Harmonizing material quantity and terahertz wave interference shielding efficiency with metallic borophene nanosheets

Haojian Lin, Ximiao Wang, Hongjia Zhu, Zhaolong Cao, Jiahao Wu, Runze Zhan, Ningsheng Xu, Shaozhi Deng (), Huanjun Chen () and Fei Liu ()
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Haojian Lin: Sun Yat-sen University
Ximiao Wang: Sun Yat-sen University
Hongjia Zhu: Sun Yat-sen University
Zhaolong Cao: Sun Yat-sen University
Jiahao Wu: Sun Yat-sen University
Runze Zhan: Sun Yat-sen University
Ningsheng Xu: Sun Yat-sen University
Shaozhi Deng: Sun Yat-sen University
Huanjun Chen: Sun Yat-sen University
Fei Liu: Sun Yat-sen University

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Materials with electromagnetic interference (EMI) shielding in the terahertz (THz) regime, while minimizing the quantity used, are highly demanded for future information communication, healthcare, and mineral resource exploration applications. Currently, there is often a trade-off between the amount of material used and the absolute EMI shielding effectiveness (EESt) for the EMI shielding materials. Here, we address this trade-off by harnessing the unique properties of two-dimensional (2D) β12-borophene (β12-Br) nanosheets. By leveraging the high electron mobility and low mass density of β12-Br, we simultaneously achieve a THz EMI shield effectiveness (SE) of 70 dB and an EESt of 4.8 × 105 dB·cm2/g (@0.87 THz) using a β12-Br polymer composite. This surpasses the values of previously reported THz shielding materials with an EESt less than 3 × 105 dB·cm2/g and a SE smaller than 60 dB, while only needs 0.1 wt.% of these materials to realize the same SE value. Furthermore, by capitalizing on the superior mechanical properties of the composite, with 158% tensile strain at a Young’s modulus of 21 MPa, we demonstrate the high-efficiency shielding performances of conformably coated surfaces based on β12-Br nanosheets, suggesting their great potential in EMI shielding area.

Date: 2025
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DOI: 10.1038/s41467-025-60892-1

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