Expandable microspheres for the handling of liquids
2002 (English)In: Lab on a Chip, ISSN 1473-0197, E-ISSN 1473-0189, Vol. 2, no 2, 117-120 p.Article in journal (Refereed) Published
Two novel concepts for controlled handling of liquids in microfluidic systems are presented: a one-shot micropump and a normally open one-shot valve based on thermo-expanding Expancel microspheres. Expancel microspheres are small spherical plastic particles that, when heated, increase their volume considerably. We show that liquid volumes in the nanoliter range can be actuated against a counter pressure of at least 100 kPa and fluid flow can be inhibited in a microchannel against pressures of at least 100 kPa.
Place, publisher, year, edition, pages
2002. Vol. 2, no 2, 117-120 p.
IdentifiersURN: urn:nbn:se:kth:diva-21900DOI: 10.1039/b111040nISI: 000178030700014OAI: oai:DiVA.org:kth-21900DiVA: diva2:340598
QC 201005252010-08-102010-08-10Bibliographically approved