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Carbon nanotube-based synthetic gecko tapes

机译:碳纳米管基合成壁虎胶带

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摘要

We have developed a synthetic gecko tape by transferring mi-cropatterned carbon nanotube arrays onto flexible polymer tape based on the hierarchical structure found on the foot of a gecko lizard. The gecko tape can support a shear stress (36 N/cm~2) nearly four times higher than the gecko foot and sticks to a variety of surfaces, including Teflon. Both the micrometer-size setae (replicated by nanotube bundles) and nanometer-size spatulas (individual nanotubes) are necessary to achieve macroscopic shear adhesion and to translate the weak van der Waals interactions into high shear forces. We have demonstrated for the first time a macroscopic flexible patch that can be used repeatedly with peeling and adhesive properties better than the natural gecko foot. The carbon nanotube-based tape offers an excellent synthetic option as a dry conductive reversible adhesive in microelectronics, robotics, and space applications.
机译:我们已经根据壁虎蜥蜴脚上的分层结构,通过将微cropatterned碳纳米管阵列转移到柔性聚合物带上,开发出了一种合成壁虎带。壁虎胶带可以承受的剪切应力(36 N / cm〜2)是壁虎脚的近四倍,并且可以粘附在包括特氟龙在内的各种表面上。微米级的刚毛(由纳米管束复制)和纳米级的刮刀(单个纳米管)都是实现宏观剪切粘附力并将弱的范德华相互作用转化为高剪切力所必需的。我们首次展示了一种宏观柔性贴片,与天然壁虎脚相比,这种贴片具有更好的剥离和粘合性能,可以重复使用。碳纳米管基胶带可作为微电子,机器人技术和太空应用中的干导电可逆粘合剂提供出色的合成选择。

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