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Updated: Jun 23, 2026
06:27
Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques
Published on: July 2, 2018
Electromagnetic tunneling in a sandwich structure containing single negative media
Tuanhui Feng1, Yunhui Li, Haitao Jiang
1Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China. liyunhui@mail.tongji.edu.cn
Summary
Researchers explored electromagnetic tunneling in a novel sandwich structure. This structure enables efficient, long-distance wave transmission with separated electric and magnetic fields, paving the way for advanced wireless applications.
Area of Science:
- Electromagnetism
- Materials Science
- Wave Phenomena
Background:
- Electromagnetic (EM) tunneling is a quantum mechanical phenomenon.
- Metamaterials offer unique EM properties.
- Sandwich structures can exhibit novel wave propagation characteristics.
Purpose of the Study:
- Investigate EM tunneling in a specific metamaterial sandwich structure.
- Analyze the behavior of EM waves within this structure.
- Explore potential applications of the observed phenomenon.
Main Methods:
- Transfer-matrix method for theoretical analysis.
- Microwave experiments for empirical validation.
- Parameter selection for optimizing tunneling efficiency.
Main Results:
- Efficient EM wave tunneling demonstrated over long distances (hundreds of times device length).
- Separation and localization of electric and magnetic fields observed at MNG-air and ENG-air interfaces, respectively.
- Successful validation of theoretical predictions through experimental results.
Conclusions:
- The engineered metamaterial sandwich structure facilitates efficient EM tunneling.
- The unique field localization offers potential for novel device designs.
- The structure holds promise for high-efficiency, secure wireless information and energy transmission.
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