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. 2014 Dec 12;4:7469. doi: 10.1038/srep07469

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Low-magnification TEM image of the ZnO QDs (a) and carbon nanodots (d); High resolution TEM images of the ZnO QDs (b) and carbon nanodots (e); Selected-area electron diffraction patterns of the ZnO QDs (c) and carbon nanodots (f).