Journal
ANALYTICAL CHEMISTRY
Volume 81, Issue 9, Pages 3455-3461Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac8027323
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Funding
- Defense Advanced Research Project Agency (DARPA) [11F000113]
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Biosensors have successfully demonstxated the capability to detect multiple pathogens simultaneously kit very low levels. Miniaturization of biosensors is essential for use in the field or at die point of care. While microfluidic systems reduce the footprint for biochemical processing devices and electronic components are continually becoming smaller, optical components suitable for integration-such as LEDs and CMOS chips-are generally still too expensive for disposable components. This paper describes the integration of polymer diodes onto a biosensor chip to create a disposable device that includes both the detector and the sensing surface coated,with immobilized capture antibody. We performed a chemiluminescence immunoassay on the OPD substrate and measured the results using a hand-held reader attached to a laptop computer. The miniaturized biosensor with the disposable slide including the organic photodiode detected Staphylococcal enterotoxin B at concentrations as low as 0.5 ng/mL.
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