Related Experiment Video
Updated: May 1, 2026
10:54
Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
Published on: July 8, 2013
14.4K
Far-infrared graphene plasmonic crystals for plasmonic band engineering
Kitty Y M Yeung1, Jingyee Chee, Hosang Yoon
1School of Engineering and Applied Sciences, Harvard University , Cambridge, Massachusetts 02138, United States.
Nano Letters
|April 1, 2014
Summary
Researchers created far-infrared graphene plasmonic crystals by patterning graphene. This engineering enables control over plasmon dynamics, opening doors for novel graphene plasmonic devices.
Area of Science:
- Condensed matter physics
- Materials science
- Nanophotonics
Background:
- Graphene exhibits unique electronic and optical properties due to its delocalized electrons.
- Plasmonics in continuous graphene supports delocalized plasmon dynamics.
- Controlling plasmonic behavior is crucial for developing advanced optical devices.
Purpose of the Study:
- To introduce and demonstrate the concept of far-infrared graphene plasmonic crystals.
- To investigate the effect of periodic structural perturbations on graphene plasmon dynamics.
- To explore the potential for band engineering in graphene for device applications.
Main Methods:
- Fabrication of graphene plasmonic crystals with a hexagonal lattice of apertures.
- Utilizing Fourier transform infrared spectroscopy (FTIR) to analyze plasmonic response.
- Investigating far-infrared irradiation effects on plasmonic band formation.
Main Results:
- Demonstration of plasmonic band formation in patterned graphene, analogous to photonic crystals.
- Observation of unique plasmonic bands excited by far-infrared light.
- Confirmation of band selection governed by phase matching and symmetry rules.
Conclusions:
- Periodic structuring of graphene creates far-infrared plasmonic crystals with engineered band structures.
- This approach offers a novel method for controlling light-matter interactions in graphene.
- The developed graphene plasmonic crystals hold promise for a new generation of optoelectronic devices.
