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Title: Electro-ionic control of surface plasmons in graphene-layered heterostructures
Authors: Pae, Jian Yi
Medwal, Rohit
Nair, Radhika V.
Chaurasiya, Avinash
Battiato, Marco
Rawat, Rajdeep Singh
Matham, Murukeshan Vadakke
Keywords: Science::Physics
Issue Date: 2020
Source: Pae, J. Y., Medwal, R., Nair, R. V., Chaurasiya, A., Battiato, M., Rawat, R. S. & Matham, M. V. (2020). Electro-ionic control of surface plasmons in graphene-layered heterostructures. Nano Letters, 20(11), 8305-8311.
Project: RG192/17
Journal: Nano Letters
Abstract: Precise control of light is indispensable to modern optical communication devices especially as the size of such devices approaches the subwavelength scale. Plasmonic devices are suitable for the development of these optical devices due to the extreme field confinement and its ability to be controlled by tuning the carrier density at the metal/dielectric interface. Here, an electro-ionic controlled plasmonic device consisting of Au/graphene/ion-gel is demonstrated as an optical switch, where an external electric field modulates the real part of the electrical conductivity. The graphene layer enhances charge penetration and charge separation at the Au/graphene interface resulting in an increased photoinduced voltage. The ion-gel immobilized on the Au/graphene further enables the electrical tunability of plasmons which modulates the intensity of the reflected laser light. This work paves the way for developing novel plasmonic electro-optic switches for potential applications such as integrated optical devices.
ISSN: 1530-6992
DOI: 10.1021/acs.nanolett.0c03471
Rights: © 2020 American Chemical Society (ACS). All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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