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Tuning plasmon induced reflectance with hybrid metasurfaces

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Tuning plasmon induced reflectance with hybrid metasurfaces. / Habib, Mohsin; Ozbay, Ekmel; Caglayan, Humeyra.

In: Photonics, Vol. 6, No. 1, 29, 2019.

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@article{75f7320e845d4475a7e5a19ad3d2c58a,
title = "Tuning plasmon induced reflectance with hybrid metasurfaces",
abstract = "Electrically tunable metasurfaces with graphene offer design flexibility to efficiently manipulate and control light. These metasurfaces can be used to generate plasmon-induced reflectance (PIR), which can be tuned by electrostatic doping of the graphene layer. We numerically investigated two designs for tunable PIR devices using the finite difference time-domain (FDTD) method. The first design is based on two rectangular antennas of the same size and a disk; in the second design, two parallel rectangular antennas with different dimensions are used. The PIR-effect was achieved by weak hybridization of two bright modes in both devices and tuned by changing the Fermi level of graphene. A total shift of 362 nm was observed in the design with the modulation depth of 53{\%} and a spectral contrast ratio of 76{\%}. These tunable PIR devices can be used for tunable enhanced biosensing and switchable systems.",
keywords = "Plasmonics, Surface plasmon, Tunable metasurfaces",
author = "Mohsin Habib and Ekmel Ozbay and Humeyra Caglayan",
year = "2019",
doi = "10.3390/photonics6010029",
language = "English",
volume = "6",
journal = "Photonics",
issn = "2304-6732",
publisher = "MDPI",
number = "1",

}

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TY - JOUR

T1 - Tuning plasmon induced reflectance with hybrid metasurfaces

AU - Habib, Mohsin

AU - Ozbay, Ekmel

AU - Caglayan, Humeyra

PY - 2019

Y1 - 2019

N2 - Electrically tunable metasurfaces with graphene offer design flexibility to efficiently manipulate and control light. These metasurfaces can be used to generate plasmon-induced reflectance (PIR), which can be tuned by electrostatic doping of the graphene layer. We numerically investigated two designs for tunable PIR devices using the finite difference time-domain (FDTD) method. The first design is based on two rectangular antennas of the same size and a disk; in the second design, two parallel rectangular antennas with different dimensions are used. The PIR-effect was achieved by weak hybridization of two bright modes in both devices and tuned by changing the Fermi level of graphene. A total shift of 362 nm was observed in the design with the modulation depth of 53% and a spectral contrast ratio of 76%. These tunable PIR devices can be used for tunable enhanced biosensing and switchable systems.

AB - Electrically tunable metasurfaces with graphene offer design flexibility to efficiently manipulate and control light. These metasurfaces can be used to generate plasmon-induced reflectance (PIR), which can be tuned by electrostatic doping of the graphene layer. We numerically investigated two designs for tunable PIR devices using the finite difference time-domain (FDTD) method. The first design is based on two rectangular antennas of the same size and a disk; in the second design, two parallel rectangular antennas with different dimensions are used. The PIR-effect was achieved by weak hybridization of two bright modes in both devices and tuned by changing the Fermi level of graphene. A total shift of 362 nm was observed in the design with the modulation depth of 53% and a spectral contrast ratio of 76%. These tunable PIR devices can be used for tunable enhanced biosensing and switchable systems.

KW - Plasmonics

KW - Surface plasmon

KW - Tunable metasurfaces

U2 - 10.3390/photonics6010029

DO - 10.3390/photonics6010029

M3 - Article

VL - 6

JO - Photonics

JF - Photonics

SN - 2304-6732

IS - 1

M1 - 29

ER -