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. 2019 Nov 25;9:17469. doi: 10.1038/s41598-019-53621-4

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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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(a) The UV-Vis absorption spectrum of the chemically synthesized sample (solid line) and the spectrum obtained by fitting the longitudinal resonance (dash line). Inset is shown a photograph of the GNRs solution (b) AR distributions curve obtained through the measurement with the TEM images measurement (solid line) and fitting of The UV-Vis spectrum (dashed line). The legend shows the mean value for both graphs. (c) TEM images taken at three different places on the TEM grid. The scale bar represents 50 nm.