DataVXACS Applied Materials & InterfacesPaper
journal article·2022-04-13

Bionic Scarfskin-Inspired Hierarchy Configuration toward Tunable Microwave-Absorbing Performance

Haitang Yang, Yun Tan, Yanwei Zhang, Yihang Xiong, Gaosheng Nie, Heng Luo, Pei He, Junliang Yang, Xiangguo Zhao, Jinchao Tong, Yi Zhang

ACS Applied Materials & Interfaces· Volume 14· Issue 14
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Source abstract

Abstract

Maintaining the dynamical microwave synchronization between a target and its background is the key to electromagnetical invisibility in real environment. Herein, we introduce an archetypical paradigm for ultraelastic films of graphene-functionalized ionic gel with tunable microwave-absorbing behaviors. Inspired by the local structural changes during the wing-spreading process of vespertilionids, the experimental and finite element simulations have revealed that proper shape changing of 3D wrinkled structure containing ridge walls with moderate impedance is the effective way to minimize reflected wave and promote energy attenuation. An optimal RL value of -43.6 dB and valid regulatory amplitude of 41.5 dB, covering a microwave-absorbing to shielding state, could be reached with only 0.2% weight fraction of the active ingredient RGO filler. The significant regulatory performance is attributed to the competitive effect between intrinsic dielectric attenuation of silicon nitride modified reduced graphene oxide (RGO-SiN), multiscattering of a 3D wrinkled structure, and evolution of the oriented RGO-SiN.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Powder Metallurgy, Powder Metallurgy Research Institute, Central South University, Changsha 410083, China

Hunan Provincial Key Laboratory of Micro and Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China

Urumqi Comprehensive Survey Centre of Natural Resources, China Geological Survey, Urumqi 830092, China

School of Physics and Electronics, Central South University, Changsha 410083, China

Changsha Advanced Materials Industrial Institute Co., Ltd., Changsha 410000, China

School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore

Funding

Central South University · Natural Science Foundation of?Hunan Province · Science and Technology Program of Hunan Province · National Natural Science Foundation of China · State Key Laboratory of High Performance Complex Manufacturing, Central South University

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