Continuous magnetic bead based micro-immunosensing with extended incubation via spiral channel design

Lawrence A. Sasso, Jeffrey D. Zahn

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work describes the development of a continuous flow magnetic bead based microfluidic biosensor for antigen concentration tracking. These devices will ultimately be applied to clinical applications such as for monitoring systemic inflammation during cardiac surgeries. A novel magnetic actuation scheme is used to enable autonomous on-chip serial reaction bead processing and detection. Previously reported devices used a single layer device with a straight incubation channel. A novel implementation is presented using a similar magnetic actuation scheme within multi-layer devices with spiral incubation channels. These devices offer reaction incubation times up to 40 times longer than previous designs with continuous bead motion for lower antigen concentration detection limits.

Original languageEnglish (US)
Title of host publicationProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PublisherChemical and Biological Microsystems Society
Pages728-730
Number of pages3
ISBN (Print)9780979806421
StatePublished - 2009
Event13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009 - Jeju, Korea, Republic of
Duration: Nov 1 2009Nov 5 2009

Publication series

NameProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences

Other

Other13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009
Country/TerritoryKorea, Republic of
CityJeju
Period11/1/0911/5/09

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Bioengineering

Keywords

  • Immunoassay
  • Magnetic actuation
  • Microbeads
  • Spiral channel

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