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Images of PMMA without NPs (control) (a); PMMA + AgNPs (3 wt%) (b) and PMMA + AgNPs (3.5 wt%) (c): The color became darker with increasing concentrations of the NPs. AFM topographical images of PMMA without NPs added (control) (d); PMMA + AgNPs (3 wt%) (e) and PMMA + AgNPs (3.5 wt%) (f). Reprinted from ref. [95], copyright 2019, MDPI.
