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. 2022 Feb 23;12(5):750. doi: 10.3390/nano12050750

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© 2022 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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HRTEM observations of NSTFs prepared by laser ablation: (a–c) Ag _TiO₂_AP; (d–f) Ag_TiO₂_500. (a) Low-magnification image of Ag _TiO₂_AP; (b) HRTEM of Ag _TiO₂_AP; (c) interpretation of (b) showing a single-crystal nanoparticle of cubic Ag viewed down [110]; (d) low-magnification image of Ag_TiO₂_500; (e) HRTEM of Ag_TiO₂_500; (f) interpretation of (e) showing fivefold twin nanoparticle of cubic Ag viewed down [110]; in the inset, the corresponding FFTs are shown with the direction [002] highlighted by a yellow line.