Deformable and wearable carbon nanotube microwire-based sensors for ultrasensitive monitoring of strain, pressure and torsion.
Deformable and wearable carbon nanotube microwire-based sensors for ultrasensitive monitoring of strain, pressure and torsion.
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DOI：
10.1039/c6nr08096k
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发表时间：
2017-01
期刊：
影响因子：
6.7
通讯作者：
Jian Zhou;Xuezhu Xu;Hudong Yu;G. Lubineau
中科院分区：
文献类型：
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作者：
Jian Zhou;Xuezhu Xu;Hudong Yu;G. Lubineau
人类关节在中度脱位后有能力恢复其机械功能。这种非凡的能力启发我们开发了一种“骨皮状”机械传感器，可以检测断电恢复后的多种机械变形。为了制造这种传感器，我们将低强度湿纺单壁碳纳米管线嵌入聚二甲基硅氧烷中。当施加各种机械刺激时，导线会碎裂，即使在电气故障/断开之后，其电阻也会以可逆、可恢复的方式急剧增加（从 360 Ω 到几乎无穷大）。该传感器足够灵敏（15%单轴应变下的应变系数为105，0.9 MPa压力下的压力灵敏度为105 MPa-1，扭转角为60°时的扭转灵敏度为860），可用于精确感测各种变形模式，这表明该传感器在可穿戴和可变形机械传感器中具有广泛的应用。
Human joints have the ability to recover their mechanical functions after moderate dislocation. This remarkable capability inspired us to develop a "bone-skin-like" mechanosensor that can detect multiple mechanical deformations after recovery from electrical disconnection. To create this sensor, we embedded a low-strength, wet-spun single-walled carbon nanotube wire in polydimethylsiloxane. When various mechanical stimuli are applied, the wire gets fragmented and its resistance increases dramatically (from 360 Ω to practically infinity) in a reversible, recoverable manner even after the electrical failure/disconnection. The sensor is sensitive enough (a gauge factor of 105 at 15% uniaxial strain, a pressure sensitivity of 105 MPa-1 at 0.9 MPa pressure and a torsion sensitivity of 860 at a twisting angle of 60°) to be used for accurate sensing of a variety of deformation modes, suggesting a wide range of applications in wearable and deformable mechanical sensors.