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. 2015 Sep 15;8(1):44–53. doi: 10.1007/s40820-015-0060-6

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© The Author(s) 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. 2 — Characterization of GNPs. a, b, c The dark-field hyperspectral image, mapped image using the reference spectra marked in red in (c), and reflectance spectra of GNPs of size 20 nm, respectively. d, e, f The dark-field hyperspectral image, mapped image using the reference spectra marked in red in (f), and reflectance spectra of GNPs of size 50 nm, respectively. (Color figure online)