Abstract
We provide near-field spectroscopy of gold nanoaggregates with a substantial enhancement in surface-enhanced Raman scattering. Using an aperture near-field scanning optical microscope and a well-defined aggregate, a good correlation between topography and optical confinement was revealed. The genesis of the localized electromagnetic (EM) field at the "hotsite" and the EM enhancement factor in the SERS process require such a direct observation with high spatial resolution. The results were validated using a finite difference time domain analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 871-872 |
| Number of pages | 2 |
| Journal | International Conference on Metamaterials, Photonic Crystals and Plasmonics |
| State | Published - 2022 |
| Event | 12th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2022 - Torremolinos, Spain Duration: 19 Jul 2022 → 22 Jul 2022 |
Bibliographical note
Publisher Copyright:© 2023, META Conference. All rights reserved.
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Materials Science (miscellaneous)
- Electronic, Optical and Magnetic Materials
- Materials Chemistry