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licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
Scanning electron microscopy (SEM) images of 500-µm-wide channels with 50 × 50 µm2 Ag dots. (a,b) Top view of Ag dots before recovery; (c,d) Top and side view of the sample after recovery; (e,f) Close-up of the vertical sidewall with the broken Ag dots and ripples.