Lightweight broadband electromagnetic wave absorption achieved by a like-clustered CNTs spheres modified SiC nanowires

气凝胶 材料科学 反射损耗 纳米线 光电子学 消散 介电损耗 吸收(声学) 散射 电介质 阻抗匹配 石墨烯 纳米技术 电阻抗 光学 复合材料 复合数 物理 电气工程 工程类 热力学
作者
Cunxian Wang,Haodong Wang,Bin Wang,Ye Tian,Jimei Xue,Hanjun Wei
出处
期刊:Colloids and Surfaces A: Physicochemical and Engineering Aspects [Elsevier BV]
卷期号:689: 133756-133756 被引量:3
标识
DOI:10.1016/j.colsurfa.2024.133756
摘要

Developing lightweight, broadband, and highly absorptive electromagnetic (EM) wave absorption materials by effectively utilizing the agglomeration effect of one-dimensional nanowires is challenging. In this work, a SiCnws/CNTs aerogel with a like-clustered CNTs sphere-modified SiCnws structure was prepared via simple freeze-drying and heat treatment techniques, where the CNTs content was controlled to adjust the quantity and volume of the CNTs spheres. This allows for effective regulation of the impedance matching characteristics and dielectric loss capability. Specifically, the SiCnws/CNTs aerogel exhibited remarkable dissipation of EM waves through the enhancement of the interface and dipole polarization, achieved by significantly increasing the presence of multiple interfaces and defects. Moreover, the aerogel structure induces conduction loss and amplifies multiple reflections and scattering, facilitating efficient dissipation of EM wave energy across multiple levels. The minimum reflection loss (RLmin) of the SiCnws/CNTs aerogel (SN-3 sample) achieves −43.4 dB at 11.2 GHz with a matching thickness of 2.6 mm. Its effective absorption bandwidth (EAB) spans from the C band to the Ku band (7.4–18 GHz) at thicknesses ranging from 2.1 to 4.4 mm. Additionally, when the matching thickness is 3.4 mm, the broadened EAB extends up to 9.8 GHz (covering the whole X and Ku bands). Furthermore, CST simulations clearly demonstrate a remarkable suppression of the incident EM wave by the samples under real-world conditions, with a substantial reduction of 42.5 dBm2 in the RCS. Considering this, SiCnws/CNTs aerogel materials pave the way for new opportunities in lightweight, broadband, and high-absorption materials.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
旦丁洋完成签到,获得积分10
刚刚
1秒前
科研通AI5应助砍柴少年采纳,获得10
1秒前
赘婿应助lydia采纳,获得10
2秒前
善学以致用应助活泼芷文采纳,获得10
2秒前
1243437374完成签到,获得积分10
2秒前
小刘医生完成签到,获得积分10
2秒前
2秒前
yoyo发布了新的文献求助10
2秒前
zhui发布了新的文献求助10
3秒前
旦丁洋发布了新的文献求助10
4秒前
上官若男应助科研通管家采纳,获得10
4秒前
MchemG应助科研通管家采纳,获得10
5秒前
5秒前
5秒前
搜集达人应助科研通管家采纳,获得30
5秒前
5秒前
5秒前
5秒前
5秒前
huzhu123发布了新的文献求助30
6秒前
6秒前
6秒前
7秒前
星辰大海应助TT采纳,获得10
7秒前
7秒前
Tingshan发布了新的文献求助10
7秒前
甜美剑愁发布了新的文献求助10
7秒前
小妍完成签到,获得积分10
8秒前
钟小凯完成签到 ,获得积分10
8秒前
8秒前
筋筋子完成签到,获得积分10
9秒前
Hello应助kidult采纳,获得10
9秒前
9秒前
9秒前
Lone完成签到,获得积分10
10秒前
dd完成签到,获得积分10
10秒前
Zora完成签到,获得积分10
10秒前
GUESSSS发布了新的文献求助10
10秒前
大力的天奇完成签到,获得积分10
10秒前
高分求助中
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Effective Learning and Mental Wellbeing 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3974426
求助须知:如何正确求助?哪些是违规求助? 3518788
关于积分的说明 11195842
捐赠科研通 3254946
什么是DOI,文献DOI怎么找? 1797649
邀请新用户注册赠送积分活动 877037
科研通“疑难数据库(出版商)”最低求助积分说明 806130