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. 2019 Oct 18;9(10):1488. doi: 10.3390/nano9101488

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© 2019 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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(a) TEM images of AuNP produced with a HAuCl₄/sodium citrate ratio of 1:3 with pulsed plasma treatment for 7 min. (b) SAED pattern of an ensemble of AuNP. (c) high-resolution TEM (HRTEM) image of a typical single crystal of AuNP.