Piezoresistive Sensor with High Elasticity Based on 3D Hybrid Network of Sponge@CNTs@Ag NPs

Pressure sensors with high elasticity are in great demand for the realization of intelligent sensing, but there is a need to develope a simple, inexpensive, and scalable method for the manufacture of the sensors. Here, we reported an efficient, simple, facile, and repeatable "dipping and coating" process to manufacture a piezoresistive sensor with high elasticity, based on homogeneous 3D hybrid network of carbon nanotubes@silver nanoparticles (CNTs@Ag NPs) anchored on a skeleton sponge. Highly elastic, sensitive, and wearable sensors are obtained using the porous structure of sponge and the synergy effect of CNTs/Ag NPs. Our sensor was also tested for over 2000 compression-release cycles, exhibiting excellent elasticity and cycling stability. Sensors with high performance and a simple fabrication process are promising devices for commercial production in various electronic devices, for example, sport performance monitoring and man-machine interfaces.

为了实现智能传感，高弹性压力传感器有很大需求，但需要开发一种简单、廉价且可扩展的传感器制造方法。在此，我们报道了一种高效、简单、便捷且可重复的“浸渍和涂覆”工艺，用于制造一种基于锚定在骨架海绵上的碳纳米管@银纳米粒子（CNTs@Ag NPs）均匀三维混合网络的高弹性压阻式传感器。利用海绵的多孔结构以及碳纳米管/银纳米粒子的协同效应，获得了高弹性、灵敏且可穿戴的传感器。我们的传感器还经过了2000多次压缩 - 释放循环测试，表现出优异的弹性和循环稳定性。具有高性能和简单制造工艺的传感器在各种电子设备的商业化生产中是很有前景的器件，例如运动性能监测和人机界面。