A polymer that incorporates liquid-crystal components generates continuous mechanical waves when lit by ultraviolet light, with potential applications for energy harvesting and self-cleaning surfaces. See Letter p.632
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Yu, Y. A light-fuelled wave machine. Nature 546, 604–606 (2017). https://doi.org/10.1038/546604a
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DOI: https://doi.org/10.1038/546604a
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