Near-field optical properties and surface plasmon effects generated by a dielectric hole in a silver-shell nanocylinder pair
- 13 October 2008
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 47 (30), 5557-5561
- https://doi.org/10.1364/ao.47.005557
Abstract
Near-field optical properties and surface plasmon effects in a silver-shell nanocylinder pair with five different dielectric holes (DHs) that interact with a transverse magnetic mode incident plane wave are simulated by use of the finite-element method, which includes the investigation of particle–particle interaction. The proposed structure exhibits a redshifted localized surface plasmon that can be tuned over an extended wavelength range by varying the dielectric constant in DHs and the thickness of the nanocylinder silver shell. The increase in the near-field intensity is attributed to a larger effective size of DH that is filled with a higher refractive medium.Keywords
This publication has 19 references indexed in Scilit:
- Dielectric-loaded plasmonic nanoantenna arrays: A metamaterial with tuneable optical propertiesPhysical Review B, 2007
- Anisotropic optical properties of arrays of gold nanorods embedded in aluminaPhysical Review B, 2006
- Cumulative plasmon field enhancement in finite metal particle chainsOptics Letters, 2005
- Highly confined electromagnetic fields in arrays of strongly coupled Ag nanoparticlesPhysical Review B, 2005
- Self-Similar Chain of Metal Nanospheres as an Efficient NanolensPhysical Review Letters, 2003
- Optical properties of two interacting gold nanoparticlesOptics Communications, 2003
- Optical Properties of Gold NanoringsPhysical Review Letters, 2003
- Nanoparticles with Raman Spectroscopic Fingerprints for DNA and RNA DetectionScience, 2002
- Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman ScatteringScience, 1997
- Surface-enhanced spectroscopyReviews of Modern Physics, 1985