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, Jingyee Chee 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 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, Jingyee Chee 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)
Future Work

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
Guixiong Zhong
Tim McClure
CIQM seminar
By kittyyeung