We experimentally demonstrate a silicon-based photonic crystal microcavity biosensor. This device is capable of detecting ~1 femtogram of analyte. Its performance is tested with glutaraldehyde-BSA model for quantitive measurements and biotin-streptavidin recognition for selectivity demonstration.
© 2007 OSA
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(230.0230) Optical devices : Optical devices
(230.5750) Optical devices : Resonators
M. Lee and P. M. Fauchet, "Label-Free Optical Biosensor Built with Two-Dimensional Silicon Photonic Crystal Microcavity," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper CThZ2.
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