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Updated: Oct 31, 2025
13:44
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
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C/MnO@void@C with Triple Balances for Superior Microwave Absorption Performance.
Pingdi Xu1, Ruixuan Zhang1, Xiang Qian1
1Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China.
ACS Applied Materials & Interfaces
|June 29, 2021
Summary
Researchers developed a novel C/MnO@void@C yolk-shell structure for efficient microwave absorption (MA). The material, synthesized via one-step calcination, demonstrates excellent performance due to balanced dielectric properties and structural design.
Area of Science:
- Materials Science
- Nanotechnology
- Electromagnetics
Background:
- Constructing yolk-shell structures for efficient microwave absorption (MA) presents challenges.
- Simple fabrication processes for advanced MA materials are highly sought after.
Purpose of the Study:
- To synthesize a novel C/MnO@void@C (MCC) yolk-shell structure with high MA performance.
- To investigate the relationship between material structure and MA properties.
Main Methods:
- One-step calcination synthesis of MCC yolk-shell composites.
- Tuning crystallinity and hollowness by varying calcination temperatures.
- Characterization of MA performance, including reflection loss and absorption bandwidth.
Main Results:
- MCC composites treated at 700 °C (MCC-700) exhibited optimal MA performance.
- Achieved a reflection loss of -53.2 dB and an effective absorption bandwidth of 5.4 GHz.
- Demonstrated balanced dielectric loss and impedance matching due to regulated permittivity.
Conclusions:
- The MCC yolk-shell structure offers a promising approach for high-performance microwave absorbers.
- Optimized crystallinity and hollowness are key to achieving excellent MA properties.
- The multicore yolk-shell design facilitates multiple scattering and energy dissipation for enhanced MA.
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