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. 2020 Oct 2;6(40):eabb6772. doi: 10.1126/sciadv.abb6772

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Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 2 — (A to E) TEM images and corresponding lateral size distributions of b-CQDs (A), c-CQDs (B), yg-CQDs (C), o-CQDs (D), and r-CQDs (E). (F to J) High-resolution TEM images of b-CQDs (F), c-CQDs (G), yg-CQDs (H), o-CQDs (I), and r-CQDs (J) (inset: fast Fourier transform patterns). (K to O) AFM images and corresponding height profiles of b-CQDs (K), c-CQDs (L), yg-CQDs (M), o-CQDs (N), and r-CQDs (O).