The finding that carbon nanotube–elastomer nanocomposites can either contract or expand reversibly on exposure to light is surprising and hard to explain. But this may create a new avenue for the development of light-controlled actuators.
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Vaia, R. Remote-controlled actuators. Nature Mater 4, 429–430 (2005). https://doi.org/10.1038/nmat1400
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DOI: https://doi.org/10.1038/nmat1400
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