Development of an interferometric nanoscale silicon biosensor

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Voelcker et al. have recently demonstrated the rapid degradation of porous silicon by certain supramolecular transition metal complexes known as functional mimics of metalloproteins. The catalyzed degradation forms the basis of a new sensor principle where the porous layer serves as matrix, transducer and signal amplification stage. This project uses porous silicon degradation to develop a biosensor platform capable of detecting a range of analytes with high sensitivity. The project includes detection of an water-borne toxin, a plant virus and a cancer antigen as demonstrators of its wide applicability. Multiplexing of the biosensor to demonstrate its potential as high-throughput chip sensors is also included.