“…For the past few years, flexible pressure sensors have been extensively applied in various fields, such as human–machine interfaces and electronic skins. − Thus far, in order to develop high-performance flexible pressure sensors, various pressure-sensing mechanisms (like piezoresistivity, capacitance, piezoelectricity, and triboelectricity) have been adopted. − In particular, piezoresistive sensors have numerous strengths such as high compatibility with a readout circuit, fast response, simple device structure, and excellent stability. − The sensing material plays a decisive role in the performance of piezoresistive pressure sensors. Carbon nanotubes (CNTs) have wide perspective applications in pressure sensors due to their superior mechanical and electrical properties. − However, a pure CNT sensor is still limited by its low sensitivity, which restrains its detection ability toward micropressure changes, such as a wrist pulse.…”