Engineering 2D Plasmonic Waves
Kitty Yeung
Harvard University
ymkyeung@fas.harvard.edu
Thesis advisor: Donhee Ham
Engineering 2D Plasmonic Waves
K. Yeung et al., App. Phy. Lett. 102, 021104 (2013)
Engineering 2D Plasmonic Waves
K. Yeung et al., Nano Letters, 14, 2479 (2014)
Plasmons in Different Dimensions
- Bulk
- Surface Plasmon Polariton
- 2D Plasmon
Plasmons in Different Dimensions
- Bulk
F. Stern, Phy. Lett. 18, 546 (1967); E. N. Economou, Phy. Rev. 182, 539 (1969); W. L. Barnes et al., Nature 424, 824 (2003)
E
Plasmons in Different Dimensions
- Surface Plasmon Polariton
F. Stern, Phy. Lett. 18, 546 (1967); E. N. Economou, Phy. Rev. 182, 539 (1969); W. L. Barnes et al., Nature 424, 824 (2003)
Penetration Depth
TM mode E
Plasmons in Different Dimensions
- 2D Plasmon
F. Stern, Phy. Lett. 18, 546 (1967); E. N. Economou, Phy. Rev. 182, 539 (1969); W. L. Barnes et al., Nature 424, 824 (2003)
Transmission Line Model
- Ungated
Staffaroni et al., ArXiv:1006.3126
Transmission Line Model
- Gated
Staffaroni et al., ArXiv:1006.3126; A. Eguiluz et at., Phys. Rev. B, 11, 4989 (1975); W. F. Andress et al., Nano Letters, 12, 2272 (2012)
2D Plasmonic Interferometer
K. Yeung et al., App. Phy. Lett. 102, 021104 (2013)
2D Plasmonic Interferometer
Sensitivity enhanced
2D Plasmonic Interferometer
2D Plasmonic Interferometer
2D Plasmonic Interferometer
2D Plasmonic Interferometer
Temperature dependence
2D Plasmonic Cavity
William Andress et al., Nano Lett. 12, 2272 (2012)
2D Plasmonic Band Filter
William Andress et al., Nano Lett. 12, 2272 (2012)
2D Plasmonic Crystals
~ x100000 smaller than EM counterpart
William Andress et al., Nano Lett. 12, 2272 (2012)
2D Plasmonic Negative Refractive Metamaterial
Hosang Yoon, Kitty Y. M. Yeung, V. Umansky and Donhee Ham, Nature, 488, 65 (2012)
Refractive index ~-700
2D Plasmonic Interferometer
Temperature dependence
2D Plasmonic Materials
2DEG
Graphene
Das Sarma et al., Rev. Mod. Phys. 83, 407 (2011)
Graphene Plasmonics
Ju et al. Nat. Nanotech. (2011) Yan el al. New J. Phys. & Nat. Nanotech. (2012)
Graphene Plasmonic Crystals
Microscope
SEM
K. Yeung et al., Nano Letters, 14, 2479 (2014)
Graphene Plasmonic Crystals
Raman spectrum
Raman 2D peak intensity map
Spatial variation in carrier concentration
Graphene Plasmonic Crystals
- Band Structure
Graphene Plasmonic Crystals
Graphene Plasmonic Crystals
C6v point group symmetry
Graphene Plasmonic Crystals
Graphene Plasmonic Crystals
Graphene Plasmonic Crystals
Graphene Plasmonic Crystals
Band Structure Engineering
- Carrier concentration
- Lattice dimensions
- Aperture shape
- Lattice symmetry
Graphene Plasmonic Crystals
Band Structure Engineering
- Carrier concentration
Graphene Plasmonic Crystals
Band Structure Engineering
- Lattice dimensions
Graphene Plasmonic Crystals
Band Structure Engineering
- Aperture shape
Graphene Plasmonic Crystals
Band Structure Engineering
- Lattice symmetry
Experiment
Simulation
Plasmonics in 2D
Research papers
Kitty Y. M. Yeung, Hosang Yoon, William Andress, Ken West, Loren Pfeiffer and Donhee Ham, Two-Path Solid-State Interferometry Using Ultra-Subwavelength 2D Plasmonic Waves,
App. Phys. Lett. 102, 021104 (2013)
William Andress, Hosang Yoon, Kitty Y. M. Yeung, Ling Qin, Ken West, Loren Pfeiffer and Donhee Ham, Ultra-Subwavelength Two-Dimensional Plasmonic Circuits,
Nano Lett. 12, 2272 (2012)
Hosang Yoon, Kitty Y. M. Yeung, V. Umansky and Donhee Ham, A Newtonian Approach to Negative Refraction, Nature, 488, 65 (2012)
Kitty Y. M. Yeung, Jingyee Chee, Hosang Yoon, Yi Song, Jing Kong and Donhee Ham, Far-Infrared Graphene Plasmonic Crystals for Plasmonis Band Engineering,
Nano Letters, 14, 2479 (2014)
Acknowledgement
Donhee Ham
Hosang Yoon
Jingyee Chee
William Andress
Ling Qin
Guangyu Xu
Jeffrey Abbott
Evelyn Hu
Marko Loncar
Amir Yacoby
David Clarke
Jing Kong (MIT)
Yi Song (MIT)
Loren Pfeiffer (Princeton)
Ken West (Princeton)
Nuno Peres (Minho)
Yuliy Bludov (Minho)
Ian Frank
Air Force Office of Scientific Research
National Science Foundation
Office of Naval Research
ymkyeung@fas.harvard.edu
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