Kirigami-inspired strain-insensitive sensors based on atomically-thin materials
Kirigami-inspired strain-insensitive sensors based on atomically-thin materials
复制标题
DOI：
10.1016/j.mattod.2019.08.013
复制
发表时间：
2020-04-01
期刊：
影响因子：
24.2
通讯作者：
Nam, SungWoo
中科院分区：
文献类型：
--
作者：
Yong, Keong;De, Subhadeep;Nam, SungWoo
这项工作报告kirigami启发架构的石墨烯应变不敏感，表面共形可拉伸多功能电极和传感器。kirigami启发的石墨烯电极表现出高达240%的施加拉伸应变和混合应变状态（包括拉伸、扭曲和/或剪切的组合）的应变不敏感的电性能。此外，大量的kirigami设计的石墨烯计算探索预测在不同的应变条件下的变形形态，并实现可控的拉伸性。值得注意的是，应变不敏感的石墨烯场效应晶体管和在130%拉伸和360度扭转下的光电检测是通过经由在kirigami凹口附近的应变响应面外屈曲策略性地重新分布远离有源感测元件的应力集中来实现的。超薄外形、贴合皮肤和透气缺口的结合表明，基于原子级薄材料的kirigami灵感平台适用于更广泛的可穿戴技术。
This work reports kirigami-inspired architectures of graphene for strain-insensitive, surface-conformal stretchable multifunctional electrodes and sensors. The kirigami-inspired graphene electrode exhibits strain-insensitive electrical properties up to 240% applied tensile strain and mixed strain states, including a combination of stretching, twisting, and/or shearing. Moreover, a multitude of kirigami designs of graphene are explored computationally to predict deformation morphologies under different strain conditions and to achieve controllable stretchability. Notably, strain-insensitive graphene field-effect transistor and photodetection under 130% stretching and 360 degrees torsion are achieved by strategically redistributing stress concentrations away from the active sensing elements via strain-responsive out-of-plane buckling at the vicinity of the kirigami notches. The combination of ultra-thin form factor, conformity on skin, and breathable notches suggests the applicability of kirigami-inspired platform based on atomically-thin materials in a broader set of wearable technology.