Plasmonic waveguiding properties of the gap plasmon mode with a dielectric substrate

W Wei, X Zhang, H Yu, Y Huang, X Ren - Photonics and Nanostructures …, 2013 - Elsevier
The plasmonic waveguiding properties of the gap plasmon mode between two adjacent
silver nanowires with a substrate are theoretically investigated using finite element method.
The results show that there is a critical gap distance between two silver nanowires which
approximately equals to the radius of the nanowires. When the gap distance is less than the
critical distance, the influence of the substrate on the gap plasmon mode can be neglected.
The gap plasmon mode has a combination of high confinement and long propagation …
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