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. 2021 Jun 11;11(6):1553. doi: 10.3390/nano11061553

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© 2021 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 (https://creativecommons.org/licenses/by/4.0/).

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(a) TEM images of Au/Ag “core–shell” BMNPs, demonstrated using the EDX technique. Nanoparticles were obtained by laser synthesis in configuration N2. (b) Top: A cross-sectional image of a nanoparticle model with a core–shell structure and the pixel intensity profile of the elements from the core and shell for the corresponding EDX TEM image. Arrows show the direction of the flow of electrons (e-) during image acquisition. Bottom: Pixel intensity profiles for Au and Ag for TEM images of two nanoparticles.