The use of flexible pressure sensors has significantly advanced and improved human life. However, several issues are hindering their applicability such as the difficulty to achieve high sensitivity over a wide pressure measurement range. Herein, a one-step foaming method and hydrothermal approach were used to fabricate a three-dimensional conductive porous foam comprising polyurethane, carbon nanotube, and polyaniline. The sensor exhibits excellent electrical conductivity due to its cellular foam structure, while its high durability enables a large response output across an extremely broad range (0–30 000 kPa). The sensor also exhibits exceptional stability over 1000 loading/unloading cycles, a fast response time of 80 ms, and high sensitivity of 0.019 53 kPa⁻¹ (0–200 kPa), 0.126 48 kPa⁻¹ (200–5000 kPa), and 0.038 85 kPa⁻¹ (5000–30 000 kPa). Furthermore, rational material selection and structural design allows the sensor to monitor low- to high-signal stimuli, thereby providing a reference for the design of other large-scale sensors.

中文翻译：

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基于聚苯乙烯泡沫的超弹性超宽量程柔性压力传感器

柔性压力传感器的使用显着改善了人类的生活。然而，有几个问题阻碍了它们的应用，例如难以在宽压力测量范围内实现高灵敏度。在此，采用一步发泡法和水热法制备包含聚氨酯、碳纳米管和聚苯胺的三维导电多孔泡沫。由于其多孔泡沫结构，该传感器表现出出色的导电性，同时其高耐用性可在极宽的范围（0–30 000 kPa）内实现较大的响应输出。该传感器还表现出超过 1000 次加载/卸载循环的出色稳定性、80 毫秒的快速响应时间以及 0.019 53 kPa ⁻¹ (0–200 kPa)、0.126 48 kPa ^{−1的高灵敏度}(200–5000 kPa)，和 0.038·85 kPa ^-1 (5000–30 000 kPa)。此外，合理的材料选择和结构设计使传感器能够监测低到高信号刺激，从而为其他大型传感器的设计提供参考。