Direct ink writing of multifunctional gratings with gel-like MXene/norepinephrine ink for dynamic electromagnetic interference shielding and patterned Joule heating  

作　　者：Pei-Zhu Jiang Zhiming Deng Peng Min Lvxuan Ye Cheng-Zhang Qi Hao-Yu Zhao Ji Liu Hao-Bin Zhang Zhong-Zhen Yu 

机构地区：[1]Beijing Key Laboratory of Advanced Functional Polymer Composites,Beijing University of Chemical Technology,Beijing 100029,China [2]State Key Laboratory of Organic-Inorganic Composites,College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China [3]School of Chemistry,CRANN and AMBER,Trinity College Dublin,Dublin D02PN40,Ireland

出　　处：《Nano Research》2024年第3期1585-1594,共10页纳米研究（英文版）

基　　金：support from the National Natural Science Foundation of China(Nos.51922020,52090034 and 52221006);the Open Fund of State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology(No.OIC-202201001)is gratefully acknowledged.

摘　　要：Intelligent electromagnetic interference(EMI)shielding modulators with a wide tuning range and cyclic stability are urgently needed but their fabrication remains challenging.A gel-like MXene/norepinephrine ink is developed and multifunctional MXene gratings with wide EMI shielding effectiveness(SE)tuning range,superior reversibility,and high mechanical flexibility are constructed by direct ink writing approach for dynamic EMI shielding and patterned Joule heating applications.The modulable MXene/norepinephrine grating with a high conductivity of 3510 S·cm-1 can conveniently realize the seamless modulation of the EMI SE by adjusting the angle between the MXene grating filaments and the electric field of the incident electromagnetic waves,offering highly reversible switching between shielding“On”(28.0 dB)and“Off”(0.5 dB)states.Notably,due to the optimized integration of the MXene ink and the rationally designed pattern,a superior specific EMI SE of 95,688.2 dB·cm^(2)·g^(-1) is achieved in the“On”state.Furthermore,the MXene/norepinephrine ink can be used to fabricate many complex patterned gratings with superior stability,instant responsibility,and superb mechanical flexibility,exhibiting a unique patterned Joule heating behavior.Direct writing of multifunctional gratings paves a means for developing intelligent EMI shielding materials,wearable electronic devices,and advanced thermal management materials.

关 键 词：MXene ink direct ink writing electromagnetic interference shielding multifunctional gratings Joule heating 

分 类 号：TN04[电子电信—物理电子学] TB34[一般工业技术—材料科学与工程]