Highly sensitive, reliable and flexible piezoresistive pressure sensors based on graphene-PDMS @ sponge
Highly sensitive, reliable and flexible piezoresistive pressure sensors based on graphene-PDMS @ sponge
复制标题
基于石墨烯-PDMS@海绵的高灵敏度、可靠且灵活的压阻压力传感器
DOI：
10.1088/1361-6439/ab948f
复制
发表时间：
2020-08-01
影响因子：
2.3
通讯作者：
Sang, Shengbo
中科院分区：
文献类型：
--
作者：
Jing, Zhu;Zhang, Qiang;Sang, Shengbo
在三维骨架结构支撑柔性压力传感器的研究中，纳米材料与骨架结构的结合是一个有待进一步解决的难题。本文利用PDMS将石墨烯固定在海绵骨架上，制备了一种基于石墨烯-PDMS @海绵的压阻式传感器。所制备的压阻式传感器具有高弹性（应变可达85%）、高灵敏度（0.075 KPa−1）、宽响应范围（0-50 KPa）和高稳定性（2000次循环压力测试）。压阻式传感器用于检测血压、心跳以及手指弯曲、肘部运动和膝盖下蹲等人体运动，通过海绵、PDMS和石墨烯的协同作用，显示出制备的传感器具有良好的一致性和稳定性。石墨烯- pdms @海绵传感器在医学测试和电子皮肤方面显示出潜在的应用前景。
In the research of flexible pressure sensors supported by three-dimensional skeleton structure, the combination of nanomaterials and skeleton structure is a difficult problem to be further solved. Herein, a piezoresistive sensor based on the graphene-PDMS @ sponge is prepared by fixing graphene on a sponge skeleton using PDMS. The as-prepared piezoresistive sensor exhibits high elasticity (strain up to 85%), high sensitivity (0.075 K Pa−1), a wide responding range (0–50 KPa) and high stability (2000 cycles pressure test). The piezoresistive sensor is used to detect blood pressure, heartbeat and human movements including finger bending, elbow movement and knee squatting, which shows good consistency and stability of the as-prepared sensor through the synergy of sponge, PDMS and graphene. The graphene-PDMS @ sponge sensor shows potential applications in medical testing and electronic skin.