▎ 摘　　要

In pursuit of the next-generation pressure sensors, the fabrication of graphene-based devices is considered to be one of the most promising approaches to address the unsatisfied sensitivity within a wide pressure range. Here, an ab initio design based on the graphene block is proposed to realize a high-performance and multimeter-like range switchable pressure sensor. The sensor contains three designed graphene-based foams with different initial resistances, which enable continuous resistance-change behavior induced by the pressure. Specifically, the reduced graphene oxide (rGO) foam-based sensor demonstrates a three times resistance change within the pressure range of 0-300 Pa, the rGO/polyurethane (rGO/PU) foam-based sensor presents a six times resistance change within the pressure range of 0.09-30 kPa, and the selenium-functionalized rGO/PU (SFrGO/PU) foam-based sensor displays a resistance change of more than 1000-fold within the pressure range of 1-72 kPa. Such different initial resistances and responses endow the device with controllable estimating pressure ranges, offering a switchable multimeter-like function for various applications. This ab initio design, which is applicable to various 2D materials and operation modes, can provide a facile and feasible approach toward the next-generation pressure sensors and other application fields related to 2D materials.