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. 2016 Jan 27;6:19952. doi: 10.1038/srep19952

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(a) Energy profile for He passing through the pore of the C₂N-h2D membrane under different tensile strains. Colored points indicate the results obtained by first-principles calculations; while the curves show the numerically interpolated potentials. (b) The strain dependency of the penetration barrier heights and the FWHM.