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. Author manuscript; available in PMC: 2010 Feb 23.
Published in final edited form as: Biomed Microdevices. 2009 Dec;11(6):1175–1186. doi: 10.1007/s10544-009-9334-4

Fig. 9.

Fig. 9

Components of the lab-on-chip cassette for microbead immunoassays. (a) Polyethylene cartridge containing membrane valves and depressible pouches for reagent delivery and mixing. (b) Bottom side of a mated cassette showing polycarbonate substrate containing conduits, detection chamber, and silicon microbead array. The array contains wells populated with functionalized beads; the channels interface with the pouches and valves in (a) through interconnecting needles.