Marangoni-flow-assisted assembly of single-walled carbon nanotube films for human motion sensing  

作　　者：Yuguang Chen Yitan Li Lu Han Hao Sun Min Lyu Zeyao Zhang Shigeo Maruyama Yan Li 

机构地区：[1]Key Laboratory for the Physics and Chemistry of Nanodevices,Beijing National Laboratory of Molecular Sciences,State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China [2]Academy for Advanced Interdisciplinary Studies,Peking University,Beijing 100871,China [3]Bruker(Beijing)Scientific Technology Co.Ltd.,Beijing 100192,China [4]Department of Mechanical Engineering,The University of Tokyo,Tokyo 113-8656,Japan [5]Peking University Shenzhen Institute,Shenzhen 518057,China [6]PKU-HKUST ShenZhen-HongKong Institution,Shenzhen 518057,China

出　　处：《Fundamental Research》2024年第3期570-574,共5页自然科学基础研究（英文版）

基　　金：supported by National Natural Science Foundation of China(22120102004,21631002);Ministry of Science and Technology of China(2016YFA0201904);Shenzhen KQTD Project(KQTD20180411143400981);Beijing National Laboratory for Molecular Sciences(BNLMS-CXTD-202001);JSPS KAKENHI(JP20H00220);and by JST,CREST(JPMJCR20B5),Japan,。

摘　　要：Single-walled carbon nanotubes(SWCNTs)present excellent electronic and mechanical properties desired in wearable and flexible devices.The preparation of SWCNT films is the first step for fabricating various devices.This work developed a scalable and feasible method to assemble SWCNT thin films on water surfaces based on Marangoni flow induced by surface tension gradient.The films possess a large area of 40 cm×30 cm(extensible),a tunable thickness of 15∼150 nm,a high transparency of up to 96%,and a decent conductivity.They are ready to be directly transferred to various substrates,including flexible ones.Flexible strain sensors were fabricated with the films on flexible substrates.These sensors worked with high sensitivity and repeatability.By realizing multi-functional human motion sensing,including responding to voices,monitoring artery pulses,and detecting knuckle and muscle actions,the assembled SWCNT films demonstrated the potential for application in smart devices.

关 键 词：Single-walled carbon nanotubes Marangoni flow ASSEMBLY INTERFACES Sensors 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TB383[自动化与计算机技术—控制科学与工程]