Ultraconfined Interlaced Plasmons
Tiago A. Morgado, João S. Marcos, Mário G. Silveirinha, Stanislav I. Maslovski
Physical Review Letters
Volume: 107, Issue: 6, 5 August 2011
We describe a mesoscopic excitation in strongly coupled grids of metallic nanorods, resulting from the hybridization of weakly bounded plasmons. It is shown both theoretically and experimentally that the
characteristic spatial scale of the interlaced plasmons is determined by geometrical features, rather than from the electrical length of the nanorods, and that due to their wide band nature, weak sensitivity to
metallic absorption, and subwavelength mode sizes, such plasmons may have exciting applications in waveguiding in the nanoscale.
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