CUED Publications database

Dynamic tuning of plasmon resonance in the visible using graphene

Balci, S and Balci, O and Kakenov, N and Atar, FB and Kocabas, C (2016) Dynamic tuning of plasmon resonance in the visible using graphene. Optics Letters, 41. pp. 1241-1244. ISSN 0146-9592

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Abstract

© 2016 Optical Society of America. 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.

Item Type: Article
Uncontrolled Keywords: Energy Transfer Graphite Metal Nanoparticles Optical Phenomena Silver Surface Plasmon Resonance
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 22 Mar 2018 01:27
Last Modified: 24 Nov 2020 08:36
DOI: 10.1364/OL.41.001241