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(A) Infrared thermal images of the Bi-Ag@PVP NPs at different times and (B) the fitted curves. (C) Photothermal heating curves of the Bi@PVP NPs and (D) the corresponding infrared thermal images. (E and F) Infrared thermal images and the corresponding temperature–time curves of the Bi@PVP (purple) and Bi-Ag@PVP (red) NPs in HepG2-bearing mice. (G) Heating/cooling cycle curve of the Bi-Ag@PVP NPs.
