Enhanced optical forces between coupled resonant metal nanoparticles
Related Experiment Video
Updated: Jul 15, 2026

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
Published on: March 2, 2016
Anna S Zelenina1, Romain Quidant, Manuel Nieto-Vesperinas
1ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, Spain.
Abstract:
We investigate numerically the optical forces between noble metal nanoparticles sustaining localized surface plasmon resonances. Our results first point out enhanced binding optical forces compared with dielectric nanoparticles and nonresonant metallic nanoparticles. We also show that under suitable illumination conditions, short-range forces tend to make the nanoparticles cluster, leading to intense and localized hot spots in the interstices. This effect corroborates recent experimental observations of an enhanced Raman signal in trapped metal sphere ensembles.
Related Concept Videos
Sound Waves: Resonance
¹H NMR: Long-Range Coupling
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene π orbitals.
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...

