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Graphene in a photonic metamaterial
Nikitas Papasimakis1, Zhiqiang Luo, Ze Xiang Shen
1Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, United Kingdom.
Optics Express
|July 1, 2010
Summary
A novel photonic metamaterial exhibits extreme sensitivity to single-layer graphene. Its optical transmission significantly amplifies when detecting graphene, showcasing potential for advanced sensor applications.
Area of Science:
- Photonics and Materials Science
- Nanotechnology and Plasmonics
Background:
- Photonic metamaterials offer unique light-interaction properties.
- Graphene's single atomic layer presents detection challenges.
- Fano-type plasmonic modes in nanostructures enable sensitive detection.
Purpose of the Study:
- To demonstrate a photonic metamaterial with ultra-high sensitivity to graphene.
- To investigate the Fano-type plasmonic resonance for graphene detection.
- To explore the frequency response of metamaterials with graphene.
Main Methods:
- Fabrication of size-scaled photonic metamaterial samples.
- Integration of single atomic layers of chemical vapor deposited (CVD) graphene.
- Optical transmission measurements at resonance frequencies (167-187 THz).
Main Results:
- Extraordinary sensitivity of the metamaterial to single-layer graphene observed.
- Multi-fold increase in optical transmission at resonance frequency.
- Correlation between graphene presence and Fano-type plasmonic mode enhancement.
Conclusions:
- The photonic metamaterial effectively detects single-layer graphene.
- Fano-type plasmonic modes are crucial for the observed high sensitivity.
- Potential applications in nanoscale sensing and optical devices.
