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Updated: Jun 2, 2026
10:28
Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
Published on: March 23, 2017
Asymmetric chiral metamaterial circular polarizer based on four U-shaped split ring resonators
Mehmet Mutlu1, Ahmet E Akosman, Andriy E Serebryannikov
1Department of Electrical and Electronics Engineering, Nanotechnology Research Center, Bilkent University, 06800 Ankara, Turkey. mutlu@ee.bilkent.edu.tr
Optics Letters
|May 5, 2011
Summary
Researchers developed an asymmetric chiral metamaterial for circular polarization. This novel structure generates both left-hand and right-hand circular polarization in transmission, confirmed by experiments and simulations.
Area of Science:
- Metamaterials
- Chiral photonics
- Electromagnetism
Background:
- Chiral metamaterials enable manipulation of light polarization.
- Asymmetric structures are key to achieving unique polarization conversion functionalities.
Purpose of the Study:
- To design and demonstrate an asymmetric chiral metamaterial structure.
- To achieve distinct left-hand and right-hand circular polarization in transmission.
Main Methods:
- Fabrication of a metamaterial using four double-layered U-shaped split ring resonators.
- Rotational arrangement of resonators by 90° relative to neighbors.
- Numerical simulations and experimental validation.
Main Results:
- The asymmetric design equalizes orthogonal electric field components with a 90° phase difference.
- Achieved left-hand circular polarization (LHCP) at 5.1 GHz.
- Achieved right-hand circular polarization (RHCP) at 6.4 GHz.
Conclusions:
- The proposed asymmetric chiral metamaterial effectively generates dual-band circular polarization.
- Experimental results align well with numerical predictions, validating the design.
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