Large-Area Compliant, Low-Cost, and Versatile Pressure-Sensing Platform Based on Microcrack-Designed Carbon Black@Polyurethane Sponge for Human-Machine Interfacing

摘要: It is a challenge to manufacture pressure-sensing materials that possess flexibility, high sensitivity, large-area compliance, and capability detect both tiny large motions for the development of artificial intelligence products. Herein, very simple low-cost approach proposed fabricate versatile pressure sensors based on microcrack-designed carbon black (CB)@polyurethane (PU) sponges via natural polymer-mediated water-based layer-by-layer assembly. These are capable satisfying requirements ultrasmall as well motion monitoring. The versatility these benefits from two aspects: microcrack junction sensing mechanism detecting (91 Pa pressure, 0.2% strain) inspired by spider sensory system compressive contact CB@PU conductive backbones monitoring (16.4 kPa 60% strain). Furthermore, exhibit excellent fast response times (<20 ms), good reproducibility over 50 000 cycles. This study also demonstrates various applications, ranging speech recognition, health monitoring, bodily detection electronic skin. desirable comprehensive performance our sensors, which comparable recently reported devices, together with their significant advantages low-cost, easy fabrication, especially versatility, makes them attractive in future intelligence.