Ultrasensitive, Stretchable Strain Sensors Based on Fragmented Carbon Nanotube Papers.
Ultrasensitive, Stretchable Strain Sensors Based on Fragmented Carbon Nanotube Papers.
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DOI：
10.1021/acsami.6b15195
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发表时间：
2017-01
影响因子：
9.5
通讯作者：
Jian Zhou;Hudong Yu;Xuezhu Xu;F. Han;G. Lubineau
中科院分区：
文献类型：
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作者：
Jian Zhou;Hudong Yu;Xuezhu Xu;F. Han;G. Lubineau
同时具有超高灵敏度和高拉伸性的应变传感器的开发仍然是一个挑战。我们证明了基于嵌在聚二甲基硅氧烷（PDMS）中的片段化单壁碳纳米管（SWCNT）纸的应变传感器即使在非常高的应变水平下（在50%的应变下，应变因子超过107）也可以维持其灵敏度。这种记录灵敏度归因于SWCNT纸的低初始电阻（5 - 28 Ω）和由破裂区域中SWCNT的膨胀网络控制的电阻的宽变化（高达106 Ω）。传感器响应在10000次20%应变循环后几乎保持不变，证明了该技术的稳健性。这种基于碎片的传感系统为设计高灵敏度可拉伸传感器带来了机会。
The development of strain sensors featuring both ultra high sensitivity and high stretchability is still a challenge. We demonstrate that strain sensors based on fragmented single-walled carbon nanotube (SWCNT) paper embedded in poly(dimethylsiloxane) (PDMS) can sustain their sensitivity even at very high strain levels (with a gauge factor of over 107 at 50% strain). This record sensitivity is ascribed to the low initial electrical resistance (5-28 Ω) of the SWCNT paper and the wide change in resistance (up to 106 Ω) governed by the percolated network of SWCNT in the cracked region. The sensor response remains nearly unchanged after 10 000 strain cycles at 20% proving the robustness of this technology. This fragmentation based sensing system brings opportunities to engineer highly sensitive stretchable sensors.