Fig. 5: Temperature control for IR painting, and writing. | Nature Communications

Fig. 5: Temperature control for IR painting, and writing.

From: Chameleon-inspired tunable multi-layered infrared-modulating system via stretchable liquid metal microdroplets in elastomer film

Fig. 5

a The total reflectance spectra of samples (r-0%, r-1011% and m-1011%) made from 70 °C (Sn-Bi-Pb alloy). b The average reflectances calculated from total reflectance spectra of samples (r-0%, r-1011% and m-1011%) made from 70 °C (Sn-Bi-Pb alloy). c The apparent temperatures (lines) and the calculated temperatures (dots) of samples (r-0%, r-1011% and m-1011%) made from 70 °C (Sn-Bi-Pb alloy) placed on the hot plate with a temperature of 64 °C and 104 °C, and the corresponding IR images are also displayed. d The optical images and 3D surface topography images of samples’ surfaces (r-0% and m-1011%) made from 70 °C (Sn-Bi-Pb alloy). The scale bar reflects the intensity of surface fluctuation. e The average reflectance calculated from total reflectance spectra of the sample made from 70 °C (Sn-Bi-Pb alloy) with and without applying areal strain after different cycles (1, 2, 3, and 4). f The IR images of stretched triangle pattern under room temperature (r.t.), temperature 1 (temp. 1: 60 °C), and temperature 2 (temp. 2: 100 °C). The scale bar is 1 cm for IR images. g Schematic illustration of using a laser to write “I, R” character on Ecoflex/low mp alloy film made from 70 °C (Sn-Bi-Pb alloy) and corresponding IR images. The scale bar is 0.25 cm for IR images.

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