Biomimetic leaf structures for ultra-thin electromagnetic wave absorption  

作　　者：Shikun Hou Ying Wang Feng Gao Fei Jin Benfeng Zhu Qiong Wu Hongliang Ge Zhihai Cao Hua Yang 

机构地区：[1]Magnetism Key Laboratory of Zhejiang Province&College of Optical and Electronic Technology,China Jiliang University,Hangzhou 310018,China [2]Department of Materials Science and Engineering,Guangdong Technion-Israel Institute of Technology,Shantou 515063,China [3]Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing&Finishing of Textiles,Ministry of Education,Zhejiang Sci-Tech University,Hangzhou 310018,China

出　　处：《Nano Research》2024年第5期4507-4516,共10页纳米研究（英文版）

基　　金：supported by Zhejiang Provincial Natural Science Foundation of China(Nos.LQ23F050006,LQ21E020005);the National Natural Science Foundation of China(No.52002365).

摘　　要：Ultra-thin electromagnetic wave(EMW)absorbers present challenging demands on EMW absorption performance.Drawing inspiration from heather leaf structures,this study introduces an innovative design strategy for EMW absorbing material,proposing biomimetic leaf SnO_(2) structures(bio-SnO_(2))on carbon fabric(CF).By employing leaf-shaped SnS2 as precursors,biomimetic leaf SnO_(2) nanostructures are constructed on CF surface after a simple thermal treatment,resulting in bio-SnO_(2)@CF composite.Experimental results indicate that bio-SnO_(2)@CF exhibits an exceptional minimum reflection loss of-54.8 dB at an incredibly thin thickness of 1.2 mm.Radar cross section(RCS)simulations further validate the outstanding EMW attenuation ability of bio-SnO_(2)@CF,attaining a maximum RCS reduction value of 16.9 dBm^(2) at an incident wave angle ofθ=0°.This novel research showcases the biomimetic structural design strategy and its remarkable function in enhancing the EMW absorbing performance at ultra-thin absorber thickness.

关 键 词：biomimetic leaf structures electromagnetic wave absorption ultra-thin thickness 

分 类 号：TB30[一般工业技术—材料科学与工程]