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(a) Schematic of the silver nanocube infiltration method showing the NAA membrane coated with a positively charged polyelectrolyte (PAH, PEI or PAH–PSS bilayers) that is subsequently decorated with silver nanocubes by infiltration (adapted from [50]); (b) transmission electron microscopy image of silver nanocubes (adapted from [50]). PAH, poly(allylamine hydrochloride); PEI, polyethylenimine; PSS, poly(sodium 4-styrenesulfonate).
