Stretchable and highly sensitive graphene-on-polymer strain sensors

被引：411

作者：

Li, Xiao ^{[1
]}

Zhang, Rujing ^{[1
]}

Yu, Wenjian ^{[2
]}

Wang, Kunlin ^{[1
]}

Wei, Jinquan ^{[1
]}

Wu, Dehai ^{[1
]}

Cao, Anyuan ^{[3
]}

Li, Zhihong ^{[4
]}

Cheng, Yao ^{[5
]}

Zheng, Quanshui ^{[5
]}

Ruoff, Rodney S. ^{[6
,7
]}

Zhu, Hongwei ^{[1
,5
]}

机构：

[1] Tsinghua Univ, Dept Mech Engn, Key Lab Adv Mfg Mat Proc Technol, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Comp Sci & Technol, Beijing 100084, Peoples R China

[3] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China

[4] Peking Univ, Inst Microelect, Natl Key Lab Sci & Technol Micro Nano Fabricat, Beijing 100871, Peoples R China

[5] Tsinghua Univ, CNMM, Beijing 100084, Peoples R China

[6] Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA

[7] Univ Texas Austin, Mat Sci & Engn Program, Austin, TX 78712 USA

来源：

SCIENTIFIC REPORTS | 2012年 / 2卷

基金：

美国国家科学基金会; 北京市自然科学基金;

关键词：

CARBON; FILMS;

D O I：

10.1038/srep00870

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The use of nanomaterials for strain sensors has attracted attention due to their unique electromechanical properties. However, nanomaterials have yet to overcome many technological obstacles and thus are not yet the preferred material for strain sensors. In this work, we investigated graphene woven fabrics (GWFs) for strain sensing. Different than graphene films, GWFs undergo significant changes in their polycrystalline structures along with high-density crack formation and propagation mechanically deformed. The electrical resistance of GWFs increases exponentially with tensile strain with gauge factors of similar to 10(3) under 2 similar to 6% strains and similar to 10(6) under higher strains that are the highest thus far reported, due to its woven mesh configuration and fracture behavior, making it an ideal structure for sensing tensile deformation by changes in strain. The main mechanism is investigated, resulting in a theoretical model that predicts very well the observed behavior.

引用

页数：6

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