Monolithic superaligned carbon nanotube composite with integrated rewriting, actuating and sensing multifunctions  

作　　者：Peidi Zhou Wei Zhang Luzhuo Chen Jian Lin Zhiling Luo Changhong Liu Kaili Jiang 

机构地区：[1]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials,College of Physics and Energy,Fujian Normal University,Fuzhou 350117,China [2]Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering,Fuzhou 350117,China [3]Tsinghua-Foxconn Nanotechnology Research Center,Department of Physics,Tsinghua University,Beijing 100084,China [4]State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China

出　　处：《Nano Research》2021年第7期2456-2462,共7页纳米研究（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.51773039 and 11974076);Natural Science Foundation of Fujian Province(Nos.2020J02036 and 2018J06001);Program for New Century Excellent Talents in University of Fujian Province(No.J1-1318);Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics(No.KF201810).

摘　　要：Multifunctionality has become a mainstream trend in the development of smart clothing and flexible wearable devices.Nevertheless,it remains a grand challenge to realize multiple functions,such as sensing,actuating and information displaying,in one single multifunctional material.Here,we present one multifunctional integration strategy by employing monolithic superaligned carbon nanotube(SACNT)composite,which can leverage three different functions through fascinating features of SACNT.Firstly,by using thermochromic dye as a color-memorizing component and SACNT as a photothermal converter,the composite film can be utilized as a flexible rewritable medium.It demonstrates excellent rewriting performances(reversibility>500 times).Secondly,the composite can be tailored to fabricate an actuator,when its length direction is along the SACNT alignment.The actuator shows a bending-morphing when illuminated by near-infrared light.The morphing is attributed to a large difference in volume change between the SACNT and polymer when the SACNT absorbs the optical energy and heats the composite.Thirdly,owing to the unique anisotropy of SACNT,the composite is easily to be stretched in the direction perpendicular to the SACNT alignment,accompanied by a change in electrical resistance.Therefore,the composite is able to be used as a strain sensor.Finally,we fabricate two smart wearable devices to demonstrate the applications,which realize the functions of human-motion detection(sensing)and rewritable information display(rewriting)simultaneously.This multifunctional SACNT composite is expected to have potential applications in the next-generation wearable devices,smart clothing and so on.

关 键 词：carbon nanotube ACTUATOR sensor rewritable media MULTIFUNCTIONAL 

分 类 号：TB383[一般工业技术—材料科学与工程]