典型文献
Engineering polarization surface of hierarchical ZnO microspheres via spray-annealing strategy for wide-frequency electromagnetic wave absorption
文献摘要：
Regulating orientation growth plays a dominant role in enhancing dielectric properties for the electro-magnetic(EM)functional materials,which faces a huge challenge in the synthesis method.By spray-annealing strategy,hierarchical ZnO microspheres assembled by ZnO nanorods and nanoparticles were successfully fabricated.With confined microsphere space and controlling crystal growth,oriented ZnO nanorods possess rich defects,Zn-polar,O-polar faces,and high permittivity.Meanwhile,temperature-dependency of exposed polarization surfaces is discovered in the semiconductor ZnO nanoparticles with evolved aspect ratios.As pure dielectric EM wave absorption material,the hierarchical ZnO microsphere exhibits adjustable complex permittivity and polarization behaviors.When the thickness is 2.4 mm,the hierarchical ZnO-1 absorber shows the widest efficient absorption(RL≤-10 dB)region from 9.9 to 18.0 GHz(8.1 GHz,～50.6％testing frequency).The minimum reflection loss(RL)of ZnO-1 can reach-31.5 dB at only 2.0 mm.Because of the outstanding dielectric loss ability and wide absorption frequency,large-scale hierarchical ZnO microspheres can be a potential EM absorption candidate.
文献关键词：
中图分类号：
作者姓名：
Lei Wang;Mengqiu Huang;Xuefeng Yu;Wenbin You;Biao Zhao;Chongyun Liang;Xianhu Liu;Xuefeng Zhang;Renchao Che
作者机构：
Laboratory of Advanced Materials,Shanghai Key Lab of Molecular Catalysis and Innovative Materials,Department of Materials Science,Fudan University,Shanghai 200438,China;School of Materials Science and Engineering,Shanghai Institute of Technology,Shanghai 201418,China;Department of Chemistry,Fudan University,Shanghai 200433,China;Key Laboratory of Materials Processing and Mold,Zhengzhou University,Ministry of Education,Zhengzhou 450002,China;Institute of Advanced Magnetic Materials,College of Materials and Environmental,Engineering,Hangzhou Dianzi University,Hangzhou 310012,China;Joint-Research Center for Computational Materials,Zhejiang Laboratory,Hangzhou 311100,China
文献出处：
引用格式：
[1]Lei Wang;Mengqiu Huang;Xuefeng Yu;Wenbin You;Biao Zhao;Chongyun Liang;Xianhu Liu;Xuefeng Zhang;Renchao Che-.Engineering polarization surface of hierarchical ZnO microspheres via spray-annealing strategy for wide-frequency electromagnetic wave absorption)[J].材料科学技术（英文版）,2022(36):231-239
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B类：
Engineering,polarization,hierarchical,ZnO,microspheres,via,spray,annealing,strategy,frequency,electromagnetic,wave,absorption,Regulating,orientation,growth,plays,dominant,role,enhancing,dielectric,properties,EM,functional,materials,which,huge,challenge,synthesis,method,By,assembled,by,nanorods,nanoparticles,were,successfully,fabricated,With,confined,space,controlling,crystal,oriented,possess,rich,defects,high,permittivity,Meanwhile,temperature,dependency,exposed,surfaces,discovered,semiconductor,evolved,aspect,ratios,pure,exhibits,adjustable,complex,behaviors,When,thickness,absorber,shows,widest,efficient,RL,dB,region,from,GHz,testing,minimum,reflection,loss,reach,only,Because,outstanding,ability,large,scale,potential,candidate
AB值：
0.561641
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