Preprint Communication Version 1 Preserved in Portico This version is not peer-reviewed

Designing an Efficient Self-Assembled Plasmonic Nanostructures from Spherical Shaped Nanoparticles

Version 1 : Received: 13 September 2021 / Approved: 14 September 2021 / Online: 14 September 2021 (08:45:05 CEST)

A peer-reviewed article of this Preprint also exists.

Devaraj, V.; Lee, J.-M.; Kim, Y.-J.; Jeong, H.; Oh, J.-W. Engineering Efficient Self-Assembled Plasmonic Nanostructures by Configuring Metallic Nanoparticle’s Morphology. Int. J. Mol. Sci. 2021, 22, 10595. Devaraj, V.; Lee, J.-M.; Kim, Y.-J.; Jeong, H.; Oh, J.-W. Engineering Efficient Self-Assembled Plasmonic Nanostructures by Configuring Metallic Nanoparticle’s Morphology. Int. J. Mol. Sci. 2021, 22, 10595.

Abstract

We reveal the significance of plasmonic nanoparticle’s (NP) shape and its surface morphology en route to an efficient self-assembled plasmonic nanoparticle cluster. A simplified model is simulated in the form of free-space dimer and trimer nanostructures (NPs in shape of sphere, cube, and disk). A ~ 200 % to ~ 125% raise in near field strength (gap mode enhancement) is observed for spherical NPs in comparison with cubical NPs (from 2 nm to 8 nm gap sizes). Full-width three-quarter maximum reveals better broad-spectral optical performance in a range of ~ 100 nm (dimer) and ~ 170 nm (trimer) from spherical NPs as compared to a cube (~ 60 nm for dimer and trimer). These excellent properties for sphere-based nanostructures are merited from its dipole mode characteristics.

Keywords

Self-assembly; Metallic nanoparticles; Plasmonic modes; Simulations; Surface charge mappings; Full-width three-quarter maximum

Subject

Chemistry and Materials Science, Nanotechnology

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