Stress and Magnetic Field Bimode Detection Sensors Based on Flexible Cl/CNTs-PDMS Sponges
Stress and Magnetic Field Bimode Detection Sensors Based on Flexible Cl/CNTs-PDMS Sponges
复制标题
基于柔性 CI/CNT – PDMS 海绵的应力和磁场双模检测传感器
DOI：
10.1021/acsami.8b11333
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发表时间：
2018-09-12
影响因子：
9.5
通讯作者：
Gong, Xinglong
中科院分区：
文献类型：
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作者：
Ding, Li;Xuan, Shouhu;Gong, Xinglong
这项工作报道了具有高柔韧性和低密度的多孔羰基铁颗粒/多壁碳纳米管聚二甲基硅氧烷复合材料（PCMC）。与固体产品相比，多孔PCMC具有更大的伸长率和变形量。由于优异的磁机电耦合性能，柔性复合材料对外部应力和磁场表现出双模敏感性。通常，当压缩应变和拉伸应变分别为 60% 和 50% 时，PCMC 的归一化电阻变化 (Delta R/R) 分别达到 82.8% 和 52.2%。此外，由弯曲、扭曲和磁应力引起的Delta R/R也发生显着变化。当施加144 mT磁场时，PCMC的Delta R/R增加了3.6%。为了进一步理解磁机电耦合机制，提出并分析了导电网络传感模型。最后，基于双模PCMC传感器阵列，开发了一种智能棋盘，可以精确区分不同质量和磁铁的特殊棋子。这项研究为人造电子和软机器人领域的下一代三维智能传感器提供了一种新的制造方法。
This work reports porous carbonyl iron particles/multiwalled carbon nanotubes polydimethylsiloxane composites (PCMCs) with high flexibility and low density. In comparison to the solid product, the porous PCMC possesses a larger elongation and deformation. Because of the excellent magnetic mechanic electric coupling performance, the flexible composite exhibits bimode sensitivity to both the external stresses and magnetic field. Typically, the normalized resistance variation (Delta R/R) of PCMC reaches 82.8% and 52.2% when the compression strain and tension strain are 60% and 50%, respectively. Moreover, the Delta R/R induced by bending, twisting, and magnetostress also changes remarkably. When a 144 mT magnetic field is applied, the Delta R/R of PCMC increases with 3.6%. To further understand the magnetic mechanic electric coupling mechanism, a conductive network sensing model is proposed and analyzed. Finally, on the basis of the bimode PCMC sensor array, a smart chessboard which can precisely discriminate special chesses with different masses and magnets is developed. This study provides a new fabrication method for next-generation three-dimensional smart sensors toward artificial electronics and soft robotics.