{"title":"Entire X broadband and high-performance electromagnetic wave absorbing nickel/liquid metal/graphene oxide/bacterial cellulose composite films","authors":"Mengxia Guo, Xiaoqin Guo, Huicong Niu, Zhongyi Bai, Shuaike Li, Yumei Ren, Hao Zhang, Jiushuai Deng","doi":"10.1007/s10854-024-14188-7","DOIUrl":null,"url":null,"abstract":"<div><p>The development of X band (8.2–12.4 GHz) electromagnetic wave (EMW) absorbing materials with small thickness and effective absorption bandwidth is crucial for the advancement of portable electronic devices and stealth materials. This study uses an ultrasonic approach and electrostatic self-assembly to create a three-dimensional network structured film, integrating points (liquid metal, LM; nickel particles, Ni), lines (bacterial cellulose, BC), and surfaces (graphene oxide, GO) through vacuum filtration and freeze-drying. In the Ni/LM/GO/BC composite films, BC and GO serve as “donors” for LM anchoring and packaging, while also providing the basic “skeleton” or “grid” for constructing the three-dimensional structures. This resulted in the formation of numerous heterogeneous interfaces and conductive networks among BC, GO, and the metal particles. The GO/BC (GB) film exhibits poor electromagnetic wave absorption performance and does not meet the required standards. However, when LM was added alone, the performance improved, and the EAB extended across the X band. The introduction of magnetic Ni nanoparticles further enhanced the EWA capacity, owing to the combined dielectric and magnetic loss mechanism. The composite film achieved a minimum reflection loss of − 43.56 dB at 2.8 mm and an EAB of 4.2 GHz, effectively covering the X band. The enhanced EWA performance can be attributed to the synergistic effects of dielectric loss, magnetic loss, interfacial polarization, and the multilayer structure. This study demonstrates that a promising wideband EMW absorbing film was developed by exploiting the synergistic electromagnetic effects.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 2","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science: Materials in Electronics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10854-024-14188-7","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
The development of X band (8.2–12.4 GHz) electromagnetic wave (EMW) absorbing materials with small thickness and effective absorption bandwidth is crucial for the advancement of portable electronic devices and stealth materials. This study uses an ultrasonic approach and electrostatic self-assembly to create a three-dimensional network structured film, integrating points (liquid metal, LM; nickel particles, Ni), lines (bacterial cellulose, BC), and surfaces (graphene oxide, GO) through vacuum filtration and freeze-drying. In the Ni/LM/GO/BC composite films, BC and GO serve as “donors” for LM anchoring and packaging, while also providing the basic “skeleton” or “grid” for constructing the three-dimensional structures. This resulted in the formation of numerous heterogeneous interfaces and conductive networks among BC, GO, and the metal particles. The GO/BC (GB) film exhibits poor electromagnetic wave absorption performance and does not meet the required standards. However, when LM was added alone, the performance improved, and the EAB extended across the X band. The introduction of magnetic Ni nanoparticles further enhanced the EWA capacity, owing to the combined dielectric and magnetic loss mechanism. The composite film achieved a minimum reflection loss of − 43.56 dB at 2.8 mm and an EAB of 4.2 GHz, effectively covering the X band. The enhanced EWA performance can be attributed to the synergistic effects of dielectric loss, magnetic loss, interfacial polarization, and the multilayer structure. This study demonstrates that a promising wideband EMW absorbing film was developed by exploiting the synergistic electromagnetic effects.
期刊介绍:
The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.