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  • RESEARCH HIGHLIGHT

How to make water flow uphill

Water droplets skitter across a surface ‘printed’ with patterns of negative charge.
Charged surface-based droplet pipette

Four water droplets acting as wheels on a cargo carrier whiz along a negatively charged surface. Credit: Xu Deng/Zuankai Wang/Hans-Jürgen Butt

Droplets of water can propel themselves up a vertical surface against the pull of gravity.

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Nature 572, 9 (2019)

doi: https://doi.org/10.1038/d41586-019-02268-2

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