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An artificial skin oozes ‘sweat’ through tiny pores

A digital holographic microscope image showing a blue plane dotted with striped cones.

Radio waves trigger a porous surface (blue) to ‘sweat’ liquid droplets (multicoloured peaks). The tallest droplets (red-tipped) are 800–1,000 nanometres high. Credit: Danqing Liu

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Nature 582, 463 (2020)




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