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. 2020 Jan 28;10(2):224. doi: 10.3390/nano10020224

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© 2020 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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Field emission scanning electron microscopy (FESEM) images of aged σCS@NSs (a) and HCS@NSs (b) acquired in direct (InLens mode, left) and back-scattered (QBSD mode, right) configurations.

Field emission scanning electron microscopy (FESEM) images of aged σCS@NSs (a) and HCS@NSs (b) acquired in direct (InLens mode, left) and back-scattered (QBSD mode, right) configurations.