Philip Ball explains how a new way of printing waterproof patterns onto a surface could be used to make laboratories the size of a microchip.
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References
Tadanaga,K., Morinaga, J., Matsuda, A. & Minami, T. Superhydrophobic-Superhydrophilic Micropatterning on Flowerlike Alumina Coating Film by the Sol-Gel Method Chemistry of Materials 12, 590 - 592 2000.
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Ball, P. Wet where you want. Nature (2000). https://doi.org/10.1038/news000323-6
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DOI: https://doi.org/10.1038/news000323-6