Highly-sensitive refractive index sensing by near-infrared metatronic nanocircuits

Alirez R. Rashed; B. Gudulluoglu; H.W. Yun; Mohsin Habib; I.H. Boyaci; S.H. Hong; Ekmel Ozbay; Humeyra Caglayan

doi:10.1038/s41598-018-29623-z

Highly-sensitive refractive index sensing by near-infrared metatronic nanocircuits

Alirez R. Rashed^*
, B. Gudulluoglu
, H.W. Yun
, Mohsin Habib
, I.H. Boyaci
, S.H. Hong
, Ekmel Ozbay
, Humeyra Caglayan^*

^*Corresponding author for this work

Not published at VTT

Tampere University of Technology (TUT)
Bilkent University
Hacettepe University
Electronics and Telecommunications Research Institute (ETRI)

Research output: Contribution to journal › Article › Scientific › peer-review

23 Citations (Scopus)

Abstract

In this work, we present a highly-sensitive refractive index sensor based on metatronic nanocircuits operating at near-infrared spectral range. The structure is designed based on simple nanorod geometry and fabricated by nanopatterning of transparent conducting oxides. The functionality of these polarization dependent metatronic nanocircuits is enhanced by applying tunable response. This feature is investigated by depositing NH₂ (Amine) groups via plasma polymerization technique on top of indium-tin-oxide nanorods. The dielectric constant of Amine groups is a function of their thickness, which can be controlled by the RF power and the time duration of the applied plasma polymerization process. The resonance wavelengths of nanocircuits shift to higher wavelength, as the dielectric constant of the deposited material increases. An excellent agreement between the design and experimental results are obtained. Our metatronic based nanosensor offers a high-sensitive performance of 1587 nm/RIU with a satisfactory figure of merit for this class of sensors.

Original language	English
Article number	11457
Journal	Scientific Reports
Volume	8
Issue number	1
DOIs	https://doi.org/10.1038/s41598-018-29623-z
Publication status	Published - 2018
MoE publication type	A1 Journal article-refereed

Funding

This work is supported by Project No TUBITAK-115F560, “COMPETITIVE FUNDING TO STRENGTHEN UNIVERSITY RESEARCH PROFILES funded by Academy of Finland, decision number 301820”, and ETRI grant funded by the Korean government (18ZB1100, Development of Basic Technologies for 3D Photo-Electronics) and grant of (NRF-2015K2A9A1A06048855). One of the authors (E.O.) acknowledges the partial support from the Turkish Academy of Sciences. H. W. Yun acknowledges the partial suppport from Ministry of Science, ICT and Future Planning as Global Frontier Project (CAMM-2014M3A6B3063702).

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Cite this

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abstract = "In this work, we present a highly-sensitive refractive index sensor based on metatronic nanocircuits operating at near-infrared spectral range. The structure is designed based on simple nanorod geometry and fabricated by nanopatterning of transparent conducting oxides. The functionality of these polarization dependent metatronic nanocircuits is enhanced by applying tunable response. This feature is investigated by depositing NH2 (Amine) groups via plasma polymerization technique on top of indium-tin-oxide nanorods. The dielectric constant of Amine groups is a function of their thickness, which can be controlled by the RF power and the time duration of the applied plasma polymerization process. The resonance wavelengths of nanocircuits shift to higher wavelength, as the dielectric constant of the deposited material increases. An excellent agreement between the design and experimental results are obtained. Our metatronic based nanosensor offers a high-sensitive performance of 1587 nm/RIU with a satisfactory figure of merit for this class of sensors.",

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AU - Rashed, Alirez R.

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AU - Yun, H.W.

AU - Habib, Mohsin

AU - Boyaci, I.H.

AU - Hong, S.H.

AU - Ozbay, Ekmel

AU - Caglayan, Humeyra

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AB - In this work, we present a highly-sensitive refractive index sensor based on metatronic nanocircuits operating at near-infrared spectral range. The structure is designed based on simple nanorod geometry and fabricated by nanopatterning of transparent conducting oxides. The functionality of these polarization dependent metatronic nanocircuits is enhanced by applying tunable response. This feature is investigated by depositing NH2 (Amine) groups via plasma polymerization technique on top of indium-tin-oxide nanorods. The dielectric constant of Amine groups is a function of their thickness, which can be controlled by the RF power and the time duration of the applied plasma polymerization process. The resonance wavelengths of nanocircuits shift to higher wavelength, as the dielectric constant of the deposited material increases. An excellent agreement between the design and experimental results are obtained. Our metatronic based nanosensor offers a high-sensitive performance of 1587 nm/RIU with a satisfactory figure of merit for this class of sensors.

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Highly-sensitive refractive index sensing by near-infrared metatronic nanocircuits

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