Tough Nano-Architectured Conductive Textile Made by Capillary Splicing of Carbon Nanotubes
Tough Nano-Architectured Conductive Textile Made by Capillary Splicing of Carbon Nanotubes
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DOI：
10.1002/adem.201600845
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发表时间：
2017-07-01
影响因子：
3.6
通讯作者：
Tawfick, Sameh
中科院分区：
文献类型：
--
作者：
Liang, Yue;Sias, David;Tawfick, Sameh
柔性电子器件需要导电且机械可靠的纳米级薄膜。然而，薄金属膜具有低断裂能，这限制了柔性器件的性能。我们展示了高导电性，强大的和坚韧的纳米结构的纺织品的设计和合成的毛细管拼接排列的碳纳米管（CNT）。由于碳纳米管之间存在很强的货车范德华力，原始碳纳米管网络的平均强度为170 MPa。织物的平均断裂能为16 kJ/m（2），比金属纳米膜高50倍。高韧性的结果从裂纹分叉和摩擦滞后在耗散区传播几毫米的裂纹尖端。这种材料适用于智能皮肤和柔性传感器等应用。
Flexible electronics require electrically conductive and mechanically reliable nanoscale thin films. However, thin metal films have low fracture energy, which limits the performance of flexible devices. We demonstrate the design and synthesis of highly conductive, strong and tough nano-architectured textile by capillary splicing of aligned carbon nanotubes (CNT). Owing to the strong van der Waals forces among CNTs, the pristine CNT network has average strength of 170MPa. The average fracture energy of the textile is 16kJ/m(2), 50 folds higher than metal nanofilms. The high toughness results from crack bifurcations and friction hysteresis in a dissipation zone propagating several millimeters ahead of the crack tip. This material is suitable for applications ranging from smart skin and flexible sensors.