Probing the Plasmonic Near-Field of Gold Nanocrescent Antennas

Citations Over TimeTop 10% of 2010 papers

Abstract

We present an investigation of the plasmon-induced electromagnetic near-field around gold nanocrescent (NC) antennas which exhibit localized surface plasmon resonances (LSPRs) in the infrared. To probe the near-field behavior, we monitored the LSPR shift of NCs to adsorption of dielectric layers of varying thickness. The experimental results are analyzed using theoretical simulations, and the EM field decay lengths for the NCs are determined. We discuss how the structural properties of NC antennas influence the near-field properties and compare the results with the near-fields of other metal nanostructures. We show that the near-field distribution around NCs depends strongly on the structural parameters of the NC and that its spatial extent can be tuned to large distances (>700 nm) from the nanostructure surface. In addition, we discuss NC antenna structural changes associated with exposure to ethanol and buffer solutions and the impact on LSPR properties.

Related Papers

• → Characteristics of surface plasmon polaritons at a chiral–metal interface(2014)59 cited
• → Optical tunneling effect of surface plasmon polaritons and localized surface plasmon resonance(2002)79 cited
• → Controlling the Anti-Crossing between Localized Surface Plasmons and Surface Plasmon Polaritons(2010)2 cited
• → Investigation on the localized surface plasmon resonance (LSPR) of silver nanoparticles using electron energy loss spectroscopy (EELS) simulation(2018)1 cited
• → Optical Tunneling Effect and Surface Plasmon Resonance from Nanostructures in a Metallic Thin Film(2007)2 cited