▎ 摘　　要

There is an urgent need for developing flexible pressure sensors with ultra-high pressure-resolution and wide linear range to expand the application of wearable electronic devices. Here, a strategy was proposed for fabri-cating a LIG composite with wave-shaped array and multi-scale porous structure for wide-range and high -precision pressure detection. The synergism of the internal three-dimension porous structure and the inter -layer interlocked wave-shaped array endows the assembled double-layer LIG composite with numerous vari-able electrical conductive paths and easy deformation. Therefore, great improvements have been achieved in detection broad range and accuracy, exhibiting a large linearity range (0-100 kPa) and high pressure-resolution (millipascal-scale) over the full linearity range. These sensing properties make the double-layer LIG composites feasible for detecting subtle physiological signals and monitoring large human motions. Meanwhile, integrating the synthesis of graphene as active material and the design of flexible sensing structure by laser direct writing (LDW) technique provides an effective strategy for manufacturing high performance sensors with simple and low cost.