Tunable plasmonic lattices of silver nanocrystals
| Autor: | Prasert Sinsermsuksakul, Peidong Yang, Andrea R. Tao |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Optics and Photonics
Silver Materials science Light Biomedical Engineering Physics::Optics Bioengineering Nanotechnology Molecular nanotechnology Light scattering Condensed Matter::Materials Science Physics::Atomic and Molecular Clusters Scattering Radiation General Materials Science Electrical and Electronic Engineering Plasmon business.industry Surface plasmon Equipment Design Surface Plasmon Resonance Physicist Condensed Matter Physics Atomic and Molecular Physics and Optics Nanostructures Equipment Failure Analysis Optical phenomena Nanocrystal Photonics Crystallization business |
| Zdroj: | Nature Nanotechnology. 2:435-440 |
| ISSN: | 1748-3395 1748-3387 |
| DOI: | 10.1038/nnano.2007.189 |
| Popis: | Silver nanocrystals are ideal building blocks for plasmonic materials that exhibit a wide range of unique and potentially useful optical phenomena. Individual nanocrystals display distinct optical scattering spectra and can be assembled into hierarchical structures that couple strongly to external electromagnetic fields. This coupling, which is mediated by surface plasmons, depends on the shape and arrangement of the nanocrystals. Here we demonstrate the bottom-up assembly of polyhedral silver nanocrystals into macroscopic two-dimensional superlattices using the Langmuir-Blodgett technique. Our ability to control interparticle spacing, density and packing symmetry allows for tunability of the optical response over the entire visible range. This assembly strategy offers a new, practical approach to making novel plasmonic materials for application in spectroscopic sensors, subwavelength optics and integrated devices that utilize field-enhancement effects. |
| Databáze: | OpenAIRE |
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