Abstract Sensitivity and stretchability are two key physical parameters for advanced piezoresistive sensors, especially for those that can be incorporated into clothing or attached directly on human body. Big challenge remains in achieving both in single device. Here, to obtain high strain sensitivity and wide measurement range simultaneously, a nano-engineered bilayer composed of cracked carbon nanotube (CNT) network and elastomer infiltrated CNT composite has been developed. This design takes advantage of the cracked CNT network layer which is able to provide the sensor with high resistance sensitivity (gauge factor between 8 and 207), wide strain measurement range (>50%) and good linearity (R2 > 93%) in three strain ranges. The coupled elastomer nanocomposite layer is utilized to confine the crack evolution resulting in significantly improved stability and reproducibility (>10,000 loading-unloading cycles). Application of such bilayer construction also processes fast response time (

中文翻译：

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由破裂的碳纳米管网络/复合双层构建的纳米工程高灵敏度和稳定的软应变传感器

摘要 灵敏度和伸缩性是先进压阻式传感器的两个关键物理参数，尤其是那些可以集成到衣服中或直接贴在人体上的传感器。在单个设备中实现两者仍然存在巨大挑战。在这里，为了同时获得高应变灵敏度和宽测量范围，开发了一种由破裂的碳纳米管 (CNT) 网络和弹性体渗透的 CNT 复合材料组成的纳米工程双层。这种设计利用了破裂的 CNT 网络层，它能够在三个方面为传感器提供高电阻灵敏度（应变系数在 8 和 207 之间）、宽应变测量范围（> 50%）和良好的线性度（R2 > 93%）应变范围。耦合的弹性体纳米复合材料层用于限制裂纹演化，从而显着提高稳定性和再现性（> 10,000 次加载-卸载循环）。这种双层结构的应用还处理了快速的响应时间（