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Exploration of lateral optical forces from a triangular periodic motif
Optics Express
|June 11, 2026
Summary
This study reveals how asymmetric nanostructures generate tunable optical forces through light-matter resonance. Geometric changes precisely control these forces, enabling design of advanced optically-driven systems.
Area of Science:
- Computational physics
- Nanophotonics
- Optical forces
Background:
- Lateral optical forces are crucial for manipulating nanoscale objects.
- Understanding resonant light-matter interactions is key to controlling these forces.
- Asymmetric nanostructures offer unique optical responses.
Purpose of the Study:
- To computationally investigate lateral optical forces in asymmetric dielectric nanostructures.
- To explore the relationship between structural geometry, resonant light-matter interactions, and optical force behavior.
- To identify design principles for systems requiring controlled optical forces.
Main Methods:
- Computational modeling of isosceles triangular nanostructures.
- Parameter-space analysis to map optical force responses.
- Eigenfrequency analysis to understand resonant phenomena.
Main Results:
- Identified stable zones and switching bands for optical forces based on structural parameters.
- Observed asymmetric force spectra indicative of Fano-resonance.
- Correlated eigenmode Q-factors with the sharpness of force transitions.
Conclusions:
- Structural geometry significantly influences optical forces via resonant effects.
- Fano-resonance and eigenmode interference are key mechanisms.
- Findings guide the design of nanophotonic devices with tailored optical force manipulation capabilities.
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