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. 2016 Sep 9;7:12543. doi: 10.1038/ncomms12543

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Copyright © 2016, The Author(s)

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(a) SEM, (b) TEM (inset, corresponding electron diffraction pattern) and (c) AFM characterizations of the ZrO₂ nanosheets. (d) SEM, (e) TEM (inset, corresponding electron diffraction pattern) and (f) AFM characterizations of the Al₂O₃ nanosheets. (g) SEM, (h) TEM (inset, corresponding electron diffraction pattern) and (i) AFM characterizations of the Y₂O₃ nanosheets. Scale bars, 2 μm (a,d,g), 500 nm (b,e) and 50 nm (h).