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. 2016 Feb 23;6:21792. doi: 10.1038/srep21792

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(A) A cm-scale photograph and (B) SEM image of the thin Fe₂O₃ nanoparticle film on a silicon wafer. (C) A cm-scale photograph and (D) SEM image of the hybrid composite of Fe₂O₃ nanoparticles and nitrocellulose.