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Cited by 85Plasmonic and Surface Plasmon ResearchGold and Silver Nanoparticles Synthesis and ApplicationsMetamaterials and Metasurfaces Applications

Self-Similar Multiresonant Nanoantenna Arrays for Sensing from Near- to Mid-Infrared

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Rodrigo, Daniel, Tittl, Andreas, John-Herpin, Aurelian, Limaj, Odeta, Altug, Hatice·2018·ACS Photonics
DOI 10.1021/acsphotonics.8b01050
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Abstract

Tailoring nanoscale light concentration and electromagnetic near-field enhancement over a broad spectral range is crucial for many photonics applications such as infrared spectroscopy, photodetection, and light harvesting. So far, broadband light enhancement has faced significant challenges due to the difficulty of efficiently exciting resonances at spectrally separated wavelengths and the inability of current devices to individually tune each specific resonance. Here, we introduce a multiresonant structure based on the non-overlapping combination of plasmonic nanoantenna arrays with multiple periodicities. The self-similarity of the multiperiodic array, obtained by a fractal-like generation procedure, enables the excitation of a high number of resonances without compromising their excitation efficiency. We experimentally demonstrate devices with up to four independent resonances covering an unprecedentedly wide spectral range from 10 to 1.5 μm. Significantly, the reflectance signal is uniformly strong for all the resonances, reaching more than 70% amplitude and near-field intensity enhancements above 1000. We further show that each individual resonance wavelength can be independently controlled over a 50% spectral range by modifying a single geometrical antenna parameter, providing superior flexibility in tailoring the overall spectral response. Due to the self-similar layout and independent resonances, our design is well described by temporal coupled-mode theory, allowing for a straightforward extension for other nanophotonic applications. Finally, we demonstrate that the wide spectral coverage of our design enables a unique sensing method by simultaneously performing chemically specific mid-infrared detection and near-infrared refractometry.

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  • Individual resonances of plasmonic nanoantennas by different order resonance modes fail to cover the whole IR fingerprint wavelength region from 5.5 μm to 10 μm because of gaps between resonance peaks.

    “Nevertheless, the individual resonances of PNA by a different order of resonance modes also fail to cover the whole spectrum of IR fingerprint wavelength region from 5.5 μm to 10 μm because of the gaps between two resonance peaks40,41.”

    From Wavelength-multiplexed hook nanoantennas for machine learning enabled mid-infrared spectroscopy (2022) · cites this paper as [41]

  • In PNA-based SEIRAS, the great challenge is the limited bandwidth of nanoantenna resonances compared with the ultra-broadband vibrational absorption fingerprints.

    “In PNA-based surface-enhanced IR absorption spectroscopy (SEIRAS), the great challenge is the limited bandwidth of nanoantenna resonances compared with the ultra-broadband vibrational absorption fingerprints.”

    From Wavelength-multiplexed hook nanoantennas for machine learning enabled mid-infrared spectroscopy (2022) · cites this paper as [41]

  • Previous works show many solutions using multiple resonances of nanoantenna structures to capture plasmonic enhanced molecular fingerprints in separate wavelength ranges for sensing different molecule species.

    “Previous works show many solutions using multiple resonances of nanoantenna structures to capture the plasmonic enhanced molecular fingerprints in separate wavelength ranges for sensing different molecule species22,39,41,50,54–56.”

    From Wavelength-multiplexed hook nanoantennas for machine learning enabled mid-infrared spectroscopy (2022) · cites this paper as [41]

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Authors
Rodrigo, D., Tittl, A., John-Herpin, A., Limaj, O., & Altug, H.
Affiliations
  • Institute of Photonic Sciences (ES)
  • École Polytechnique Fédérale de Lausanne (CH)
  • Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
Corresponding author
Altug, Hatice
ORCID
Venue
ACS Photonics
Publisher
American Chemical Society (ACS)
Published
2018-10-03
Volume
5
Issue
12
Pages
4903-4911
ISSN
2330-4022 (ISSN-L)
DOI
10.1021/acsphotonics.8b01050
OpenAlex
W2895215132
Cited by
85
References
51
Citations by year
2026: 7 · 2025: 12 · 2024: 6 · 2023: 11 · 2022: 15 · 2021: 14 · 2020: 10 · 2019: 10
FWCI
3.40
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • ACS Photonics (publishedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
Funders
  • FP7 People: Marie-Curie Actions (609416, 625673)
  • Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung (133583)
  • H2020 Marie Sklodowska-Curie Actions (665667)
  • H2020 European Research Council (682167)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Plasmonic and Surface Plasmon Research
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Gold and Silver Nanoparticles Synthesis and Applications
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
Keywords
plasmonic nanoantenna arrays, self-similarity, near-field enhancement, mid-infrared detection, temporal coupled-mode theory, reflectance enhancement

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