Strong plasmon coupling between two gold nanospheres on a gold slab
H. Liu, J. Ng, S. B. Wang, Z. H. Hang, C. T. Chan, S. N. Zhu
TL;DR
This paper investigates the plasmon coupling between two gold nanospheres on a gold slab, revealing how resonance enhances local electric fields and optical forces, which could impact nanophotonics applications.
Contribution
It introduces a detailed analysis of plasmon interactions between nanospheres on a slab, highlighting the resonance effects on electric field enhancement and optical coupling.
Findings
Resonance frequencies lead to increased electron absorption on the slab surface.
Enhanced local electric fields between the nanospheres at resonance.
Strong optical coupling forces observed at plasmon resonance.
Abstract
In this work, the plasmon coupling effect between two gold nanospheres on a gold slab is investigated. At plasmon resonance frequencies, electrons on the surface of the slab are absorbed into spheres and contribute to plasmon oscillation. This effect can help enhance the local electric field and optical coupling force between the two spheres.
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