Plasmonic Resonances and Electromagnetic Forces Between Coupled Silver Nanowires

Details Plasmonic Resonances and Electromagnetic Forces Between Coupled Silver Nanowires Plasmonic Resonances and Electromagnetic Forces Between Coupled Silver Nanowires

2005-01-27

arxiv.org/abs/cond-mat/0501688v2

Phys. Rev. B 72, 075429 (2005)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevB.72.075429

We compute the electromagnetic response and corresponding forces between two silver nanowires. The wires are illuminated by a plane wave which has the electric field vector perpendicular to the axis of the wires, insuring that plasmonic resonances can be excited. We consider a nontrivial square cross section geometry that has dimensions on the order of $0.1 \lambda$, where $\lambda$ is the wavelength of the incident electromagnetic field. We find that due to the plasmonic resonance, there occurs great enhancement of the direct and mutual electromagnetic forces that are exerted on the nanowires. The Lippman-Schwinger volume integral equation is implemented to obtain solutions to Maxwell's equations for various $\lambda$ and separation distances between wires. The forces are computed using Maxwell's stress tensor and numerical results are shown for both on and off resonant conditions.

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