fig2

Figure 2. Fabrication and characterization of the SPCI. (A) Integration workflow of the SPCI with a serpentine-pattern circuit, including the fabrication of SPCI and the processing steps for the serpentine circuit; (B) Relationship between Al₂O₃ particle size and scattering efficiency; (C) Electromagnetic simulations of the electric-field distribution in SPCI under light illumination at wavelengths of 0.5, 1.0, and 1.5 μm; (D) Reflectance and emissivity spectra of SPCI (40 wt% Al₂O₃); (E) SEM image SPCI surface (Al₂O₃ particles are highlighted in pink); (F) Cross-sectional micrograph of SPCI; (G) Stress-strain curves of SPCI, showing the effect of varying Al₂O₃ loading ratios on tensile performance. Photographed by the authors. SPCI: Stretchable passive cooling interface; LM: liquid metal.