fig2

Figure 2. Characterization of EGaIn-AgNPs biphasic conductive ink. (A) Optical images of EGaIn ink and AgNPs ink; (B) Microscopic morphology of EGaIn-AgNPs ink; (C) Elemental distribution of EGaIn-AgNPs ink; (D) Schematic diagram of mechanical sintering; (E) EGaIn-AgNPs structure after mechanical sintering; (F) Elemental distribution after mechanical sintering; (G) XRD results of EGaIn-AgNPs ink with different ratios; XPS results for (H) In and (I) Ga elements. XRD: X-ray diffraction; XPS: X-ray photoelectron spectroscopy; LM: liquid metal; EGaIn-AgNPs: eutectic gallium indium-silver nanoparticles.