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Materials science

Breakthrough for protons

The atomically thin material called graphene is impermeable to atoms as small as helium. The finding that protons can pass through it might enable new kinds of membrane to be developed and aid research into fuel cells. See Letter p.227

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Figure 1: Electron density distribution in two-dimensional materials.

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Correspondence to Rohit N. Karnik.

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Karnik, R. Breakthrough for protons. Nature 516, 173–174 (2014). https://doi.org/10.1038/nature14074

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