An ultrahigh-performance multi-functional sensor integrating strain, temperature and humidity sensing has been investigated. The sensing medium is only composed of carbon nanocoils (CNCs) and carbon nanotubes (CNTs). For strain sensing, due to the high elasticity provided by CNC skeleton and the recoverable conductive cracks with a width of hundreds of microns generated by the dense CNT film, the sensor delivers excellent sensing properties, including the advantages of ultrahigh gauge factor (up to 352085), wide strain range (up to 100%), high strain resolution (0.01%), fast response time (16 ms) and robust cycle stability (10000 cycles). In addition, this all–carbon sensing medium can also be used for temperature and humidity sensing in an ultrawide temperature range of 7 to 400 K and humidity sensing over a relative humidity range of 10% to 80% with a high signal-to-noise ratios. It is worth noting that the integrated multi-functional sensor can simultaneously detect the stimuli of strain, temperature and humidity with low coupling. Multiple applications can be detected accurately, such as human motions, breathing behavior, pulse wave, different vibration modes and so on. Therefore, the all-carbon-based sensor provides a promising strategy in developing multi-functional integration for smart wearable devices, electronic skins, and other multi-functional sensing devices.

研究了一种集成应变、温度和湿度传感的超高性能多功能传感器。传感介质仅由碳纳米线圈（CNC）和碳纳米管（CNT）组成。对于应变传感，由于 CNC 骨架提供的高弹性和致密的 CNT 薄膜产生的可恢复的数百微米宽的导电裂缝，传感器具有出色的传感性能，包括超高应变系数（高达 352085 )、宽应变范围（高达 100%）、高应变分辨率（0.01%）、快速响应时间（16 ms）和强大的循环稳定性（10000 次循环）。此外，这种全碳传感介质还可用于在 7 至 400 K 的超宽温度范围内进行温度和湿度传感，以及在 10% 至 80% 的相对湿度范围内以高信噪比进行湿度传感。值得注意的是，集成的多功能传感器可以低耦合同时检测应变、温度和湿度的刺激。可以准确检测多种应用，例如人体运动、呼吸行为、脉搏波、不同的振动模式等。因此，全碳基传感器为开发智能可穿戴设备、电子皮肤和其他多功能传感设备的多功能集成提供了一个有前景的策略。值得注意的是，集成的多功能传感器可以低耦合同时检测应变、温度和湿度的刺激。可以准确检测多种应用，例如人体运动、呼吸行为、脉搏波、不同的振动模式等。因此，全碳基传感器为开发智能可穿戴设备、电子皮肤和其他多功能传感设备的多功能集成提供了一个有前景的策略。值得注意的是，集成的多功能传感器可以低耦合同时检测应变、温度和湿度的刺激。可以准确检测多种应用，例如人体运动、呼吸行为、脉搏波、不同的振动模式等。因此，全碳基传感器为开发智能可穿戴设备、电子皮肤和其他多功能传感设备的多功能集成提供了一个有前景的策略。