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. 2015 Oct 12;10:398. doi: 10.1186/s11671-015-1107-9

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© Kurantowicz et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Nanoparticles visualized using transmission electron microscopy (a–c) and a digital camera (d–f). Images of diamond (a) and (d), graphite (b) and (e), and graphene oxide (c) and (f)