Highly Sensitive 1T-MoS2 Pressure Sensor with Wide Linearity Based on Hierarchical Microstructures of Leaf Vein as Spacer
Highly Sensitive 1T-MoS2 Pressure Sensor with Wide Linearity Based on Hierarchical Microstructures of Leaf Vein as Spacer
复制标题
基于叶脉分层微结构作为间隔物的高灵敏度宽线性1T-MoS2压力传感器
DOI：
10.1002/aelm.201900916
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发表时间：
2019
影响因子：
6.2
通讯作者：
Liu Song
中科院分区：
文献类型：
--
作者：
Yang Tingting;Xiang Haiyan;Qin Chaopeng;Liu Yeru;Zhao Xiaorui;Liu Hang;Li Huimin;Ouzounian Miray;Hong Guo;Chen Hong;Dong Qizhi;Hu Travis Shihao;Liu Song
柔性压力传感器因其在未来机器人和可穿戴设备中的应用前景而引起了人们的极大兴趣。具有高灵敏度和宽线性范围的压力传感器不需要复杂的信号处理，并且大大增强了器件的小型化并降低了功耗。基于聚二甲基硅氧烷泡沫（MoS 2-PDMS）中的1 T二硫化钼作为导电活性层并以分级微网络叶脉作为间隔物制备高性能压力传感器。由于1 T MoS 2-PDMS优异的导电性和新颖的结构设计，它们表现出比以前报道的器件更好的性能，包括在1至23 kPa的宽线性范围内1036.04 kPa− 1的高灵敏度，快速响应时间（<50 ms），6.2 Pa的超低可检测压力极限，和优异的重复加载和卸载稳定性（10000次循环）。此外，它的应用在传感微压和非接触微风和监测不同的人体运动活动和生理信号进行了探索。还研究了一些新的应用，包括水压测试和小鱼游动引起的水中细微波动。结果证明了分层2D材料在压力传感器中的测试应用，这些压力传感器可以在下一代电子皮肤和人工智能中可行地采用。
Flexible pressure sensors have attracted considerable interest for their promising applications in future robotics and wearable devices. Pressure sensors with high sensitivity and a wide linear range do not require complex signal processing, and greatly enhance device miniaturization and decrease power consumption. High‐performance pressure sensors are prepared based on 1T molybdenum disulfide within polydimethylsiloxane foams (MoS2‐PDMS) as conductive active layer and with hierarchical micro‐network leaf vein as spacers. Due to the excellent electrical conductivity of 1T MoS2‐PDMS and the novel structural design, they exhibit better properties than previously reported devices, including a high sensitivity of 1036.04 kPa−1over a wide linear range from 1 to 23 kPa, fast response time (<50 ms), ultralow detectable pressure limit of 6.2 Pa, and excellent repetitive load and unloading stability (10 000 cycles). In addition, its applications in sensing subtle pressure and non‐contact breeze and in monitoring different human motion activities and physiological signals are explored. Some new applications including water pressure testing and subtle fluctuations in water caused by small fish swimming are also investigated. The results demonstrate the tested applications of layered 2D materials in pressure sensors that can be feasibly adopted in next‐generation electronic skin and artificial intelligence.