. 2021 May 26;11(6):1403. doi: 10.3390/nano11061403
© 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/).
Figure 4.
SEM images (a) HA and (b) HA/Au nanocomposite.