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Updated: Aug 29, 2025
Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
Published on: March 23, 2017
Self-assembled pagoda-like nanostructure-induced vertically stacked split-ring resonators for polarization-sensitive
Sanghoon Kim1, Chunghwan Jung2, Jungho Mun3
1National Creative Research Initiative Center for Hybrid Nano Materials By High-Level Architectural Design of Block Copolymer, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
Large-area fabrication of stacked split-ring resonator (SSRR) arrays demonstrates polarization-sensitive optical responses. These nanostructured arrays, created using self-assembly and oblique deposition, are suitable for advanced optical applications.
Area of Science:
- Nanotechnology
- Plasmonics
- Materials Science
Background:
- Developing large-area nanostructures with tailored optical properties is crucial for advanced photonic devices.
- Polarization-sensitive metamaterials offer unique functionalities for optical manipulation.
Purpose of the Study:
- To realize centimeter-scale stacked split-ring resonator (SSRR) arrays with polarization-sensitive dichroic responses.
- To explore bottom-up fabrication methods for creating complex nanostructures for optical applications.
Main Methods:
- Self-assembly of lamellae-forming polystyrene-b-poly (methyl methacrylate) copolymer within anodized aluminum oxide templates.
- Oblique deposition of silver crescents and semi-hemispherical covers onto nanorods.
- Reactive-ion etching for precise nanostructure formation.
Main Results:
- Fabrication of SSRR arrays over a centimeter-scale area.
- Demonstration of polarization-sensitive dichroic responses in visible and near-infrared wavelengths.
- Successful creation of pagoda-like nanorods with stacked PS and PMMA nanodomains.
Conclusions:
- The developed bottom-up fabrication method enables large-area production of sophisticated nanostructures.
- These SSRR arrays show potential for applications in structural color, optical anti-counterfeiting, and commercial optical components.
