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. 2019 Aug 5;19(15):3427. doi: 10.3390/s19153427

Figure 2.

Figure 2

Optimization of the areal density of the silver NWs on a napkin. SEM images of the silver NWs on napkins with the density of 0.67 mg cm−2 (a), 1 mg cm−2 (b), and 1.33 mg cm−2 (c), respectively. The scale bars are 1 μm.