Electromagnetic and acoustic double-shielding graphene-based metastructures

Ying Li; Liang Sun; Fan Xu; Shasha Wang; Qingyu Peng; Zhiyu Yang; Xiaodong He; Yibin Li

doi:10.1039/C8NR06143B

Electromagnetic and acoustic double-shielding graphene-based metastructures†

Ying Li,

^a Liang Sun,^b Fan Xu,^a Shasha Wang,^a Qingyu Peng,

^a Zhiyu Yang,^cb Xiaodong He*^ac and Yibin Li*^abc

Author affiliations

* Corresponding authors

^a Center for Composite Materials and Structures, School of Astronautics, Harbin Institute of Technology, Harbin 150080, People's Republic of China
E-mail: liyibin@hit.edu.cn, hexd@hit.edu.cn

^b Department of Physics, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, People's Republic of China

^c Shenzhen STRONG Advanced Materials Institute Ltd. Corp, Shenzhen 518000, People's Republic of China

Abstract

Nowadays, acoustic and electromagnetic pollution problems are becoming increasingly serious. Thus, electromagnetic interference (EMI) shielding materials and high acoustic insulation materials are urgently needed. EMI shielding materials and high acoustic insulation materials or structures have been rapidly developed. However, electromagnetic yet acoustic shielding (double-shielding) structures have not been reported so far. Herein, we propose a novel metastructure based on a graphene paper and artificial honeycomb, which exhibits not only excellent electromagnetic interference shielding property but also robust acoustic shielding efficiency. The EMI shielding effectiveness of the metastructure is up to 74 dB in a broad range from 2.6 to 26.5 GHz. The acoustic shielding effectiveness reaches 25 dB from 200 to 1500 Hz. It is worth noting that the effectiveness of acoustic shielding reaches up to 40 dB at very low frequency of 200 Hz. A typical double-shielding application demo was assembled to prove the attenuation performance against electromagnetic waves and sound. Our unique metastructure is very promising for protecting from electromagnetic and acoustic pollution.

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DOI: https://doi.org/10.1039/C8NR06143B
Article type: Paper
Submitted: 31 Jul 2018
Accepted: 18 Dec 2018
First published: 08 Jan 2019

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Nanoscale, 2019,11, 1692-1699

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Electromagnetic and acoustic double-shielding graphene-based metastructures

Y. Li, L. Sun, F. Xu, S. Wang, Q. Peng, Z. Yang, X. He and Y. Li, Nanoscale, 2019, 11, 1692 DOI: 10.1039/C8NR06143B

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Electromagnetic and acoustic double-shielding graphene-based metastructures†

Abstract

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Electromagnetic and acoustic double-shielding graphene-based metastructures

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