Double-Twisted Conductive Smart Threads Comprising a Homogeneously and a Gradient-Coated Thread for Multidimensional Flexible Pressure-Sensing Devices
Double-Twisted Conductive Smart Threads Comprising a Homogeneously and a Gradient-Coated Thread for Multidimensional Flexible Pressure-Sensing Devices
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DOI：
10.1002/adfm.201600078
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发表时间：
2016-06-20
影响因子：
19
通讯作者：
Lubineau, Gilles
中科院分区：
文献类型：
--
作者：
Tai, Yanlong;Lubineau, Gilles
基于光纤的柔性压力传感系统由于其作为电子皮肤的应用前景而引起了人们的关注。在这里，一种新的柔性压力传感装置的基础上，聚二甲基硅氧烷膜仪表与双扭智能线程（DTST）的报告。DTST是由两根导电线制成的，这些导电线是用碳纳米管包裹棉线而成的。一个螺纹涂覆有均匀厚度的单壁碳纳米管（SWCNT）以检测所施加的载荷的强度，另一个螺纹涂覆有梯度厚度的SWCNT以识别载荷沿着螺纹的位置。系统地分析了DTST精确感知载荷的机理和能力。结果表明，所制造的1D，2D和3D传感设备可以用于预测施加的负载的强度和位置。该传感器具有高灵敏度（约0.1%和1.56% kPa之间）和可调分辨率，良好的循环弹性（>104个循环）和短响应时间（最小2.5 Hz）。所提出的策略是一个可行的替代设计的简单，低成本的压力传感器。
Fiber-based, flexible pressure-sensing systems have attracted attention recently due to their promising application as electronic skins. Here, a new kind of flexible pressure-sensing device based on a polydimethylsiloxane membrane instrumented with double-twisted smart threads (DTSTs) is reported. DTSTs are made of two conductive threads obtained by coating cotton threads with carbon nanotubes. One thread is coated with a homogeneous thickness of single-walled carbon nanotubes (SWCNTs) to detect the intensity of an applied load and the other is coated with a graded thickness of SWCNTs to identify the position of the load along the thread. The mechanism and capacity of DTSTs to accurately sense an applied load are systematically analyzed. Results demonstrate that the fabricated 1D, 2D, and 3D sensing devices can be used to predict both the intensity and the position of an applied load. The sensors feature high sensitivity (between approximate to 0.1% and 1.56% kPa) and tunable resolution, good cycling resilience (>104 cycles), and a short response time (minimum 2.5 Hz). The presented strategy is a viable alternative for the design of simple, low-cost pressure sensors.