Tunnelling currents inside plasmonic nanostructures are fast enough to gain direct access to the oscillating electric field of near-infrared and visible light, opening up exciting routes towards attosecond metrology of light–matter interaction and unique approaches to spectroscopy.
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Karpowicz, N. Nanoantenna tunnelling currents record laser waves. Nat. Photonics 15, 408–410 (2021). https://doi.org/10.1038/s41566-021-00824-9
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DOI: https://doi.org/10.1038/s41566-021-00824-9
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