Enhanced Nanoplasmonic Optical Sensors with Reduced Substrate Effect
Citations Over TimeTop 10% of 2008 papers
Abstract
We present a straightforward method to double the refractive index sensitivity of surface-supported nanoplasmonic optical sensors by lifting the metal nanoparticles above the substrate by a dielectric nanopillar. The role of the pillar is to substantially decrease the spatial overlap between the substrate and the enhanced fields generated at plasmon resonance. Data presented for nanodisks and nanoellipsoids supported by pillars of varying heights are found to be in excellent agreement with electrodynamics simulations. The described concepts apply to multitude of plasmonic nanostructures, fabricated by top-down or bottom-up techniques, and are likely to further facilitate the development of novel nanooptical sensors for biomedicine and diagnostics.
Related Papers
- → Plasmonics: visit the past to know the future(2012)276 cited
- → Surface plasmon nanophotonics: A tutorial(2008)46 cited
- → Plasmonic Materials: A Plethora of Plasmonics from the Laboratory for Nanophotonics at Rice University (Adv. Mater. 36/2012)(2012)6 cited
- → Plasmonic Nanophotonics: Coupling Light to Nanoscale via Plasmons(2005)1 cited
- → Tunable Work Functions of Nanophotonic Components and Plasmonic Metals(2023)