The design of a novel complementary metal oxide semiconductor detection system for biochemical luminescence

We designed a complementary metal oxide semiconductor (CMOS) chip with accompanied accessories as a system for the detections and quantifications of biochemical luminescence. This is the first of such instruments that has been reported. The semiconductor chip was manufactured through a 0.25μm CMOS standard process. A current mirror was designed in integrated circuit (IC) to amplify the signal current that was induced by chemiluminescence. Horseradish peroxidase (HRP)-luminol-H₂O₂ system was used as an example to constitute a useful platform for coupling to chemiluminescence reactions which produce H₂O₂. Glucose-glucose oxidase (GOD) reaction was coupled with HRP-luminol-H₂O₂ reaction to demonstrate the ability of the novel CMOS base instrument for quantifying the biological luminescence of a variety of valuable clinical assays. Our results illustrated that the combination of the specifically designed CMOS IC and commercially available electronic devices established a simple and useful bioanalytical tool.