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Effect of NIR irradiation on bacteria in NPs solutions. (a) SEM images of S.aureus without or with NIR irradiation in different solutions. (b) Local amplification and (c) EDAX mapping images of copper ions for SEM image of S.aureus in CuS-PNIPAm NPs with NIR irradiation. (d) TEM images of the aggregates of NPs–NPs and NPs–bacteria induced by NIR irradiation. NIR irradiation proceeded for 5 min by a laser with 808 nm, 2 W/cm2.
