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. 2019 Sep 25;9:13859. doi: 10.1038/s41598-019-50424-5

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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UV-Visible absorption spectroscopy for synthesized gold colloid showing the characteristic plasmony peak at 522 nm (A) X-ray diffraction pattern depicting the characteristic peaks of nanocrystals. (B) Images obtained by transmission electron microscopy at different magnifications showing the size and distribution of the synthesized nanoparticles. Scale bar 100 nm (C,D) and 10 nm (E,F).