Large-Area Plasmon Mapping via an Optical Technique: Silver Nanohole Array and Nano-Sawtooth StructuresClick to copy article linkArticle link copied!
- Masanori Sakamoto*Masanori Sakamoto*Email: [email protected]Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, JapanMore by Masanori Sakamoto
- Ken-ichi Saitow*Ken-ichi Saitow*Email: [email protected]Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, JapanDepartment of Materials Science, Natural Science Center for Basic Research and Development (N-BARD), Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, JapanDepartment of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, JapanMore by Ken-ichi Saitow
Abstract
Silver nanostructures are among the most important platforms for developing efficient plasmonic materials, and edges and/or spikes in such structures can produce highly localized surface plasmons, resulting in dramatic electromagnetic field enhancement. In addition, if the enhanced field and/or localized surface plasmons were to be visualized in a periodic structure with long-range order, then this data would be invaluable for plasmonics researchers and engineers. Herein, we present an optical technique for plasmon mapping in the silver nanohole array and edge (nano-sawtooth) structures over large areas (∼10 μm). Plasmon mapping via two-dimensional fluorescence intensity enhancement quantification with submicrometer spatial resolution revealed high enhancement factors of up to 200 for the nano-sawtooth structure. These measurements were performed alongside atomic force microscopy, scanning electron microscopy, and finite-difference time-domain calculations, and the enhancement mechanism was investigated. Furthermore, the silver nanohole array and nano-sawtooth structures were fabricated using straightforward and cost-effective processes.
Cited By
This article is cited by 1 publications.
- Ken-ichi Saitow. 1D, 2D, and 3D Mapping of Plasmon and Mie Resonances: A Review of Field Enhancement Imaging Based on Electron or Photon Spectromicroscopy. The Journal of Physical Chemistry C 2024, 128
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, 5367-5393. https://doi.org/10.1021/acs.jpcc.3c07393
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