Spontaneous Orientation Polarization of Anisotropic Equivalent Dipoles Harnessed by Entropy Engineering for Ultra-Thin Electromagnetic Wave Absorber

IF 26.6 1区材料科学 Q1 Engineering Nano-Micro Letters Pub Date : 2024-09-26 DOI:10.1007/s40820-024-01507-0

Honghan Wang, Xinyu Xiao, Shangru Zhai, Chuang Xue, Guangping Zheng, Deqing Zhang, Renchao Che, Junye Cheng

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Abstract

Highlights

The strengthening mechanism of spontaneous orientation polarization of anisotropic equivalent dipoles within high-entropy alloys (HEAs) is proposed for enhancing dielectric attenuation of HEAs.
The source of carbon supporter is expanded to the biomass category, which can construct the shell-core heterointerfaces with HEAs by means of a reformative carbothermal shock method.
The sample carbonized cellulose paper/HEAs-Mn_2.15 achieves efficient electromagnetic wave absorption of -51.35 dB at an ultra-thin thickness of 1.03 mm.
This work combines theoretical calculations and electromagnetic simulations to propose feasible strategies for the design and application of electromagnetic functional devices such as ultra-wideband bandpass filter.

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熵工程利用各向异性等效偶极子的自发方向极化实现超薄电磁波吸收器

提出了高熵合金（HEAs）内部各向异性等效偶极子自发取向极化的强化机制，以增强HEAs的介电衰减。将碳支持物的来源扩展到生物质范畴，通过重整碳热冲击法，可与HEAs构建壳核异质界面。碳化纤维素纸/HEAs-Mn2.15样品在1.03毫米的超薄厚度下实现了-51.35分贝的高效电磁波吸收。这项工作结合理论计算和电磁模拟，为超宽带带通滤波器等电磁功能器件的设计和应用提出了可行的策略。

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.