A group at Caltech have used an optical microcavity to perform label-free detection of single molecules for the first time. The work represents a milestone in the application of optical cavities in sensing, and could lead to the realization of ultrasensitive lab-on-a-chip systems.
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Loncar, M. Cavities lead the way. Nature Photon 1, 565–567 (2007). https://doi.org/10.1038/nphoton.2007.187
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DOI: https://doi.org/10.1038/nphoton.2007.187
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