Fig. 7: Demo of programmable IR Morse coding.

a The optical and IR images (with applied areal strains of 0%, 178%, 334%, 525%, and 751%) of two types of patterns fabricated by trilayered Ecoflex/EGaIn-1:2&1:6/Au film. The scale bar is 0.25 cm for IR images. b Demo of programmable IR Morse coding by applying pre-determined areal strains on the specifically designed trilayered Ecoflex/ EGaIn-1:2&1:6/Au film patterns. The scale bar is 0.25 cm for IR images.