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. 2015 Mar 4;6:6511. doi: 10.1038/ncomms7511

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(a–c) Selected snapshots of the MD trajectory for Au₂₀/CeO₂ with a circled Au–CO unit to show the diffusion process. (yellow or pink sphere: Au; cyan sphere: Ce; red sphere or blue sphere: O; green sphere or grey sphere: C)