Fig. 4From: An injectable, in situ forming and NIR-responsive hydrogel persistently reshaping tumor microenvironment for efficient melanoma therapyThe photothermal performance of MD@SA hydrogel. (a) The UV-Vis spectrum of MD@SA hydrogel with various concentrations. (b) The near-infrared images of MD@SA hydrogel under 808Â nm irradiation (1.0Â W/cm2). The temperature rising patterns of MD@SA hydrogel with different (c) concentration and (d) laser power. (e) Photothermal heat curves of MD@SA hydrogel over four NIR irradiation (1.0Â W/cm2) on/off cycles. (f) Heating and cooling curve of MD@SA hydrogel under 808Â nm laser irradiation (1.0Â W/cm2)Back to article page