A stretchable carbon nanotube strain sensor for human-motion detection
A stretchable carbon nanotube strain sensor for human-motion detection
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DOI：
10.1038/nnano.2011.36
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发表时间：
2011-05-01
影响因子：
38.3
通讯作者：
Hata, Kenji
中科院分区：
文献类型：
--
作者：
Yamada, Takeo;Hayamizu, Yuhei;Hata, Kenji
由可拉伸电子材料制成的设备可以被集成到衣服中或直接附着在身体上。这种材料通常是通过设计传统的刚性材料如硅来制备的，而不是通过开发新材料。在这里，我们报告了一类可穿戴和可拉伸的设备制造的薄膜对齐的单壁碳纳米管。当拉伸时，纳米管膜破裂成间隙和岛，以及桥接间隙的束。这种机制允许薄膜作为应变传感器，能够测量高达280%的应变（比传统的金属应变计高50倍），具有高耐用性，快速响应和低蠕变。我们将碳纳米管传感器组装在长筒袜、绷带和手套上，制造出可以检测不同类型人体运动的设备，包括运动、打字、呼吸和讲话。
Devices made from stretchable electronic materials could be incorporated into clothing or attached directly to the body. Such materials have typically been prepared by engineering conventional rigid materials such as silicon, rather than by developing new materials. Here, we report a class of wearable and stretchable devices fabricated from thin films of aligned single-walled carbon nanotubes. When stretched, the nanotube films fracture into gaps and islands, and bundles bridging the gaps. This mechanism allows the films to act as strain sensors capable of measuring strains up to 280% (50 times more than conventional metal strain gauges), with high durability, fast response and low creep. We assembled the carbon-nanotube sensors on stockings, bandages and gloves to fabricate devices that can detect different types of human motion, including movement, typing, breathing and speech.