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Annular Microfluidic Meta-Atom Fusion-Enabled Broadband Metamaterial Absorber
Jinpeng Peng1, Yi Zhang2,3, Zihao Chen4
1School of Integrated Circuit Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, People's Republic of China.
Nano-Micro Letters
|January 4, 2026
Summary
We developed a novel 3D-printed metamaterial absorber using a fused annular microfluidic meta-atom (FAMMA) architecture for W-band absorption. This design achieves significant broadband absorption, crucial for stealth applications.
Area of Science:
- Metamaterials
- Electromagnetic Absorption
- Nanotechnology
Background:
- Metamaterial absorbers (MMAs) are crucial for stealth and electromagnetic interference mitigation.
- Broadband absorption in MMAs is a key area of research.
Purpose of the Study:
- To present a novel 3D-printed MMA based on a fused annular microfluidic meta-atom (FAMMA) architecture.
- To design and characterize the FAMMA for W-band absorption applications.
Main Methods:
- Fabrication of the FAMMA-based MMA using high-precision micro 3D printing technology.
- Utilizing a synergistic solid-liquid coupling effect within the 3D orthogonal structure.
- Employing impedance matching theory and electromagnetic field distribution analyses to elucidate absorption mechanisms.
Main Results:
- Achieved ultra-low reflection loss (RL of -42.1 dB) and ultra-broadband effective absorption bandwidth (EAB of 31.3 GHz).
- Demonstrated dual-band absorption in specific frequency ranges (76.0-85.3 GHz and 99.1-105.6 GHz).
- Successfully suppressed radar echo power, rendering metallic targets undetectable.
Conclusions:
- The FAMMA-based MMA offers a new design concept for high-performance broadband millimeter-wave MMAs.
- Potential applications include stealth technology, high-speed communication, through-wall sensing, and drone detection.
