Dynamic tuning of plasmon resonance in the visible using graphene
Date
2016
Authors
Balci, S.
Balci, O.
Kakenov, N.
Atar, F. B.
Kocabas, C.
Editor(s)
Advisor
Supervisor
Co-Advisor
Co-Supervisor
Instructor
Source Title
Optics Letters
Print ISSN
0146-9592
Electronic ISSN
1539-4794
Publisher
The Optical Society
Volume
41
Issue
6
Pages
1241 - 1244
Language
English
Type
Journal Title
Journal ISSN
Volume Title
Series
Abstract
We report active electrical tuning of plasmon resonance of silver nanoprisms (Ag NPs) in the visible spectrum. Ag NPs are placed in close proximity to graphene which leads to additional tunable loss for the plasmon resonance. The ionic gating of graphene modifies its Fermi level from 0.2 to 1 eV, which then affects the absorption of graphene due to Pauli blocking. Plasmon resonance frequency and linewidth of Ag NPs can be reversibly shifted by 20 and 35 meV, respectively. The coupled graphene-Ag NPs system can be classically described by a damped harmonic oscillator model. Atomic layer deposition allows for controlling the graphene-Ag NP separation with atomic-level precision to optimize coupling between them.
Course
Other identifiers
Book Title
Keywords
Atomic layer deposition , Oscillators (electronic) , Oscillators (mechanical) , Plasmons , Resonance , Silver , Surface plasmon resonance , Tuning , Close proximity , Damped harmonic-oscillator models , Dynamic tuning , Electrical tuning , Plasmon resonance frequencies , Plasmon resonances , Silver nanoprisms , Visible spectra , Graphene , Graphite , Metal nanoparticle , Silver , Chemistry , Energy transfer , Light related phenomena , Procedures , Surface plasmon resonance , Energy Transfer , Graphite , Metal Nanoparticles , Optical Phenomena , Silver , Surface Plasmon Resonance