Plasmonic hotspots — nanometre-sized crevices that permit the detection of single molecules — are too small to be imaged with conventional microscopes. They can now be probed using super-resolution fluorescence microscopy. See Letter p.385
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Moskovits, M. Spot the hotspot. Nature 469, 307–308 (2011). https://doi.org/10.1038/469307a
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DOI: https://doi.org/10.1038/469307a
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