Directional control of the diffusion of excitons is desired for excitonic devices, but being neutrally charged they can’t be transported by applying a bias voltage as for conventional electronic transport. It is now shown that surface acoustic waves can direct the flux of excitons over micrometre distances, even at room temperature.
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Quereda, J., Castellanos-Gomez, A. Excitons surf the waves. Nat. Photon. 16, 179–180 (2022). https://doi.org/10.1038/s41566-022-00964-6
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DOI: https://doi.org/10.1038/s41566-022-00964-6