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. 2018 Sep 25;3(4):28. doi: 10.3390/biomimetics3040028

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Characterization of AuNPs. (a–c) Hydrodynamic diameter size (nm) of modified AuNPs and polydispersity index (Pdi). (d) Ultraviolet–visible (UV–vis) spectrum where the corresponding plasmon band at 520 nm was noticeable.