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Highly Sensitive 1T‐MoS2 Pressure Sensor with Wide Linearity Based on Hierarchical Microstructures of Leaf Vein as Spacer
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2019-11-18 , DOI: 10.1002/aelm.201900916
Tingting Yang 1 , Haiyan Xiang 1 , Chaopeng Qin 2 , Yeru Liu 1 , Xiaorui Zhao 1 , Hang Liu 1 , Huimin Li 1 , Miray Ouzounian 3 , Guo Hong 4 , Hong Chen 5 , Qizhi Dong 1 , Travis Shihao Hu 3 , Song Liu 1
Affiliation  

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−1 over 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.

中文翻译:

基于叶脉作为间隔物的分层微结构的高灵敏度,宽线性度的1T-MoS2压力传感器

柔性压力传感器因其在未来的机器人技术和可穿戴设备中的有前途的应用而吸引了相当大的兴趣。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,从而大大提高了设备​​的小型化程度并降低了功耗。高性能压力传感器是基于聚二甲基硅氧烷泡沫(MoS 2 -PDMS)中的1T二硫化钼作为导电活性层,并使用分层的微网络叶脉作为隔离物而制备的。由于1T MoS 2 -PDMS具有出色的电导率和新颖的结构设计,与以前报道的器件相比,它们具有更好的性能,包括1036.04 kPa -1的高灵敏度。在1至23 kPa的宽线性范围内,响应时间短(<50 ms),可检测的超低压力极限为6.2 Pa,出色的重复加载和卸载稳定性(10000次循环)。此外,还探索了其在感测微弱压力和非接触微风以及监视不同的人类运动活动和生理信号中的应用。还研究了一些新的应用程序,包括水压测试和由小鱼游动引起的水的细微波动。结果证明了二维二维材料在压力传感器中的测试应用,可以在下一代电子皮肤和人工智能中广泛采用。
更新日期:2020-01-13
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