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Related Experiment Video

Updated: Sep 17, 2025

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

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

Haojian Lin¹, Ximiao Wang¹, Hongjia Zhu¹

¹State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, and School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, 510275, China.

Nature Communications

|July 2, 2025

Summary

New two-dimensional β12-borophene (β12-Br) nanosheets offer superior terahertz electromagnetic interference (EMI) shielding. This breakthrough material achieves high shielding effectiveness with minimal quantity, overcoming previous trade-offs in material usage and performance.

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Area of Science:

Materials Science
Condensed Matter Physics
Nanotechnology

Background:

High demand for terahertz (THz) electromagnetic interference (EMI) shielding materials in advanced communication, healthcare, and exploration.
Existing THz EMI shielding materials face a trade-off between quantity used and shielding effectiveness (EES_t).
Need for lightweight, highly effective EMI shielding solutions for versatile applications.

Purpose of the Study:

To address the trade-off between material quantity and EMI shielding effectiveness in the THz regime.
To explore the potential of two-dimensional (2D) β12-borophene (β12-Br) nanosheets for high-performance THz EMI shielding.
To develop a novel composite material for superior THz EMI shielding applications.

Main Methods:

Utilized the unique properties of 2D β12-borophene (β12-Br) nanosheets, focusing on high electron mobility and low mass density.
Fabricated a β12-Br polymer composite for THz EMI shielding evaluation.
Characterized the shielding effectiveness (SE) and EES_t of the composite material at 0.87 THz.

Main Results:

Achieved a THz EMI shield effectiveness (SE) of 70 dB and an EES_t of 4.8 × 10⁵ dB·cm²/g (@0.87 THz) using the β12-Br polymer composite.
Demonstrated superior performance compared to existing THz shielding materials (EES_t < 3 × 10⁵ dB·cm²/g, SE < 60 dB).
Required only 0.1 wt.% of β12-Br material to achieve significant SE, highlighting material efficiency.
The composite exhibited excellent mechanical properties (158% tensile strain, 21 MPa Young's modulus), enabling conformable coatings.

Conclusions:

2D β12-borophene (β12-Br) nanosheets offer a promising solution for high-efficiency THz EMI shielding with minimal material usage.
The developed β12-Br polymer composite surpasses current standards in both shielding effectiveness and material efficiency.
The material's mechanical flexibility opens avenues for conformable shielding applications, indicating significant potential in the EMI shielding field.