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

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(a) Quantum-mechanical transmission probability of He passing through the pore of C₂N-h2D membrane as a function of kinetic energy. The solid curves represent the quantum-mechanical transmission of ³He and the dashed curves represents that of ⁴He under different strains, respectively; (b) Thermally weighted transmission of ³He (solid curves) and ⁴He (dashed curves) under different strains; (c) ³He/⁴He transmission ratio under different strains.