Biosensors (Mar 2021)

Siphon-Controlled Automation on a Lab-on-a-Disc Using Event-Triggered Dissolvable Film Valves

  • Brian D. Henderson,
  • David J. Kinahan,
  • Jeanne Rio,
  • Rohit Mishra,
  • Damien King,
  • Sarai M. Torres-Delgado,
  • Dario Mager,
  • Jan G. Korvink,
  • Jens Ducrée

DOI
https://doi.org/10.3390/bios11030073
Journal volume & issue
Vol. 11, no. 3
p. 73

Abstract

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Within microfluidic technologies, the centrifugal microfluidic “Lab-on-a-Disc” (LoaD) platform offers great potential for use at the PoC and in low-resource settings due to its robustness and the ability to port and miniaturize ‘wet bench’ laboratory protocols. We present the combination of ‘event-triggered dissolvable film valves’ with a centrifugo-pneumatic siphon structure to enable control and timing, through changes in disc spin-speed, of the release and incubations of eight samples/reagents/wash buffers. Based on these microfluidic techniques, we integrated and automated a chemiluminescent immunoassay for detection of the CVD risk factor marker C-reactive protein displaying a limit of detection (LOD) of 44.87 ng mL−1 and limit of quantitation (LoQ) of 135.87 ng mL−1.

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