Electro-ionic control of surface plasmons in graphene-layered heterostructures
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 controll...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2021
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| Online Access: | https://hdl.handle.net/10356/148601 |
| _version_ | 1811683864213454848 |
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| author | Pae, Jian Yi Medwal, Rohit Nair, Radhika V. Chaurasiya, Avinash Battiato, Marco Rawat, Rajdeep Singh Murukeshan, Vadakke Matham |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Pae, Jian Yi Medwal, Rohit Nair, Radhika V. Chaurasiya, Avinash Battiato, Marco Rawat, Rajdeep Singh Murukeshan, Vadakke Matham |
| author_sort | Pae, Jian Yi |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T04:19:30Z |
| format | Journal Article |
| id | ntu-10356/148601 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:19:30Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1486012023-10-21T16:47:51Z Electro-ionic control of surface plasmons in graphene-layered heterostructures Pae, Jian Yi Medwal, Rohit Nair, Radhika V. Chaurasiya, Avinash Battiato, Marco Rawat, Rajdeep Singh Murukeshan, Vadakke Matham School of Mechanical and Aerospace Engineering School of Physical and Mathematical Sciences Center for Optical and Laser Engineering Singapore Centre for 3D Printing Science::Physics Surface Plasmons Electric Field-control 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. Ministry of Education (MOE) National Research Foundation (NRF) Submitted/Accepted version J.Y.P. acknowledges NTU for the Research Student Scholarship and SC3DP which is supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Medium-Sized Centre funding scheme. This work was supported in part by the Ministry of Education (MOE), Singapore - Academic Research Funding (AcRF) Tier 1 Grant RG192/17. R.M. and R.S.R. acknowledge Grants MOE2017- T2-2-129 and MOE2019-T2-1-058. M.B. acknowledges NTU for the NAP-SUG grant. 2021-05-25T06:12:26Z 2021-05-25T06:12:26Z 2020 Journal Article Pae, J. Y., Medwal, R., Nair, R. V., Chaurasiya, A., Battiato, M., Rawat, R. S. & Murukeshan, V. M. (2020). Electro-ionic control of surface plasmons in graphene-layered heterostructures. Nano Letters, 20(11), 8305-8311. https://dx.doi.org/10.1021/acs.nanolett.0c03471 1530-6992 0000-0001-8834-0648 0000-0003-0648-2592 0000-0002-3161-2486 https://hdl.handle.net/10356/148601 10.1021/acs.nanolett.0c03471 33079550 2-s2.0-85096063362 11 20 8305 8311 en RG192/17 Nano Letters © 2020 American Chemical Society. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1021/acs.nanolett.0c03471. application/pdf application/pdf |
| spellingShingle | Science::Physics Surface Plasmons Electric Field-control Pae, Jian Yi Medwal, Rohit Nair, Radhika V. Chaurasiya, Avinash Battiato, Marco Rawat, Rajdeep Singh Murukeshan, Vadakke Matham Electro-ionic control of surface plasmons in graphene-layered heterostructures |
| title | Electro-ionic control of surface plasmons in graphene-layered heterostructures |
| title_full | Electro-ionic control of surface plasmons in graphene-layered heterostructures |
| title_fullStr | Electro-ionic control of surface plasmons in graphene-layered heterostructures |
| title_full_unstemmed | Electro-ionic control of surface plasmons in graphene-layered heterostructures |
| title_short | Electro-ionic control of surface plasmons in graphene-layered heterostructures |
| title_sort | electro ionic control of surface plasmons in graphene layered heterostructures |
| topic | Science::Physics Surface Plasmons Electric Field-control |
| url | https://hdl.handle.net/10356/148601 |
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