Controllable formation of periodic wrinkles in Marangoni-driven self-assembled graphene film for sensitive strain detection  

基于马兰戈尼效应制备具有周期性褶皱结构的石墨烯薄膜及其在高灵敏应变探测中的应用

作　　者：Yufei Jia Wenjun Chen Chen Ye Rongliang Yang Leilei Yang Zian Zhang Qingmei Hu Binghao Liang Bo-Ru Yang Zikang Tang Cheng-Te Lin Xuchun Gui 贾宇飞;陈文骏;叶辰;杨荣亮;杨蕾蕾;张子安;胡清梅;梁秉豪;杨柏儒;汤子康;林正得;桂许春(State Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510275,China;Key Laboratory of Marine Materials and Related Technologies,Zhejiang Key Laboratory of Marine Materials and Protective Technologies,Ningbo Institute of Materials Technology and Engineering(NIMTE),Chinese Academy of Sciences,Ningbo 315201,China;Institute of Applied Physics and Materials Engineering,University of Macao,Avenida da Universidade,Taipa,Macao 999078,China)

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510275,China [2]Key Laboratory of Marine Materials and Related Technologies,Zhejiang Key Laboratory of Marine Materials and Protective Technologies,Ningbo Institute of Materials Technology and Engineering(NIMTE),Chinese Academy of Sciences,Ningbo 315201,China [3]Institute of Applied Physics and Materials Engineering,University of Macao,Avenida da Universidade,Taipa,Macao 999078,China

出　　处：《Science China Materials》2020年第10期1983-1992,共10页中国科学（材料科学（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(51772335);the Science and Technology Program of Guangzhou(201904010450).

摘　　要：Controllable formation of microstructures in the assembled graphene film could tune the physical properties and broaden its applications in flexible electronics.Many efforts have been made to control the formation of wrinkles and ripples in graphene films.However,the formation of orderly wrinkles in graphene film remains a challenge.Here,we reported a simple strategy for the fabrication of graphene film with periodic and parallel wrinkles with a pre-stretched polydimethylsiloxane substrate.The width of the wrinkles in graphene can be controlled by changing the pre-stretched strain of the substrate.The average width of wrinkles in graphene film on the substrate with pre-stretched strain of 10%,20%,and 50%was about 3.68,2.99 and 2.01µm,respectively.The morphological evolution of wrinkled double-layered graphene under mechanical deformation was observed and studied.Furthermore,a strain sensor was constructed based on the wrinkled graphene,showing high sensitivity,large working range and excellent cyclic stability.These strain sensors show great potential in real-time motion detection,health surveillance and electronic skins.石墨烯薄膜中可控的微纳结构,有利于调控其物理性质并拓宽其在柔性电子器件中的应用.近年来,研究人员致力于控制石墨烯薄膜中褶皱、起伏波纹等微纳结构的形成.但是,在石墨烯薄膜中可控地形成有序的褶皱状结构仍然面临巨大挑战.本文报道了一种简单地制备具有周期性平行褶皱结构的石墨烯薄膜的方法,即通过将溶液表面自组装形成的石墨烯薄膜转移至预拉伸的聚二甲基硅氧烷(PDMS)基底上而得到.制备的石墨烯薄膜中,褶皱的宽度可以简单地通过改变基底的预拉伸形变来控制.当PDMS基底预拉伸应变分别为10%、20%和50%时,薄膜中褶皱的平均宽度分别为3.68、2.99和2.01µm.本文还进一步研究和分析了双层堆叠、褶皱状石墨烯薄膜,在拉伸形变时的形貌结构变化.此外,本文基于该褶皱状石墨烯薄膜,构建了应变传感器.该传感器展现出高灵敏度、宽探测范围和优良的循环稳定性,其在实时运动探测、健康监测和电子皮肤等领域有着广阔应用前景.

关 键 词：wrinkled double-layered structure solution-processed assembled graphene film Marangoni effect strain sensor 

分 类 号：TQ127.11[化学工程—无机化工] TB383.2[一般工业技术—材料科学与工程] TP212[自动化与计算机技术—检测技术与自动化装置]