Fig. 3: Specular reflectance-based IR camouflage performance, specular reflectance spectra, and surface topography of BLEE film. | Nature Communications

Fig. 3: Specular reflectance-based IR camouflage performance, specular reflectance spectra, and surface topography of BLEE film.

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

Fig. 3

a Schematic illustration of the experimental setup of specular reflectance-based IR camouflage, where IR source (hot plate) is put on the left side and IR camera is put on the right side of the sample. b IR images of samples with different mass ratios of Ecoflex/EGaIn (1:0, 1:2, 1:4, 1:6, 1:8, and 1:10) under the applied areal strain of 0%, 137%, 525%, 1011%, and 1500%, respectively. c The temperature curves taken from the IR images of BLEE films in Fig. 3b. All error bars represent the standard deviation. d The total reflectance and specular reflectance spectra of BLEE films with mass ratio of 1:10, after applying different areal strains (0% and 1500%). e The calculation results of average total reflectances and specular reflectances in the range from 7.5 μm to 14 μm (histogram), and the ratios of average specular reflectance to total reflectance (red line). f The 3D surface topographies of BLEE films with mass ratios of 1:6, 1:8, and 1:10, after applying areal strains of 0% and 1500%. The scale bar reflects the intensity of surface fluctuation.

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