2D MoS_(2) Helical Liquid Crystalline Fibers for Multifunctional Wearable Sensors  

作　　者：Jun Hyun Park Jang Hwan Kim Su Eon Lee Hyokyeong Kim Heo Yeon Lim Ji Sung Park Taeyeong Yun Jinyong Lee Simon Kim Ho Jun Jin Kyeong Jun Park Heemin Kang Hoe Joon Kim Hyeong Min Jin Jiwoong Kim Sang Ouk Kim Bong Hoon Kim 

机构地区：[1]Department of Robotics and Mechatronics Engineering,DGIST,Daegu 42988,Republic of Korea [2]Present Address:Platform Technology R&D Center,LG Chemistry,Seoul 07795,Republic of Korea [3]Department of Materials Science and Engineering,Soongsil University,Seoul 06978,Republic of Korea [4]Department of Organic Materials and Fiber Engineering,Soongsil University,Seoul 06978,Republic of Korea [5]Nano Convergence Technology Research Center,Korea Electronics Technology Institute(KETI),Gyeonggi‑do 13509,Republic of Korea [6]Department of Green Chemistry and Materials Engineering,Soongsil University,Seoul 06978,Republic of Korea [7]Department of Materials Science and Engineering,Korea University,Seoul 02841,Republic of Korea [8]Department of Materials Science and Engineering,National Creative Research Initiative Center for Multi‑Dimensional Directed Nanoscale Assembly,KAIST Institute for Nanocentury,KAIST,Daejeon 34141,Republic of Korea [9]Department of Organic Materials Engineering,Chungnam National University,Daejeon 34134,Republic of Korea [10]Department of Materials Science and Engineering,Chungnam National University,99 Daehak‑ro,Yuseong‑gu,Daejeon 34134,Republic of Korea

出　　处：《Advanced Fiber Materials》2024年第6期1813-1824,共12页先进纤维材料（英文）

基　　金：supported by the National Creative Research Initiative(CRI)Center for Multi-Dimensional Directed Nanoscale Assembly(2015R1A3A2033061)through the National Research Foundation of Korea(NRF)funded by the Ministry of Education;supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.2022M3H4A1A02046445);This work was supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.RS-2024-00406240);This work was supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.RS-2024-00347619);This research was supported by the National Research Council of Science&Technology(NST)grant by the Korea government(MSIT)(No.CAP22071-000).

摘　　要：Fiber-based material systems are emerging as key elements for next-generation wearable devices due to their remarkable advantages,including large mechanical deformability,breathability,and high durability.Recently,greatly improved mechani-cal stability has been established in functional fiber systems by introducing atomic-thick two-dimensional(2D)materials.Further development of intelligent fibers that can respond to various external stimuli is strongly needed for versatile applica-tions.In this work,helical-shaped semiconductive fibers capable of multifunctional sensing are obtained by wet-spinning MoS_(2) liquid crystal(LC)dispersions.The mechanical properties of the MoS_(2) fibers were improved by exploiting high-purity LC dispersions consisting of uniformly-sized MoS_(2) nanoflakes.Notably,three-dimensional(3D)helical fibers with structural chirality were successfully constructed by controlling the wet-spinning process parameters.The helical fibers exhibited multifunctional sensing characteristics,including(1)photodetection,(2)pH monitoring,(3)gas detection,and(4)3D strain sensing.2D materials with semiconducting properties as well as abundant surface reactive sites enable smart multifunctionalities in one-dimensional(1D)and helical fiber geometry,which is potentially useful for diverse applications such as wearable internet of things(IoT)devices and soft robotics.

关 键 词：Molybdenum disulfide(MoS_(2)) Liquid crystal(LC) Two-dimensional(2D)material Sensor Fiber 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]