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Maskless Formation of Conductive Carbon Layer on Leather for Highly Sensitive Flexible Strain Sensors
Advanced Electronic Materials ( IF 6.2 ) Pub Date : 2020-08-16 , DOI: 10.1002/aelm.202000549
Ziyang Wang 1 , Bo Chen 2 , Shibin Sun 3 , Likun Pan 4 , Yang Gao 1
Affiliation  

Development of strain sensors on flexible and breathable leather or textile has potential applications in Internet of Things, human–machine interfaces, and motion detection. Nevertheless, the fabrication of strain sensors with high performance on the above substrates in a maskless, scalable, and highly efficient manner is still a challenge. In this study, highly sensitive strain sensors are mask‐freely fabricated on leather by a highly efficient and scalable laser direct writing (LDW) technique in open air without using any additional precursors. The strain sensors are constructed by the carbon flake synthesized by LDW carbonization of collagen fibers in the leather. The LDW carbonized leather‐based device provides maximum sensitivities of ≈2009.5 and ≈50.9 for tension and compression strain detection, respectively. Additionally, the device has a minimum detection strain of 0.005% and a good mechanical stability over 10 000 bending cycles. The high performance of the flexible strain sensors as well as the developed maskless, scalable and highly efficient LDW technique endows the promising applications of the devices in human motion monitoring and external stimuli detection.

中文翻译:

用于高灵敏柔性应变传感器的皮革上导电碳层的无掩模形成

在柔性和透气皮革或织物上开发应变传感器在物联网,人机界面和运动检测中具有潜在的应用。然而,以无掩模,可缩放和高效的方式在上述基板上制造高性能的应变传感器仍然是挑战。在这项研究中,通过在露天环境中使用高效且可扩展的激光直写(LDW)技术在皮革上无掩模地制造高灵敏度应变传感器,而无需使用任何其他前体。应变传感器由碳薄片组成,碳薄片是通过皮革中胶原纤维的LDW碳化而合成的。LDW碳化皮革制设备分别为拉伸和压缩应变检测提供≈2009.5和≈50.9的最大灵敏度。另外,该设备的最小检测应变为0.005%,在10000次弯曲循环中具有良好的机械稳定性。柔性应变传感器的高性能以及已开发的无掩模,可扩展且高效的LDW技术,使得该设备在人体运动监测和外部刺激检测方面的应用前景广阔。
更新日期:2020-09-08
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