Recoverable/stretchable polymer spring with embedded CNTs electrical routing for large-area electronic applications

W. Sung, Chao-Lin Cheng, C. Hong, W. Fang
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Abstract

This study presents a large-area chip-network using polymer stretchable spring with embedded carbon nanotubes (CNTs). The CNTs as piezo-resistive sensing element and metal routing was located on the node and spring to achieve functional device. The mechanical and electrical connections of surrounding devices were linked by CNTs-polymer stretchable spring. The polymer spring stretches and expands the device nodes by several times of magnitude area to establish a 2D chip-network system. Merits of this approach: (1) polymer stretchable spring with large fracture strain acts as mechanical connection; (2) the polymer spring has better recoverability after stretching; (3) vertically-aligned CNTs are exploited as electrical routing and promising sensing material for different stress state; (4) the chip-network with flexibility can apply to curved surfaces.
可回收/可拉伸聚合物弹簧,嵌入式碳纳米管电气布线,用于大面积电子应用
本研究提出了一种使用嵌入碳纳米管(CNTs)的聚合物可拉伸弹簧的大面积芯片网络。将CNTs作为压阻传感元件和金属布线置于节点和弹簧上,实现功能器件。周围器件的机械和电气连接由碳纳米管聚合物可拉伸弹簧连接。聚合物弹簧将器件节点拉伸并扩展数倍的面积,以建立二维芯片网络系统。该方法的优点:(1)采用断裂应变大的聚合物可拉伸弹簧作为机械连接;(2)聚合物弹簧拉伸后具有较好的恢复性;(3)垂直排列的碳纳米管被开发为不同应力状态下的电路由和有前途的传感材料;(4)具有柔性的芯片网络可适用于曲面。
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