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Non-plasmonic nanoantennas for surface enhanced spectroscopies with ultra-low heat conversion

Author

Listed:
  • Martín Caldarola

    (Laboratorio de Electrónica Cuántica, FCEN, Universidad de Buenos Aires)

  • Pablo Albella

    (The Blackett Laboratory, Imperial College London)

  • Emiliano Cortés

    (The Blackett Laboratory, Imperial College London)

  • Mohsen Rahmani

    (The Blackett Laboratory, Imperial College London)

  • Tyler Roschuk

    (The Blackett Laboratory, Imperial College London)

  • Gustavo Grinblat

    (Laboratorio de Electrónica Cuántica, FCEN, Universidad de Buenos Aires)

  • Rupert F. Oulton

    (The Blackett Laboratory, Imperial College London)

  • Andrea V. Bragas

    (Laboratorio de Electrónica Cuántica, FCEN, Universidad de Buenos Aires)

  • Stefan A. Maier

    (The Blackett Laboratory, Imperial College London)

Abstract

Nanoplasmonics has recently revolutionized our ability to control light on the nanoscale. Using metallic nanostructures with tailored shapes, it is possible to efficiently focus light into nanoscale field ‘hot spots’. High field enhancement factors have been achieved in such optical nanoantennas, enabling transformative science in the areas of single molecule interactions, highly enhanced nonlinearities and nanoscale waveguiding. Unfortunately, these large enhancements come at the price of high optical losses due to absorption in the metal, severely limiting real-world applications. Via the realization of a novel nanophotonic platform based on dielectric nanostructures to form efficient nanoantennas with ultra-low light-into-heat conversion, here we demonstrate an approach that overcomes these limitations. We show that dimer-like silicon-based single nanoantennas produce both high surface enhanced fluorescence and surface enhanced Raman scattering, while at the same time generating a negligible temperature increase in their hot spots and surrounding environments.

Suggested Citation

  • Martín Caldarola & Pablo Albella & Emiliano Cortés & Mohsen Rahmani & Tyler Roschuk & Gustavo Grinblat & Rupert F. Oulton & Andrea V. Bragas & Stefan A. Maier, 2015. "Non-plasmonic nanoantennas for surface enhanced spectroscopies with ultra-low heat conversion," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8915
    DOI: 10.1038/ncomms8915
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    Cited by:

    1. Luca Sortino & Panaiot G. Zotev & Catherine L. Phillips & Alistair J. Brash & Javier Cambiasso & Elena Marensi & A. Mark Fox & Stefan A. Maier & Riccardo Sapienza & Alexander I. Tartakovskii, 2021. "Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    2. Joel Kuttruff & Marco Romanelli & Esteban Pedrueza-Villalmanzo & Jonas Allerbeck & Jacopo Fregoni & Valeria Saavedra-Becerril & Joakim Andréasson & Daniele Brida & Alexandre Dmitriev & Stefano Corni &, 2023. "Sub-picosecond collapse of molecular polaritons to pure molecular transition in plasmonic photoswitch-nanoantennas," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. Hong Zhou & Zhihao Ren & Dongxiao Li & Cheng Xu & Xiaojing Mu & Chengkuo Lee, 2023. "Dynamic construction of refractive index-dependent vibrations using surface plasmon-phonon polaritons," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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