressure head and flow rare. In addition, the micropump is self-priming and insensitive to particles and bubbles present in the pumped media. The results show that the valve-less micropump successfully pumps fluids within the viscosity range of 0.001-0.9 N s/m(2). The micropump is not sensitive to the density, ionic strength, or pH of the pumped media. Effective pumping of solutions containing beads of different sizes was also demonstrated. Living cells were pumped without inducing cell damage and no cell adhesion within the pump chamber was found. No valve-less micropump has previously been reported to pump such a wide variety of fluids.

Place, publisher, year, edition, pages
2001. Vol. 72, no 3, 259-265 p.
Keyword [en]
valve-less micropump, highly viscous liquids, bead handling, living, cells, devices, pumps, cells
URN: urn:nbn:se:kth:diva-20356ISI: 000166893200010OAI: diva2:339051
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Andersson, Helenevan der Wijngaart, WouterNilsson, PeterStemme, Göran
By organisation
BiotechnologySignals, Sensors and Systems
In the same journal
Sensors and actuators. B, Chemical

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 93 hits
ReferencesLink to record
Permanent link

Direct link