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Bacteria’s inner structure disruption and potential mechanism of CuS NDs PTT antibacterial effect. SEM images of (a) ESBL E. coli and (b) MRSA treated with different materials (45 μg/mL) upon laser irradiation (2.5 W/cm2, 10 min). TEM images of (c) ESBL E. coli and (d) MRSA treated with different materials (45 μg/mL) upon laser irradiation (2.5 W/cm2, 10 min).
