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Published on: July 20, 2022
Tunable magnetic resonance in double layered metallic structures.
1National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, PR China.
Journal of Nanoscience and Nanotechnology
|March 14, 2012
Summary
Researchers achieved tunable magnetic resonance (MR) in double-layered metallic gratings by adjusting vertical chirped width. This method offers a new way to control MR wavelength for magnetic metamaterials.
Area of Science:
- Physics
- Materials Science
- Nanotechnology
Background:
- Double-layered metallic gratings are key components in metamaterial research.
- Controlling magnetic resonance (MR) properties is crucial for advanced optical and electromagnetic applications.
Purpose of the Study:
- To investigate tunable magnetic resonance in double-layered metallic gratings.
- To establish a method for controlling MR wavelength through microfabrication parameters.
Main Methods:
- Theoretical and experimental investigation of double-layered metallic gratings.
- Modulation of vertical chirped width (dh) using electron and/or ion beam microfabrication.
- Development of an analytic formula based on a modified LC model.
Main Results:
- Tunable magnetic resonance (MR) achieved by modulating vertical chirped width (dh).
- A linear relationship was observed between MR wavelength and dh.
- An analytic formula showed good agreement with simulation results.
- An effective width for trapezoidal sandwiched microstructures was presented.
Conclusions:
- The vertical chirped width is an effective parameter for tuning MR in metallic gratings.
- The modified LC model provides an accurate analytical approach.
- These findings offer a new method for developing tunable magnetic metamaterials with broad bandwidth.
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