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Published on: August 26, 2015
Control of Far-Field Coupling in Bipartite Nanodisk Arrays
Juan J Alvarez-Serrano1, Vincenzo Aglieri2, Muhammad Sohaib2,3
1Instituto de Química Física Blas Cabrera (IQF), CSIC, 28006Madrid, Spain.
Nano Letters
|July 21, 2026
Summary
By adjusting the relative displacement of silver nanodisk arrays, researchers precisely engineered optical responses. This exploits far-field coupling of lattice resonances for tunable nanophotonic devices.
Area of Science:
- Nanophotonics
- Plasmonics
- Optical metamaterials
Background:
- Optical response of nanostructures is governed by electromagnetic mode interactions.
- Near-field coupling limits range and tunability for closely spaced nanostructures.
- Periodic arrays support extended lattice resonances via far-field coupling.
Purpose of the Study:
- To investigate the optical response of bipartite arrays of silver nanodisks.
- To demonstrate precise engineering of optical properties by controlling array positioning.
- To explore the physics of lattice resonance interactions in coupled periodic nanostructures.
Main Methods:
- Fabrication of bipartite arrays of silver nanodisks.
- Optical characterization of the arrays in different configurations.
- Theoretical analysis of far-field coupling between lattice resonances.
Main Results:
- Demonstrated nonmonotonic behavior in lattice resonance interactions based on relative positioning.
- Showcased precise control over optical response by adjusting array displacement.
- Analyzed configurations supporting superradiant, subradiant, and noninteracting modes.
Conclusions:
- Lattice resonance interactions offer a versatile platform for tunable nanophotonic devices.
- Relative positioning of arrays is a key parameter for engineering optical properties.
- Findings highlight the rich physics of coupled plasmonic systems.
