Plasmon-Induced Transparency in the Visible Region via Self-Assembled Gold Nanorod Heterodimers

The phenomenon of plasmon-induced transparency holds immense potential for high sensitivity sensors and optical information processing due to the extreme dispersion and slowing of light within a narrow spectral window. Unfortunately plasmonic metamaterials demonstrating this effect has been restrict...

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Bibliographic Details
Published in:Nano letters 2013-12, Vol.13 (12), p.6287-6291
Main Authors: Biswas, Sushmita, Duan, Jinsong, Nepal, Dhriti, Park, Kyoungweon, Pachter, Ruth, Vaia, Richard A
Format: Article
Language:English
Subjects:
Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Devices
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Exact sciences and technology
Gold
Gold - chemistry
Materials science
Metal Nanoparticles - chemistry
Metamaterials
Methods of nanofabrication
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Nanostructure
Nanotubes
Nanotubes - chemistry
Optical data processing
Photons
Physics
Self assembly
Spectra
Surface and interface electron states
Surface Plasmon Resonance
Surface Properties
Wavelengths
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Summary:The phenomenon of plasmon-induced transparency holds immense potential for high sensitivity sensors and optical information processing due to the extreme dispersion and slowing of light within a narrow spectral window. Unfortunately plasmonic metamaterials demonstrating this effect has been restricted to infrared and greater wavelengths due to requisite precision in structure fabrication. Here we report a novel metamaterial synthesized by bottom-up self-assembly of gold nanorods. The small dimensions (≤50/20 nm, length/diameter), atomically smooth surfaces, and nanometer resolution enable the first demonstration of plasmon-induced transparency at visible wavelengths. The slow-down factors within the reduced symmetry heterodimer cluster are comparable to longer wavelength counterparts. The inherent spectral tunability and facile large-scale integration afforded by self-assembled metamaterials will open a new paradigm for physically realizable on-chip photonic device designs.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl403911z