Active and Passive Tuning of Ultranarrow Resonances in Polaritonic Nanoantennas.

Autor: Duan J; Department of Physics, University of Oviedo, Oviedo, 33006, Spain.; Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo), El Entrego, 33940, Spain., Alfaro-Mozaz FJ; CIC nanoGUNE, BRTA, Donostia-San Sebastian, 20018, Spain., Taboada-Gutiérrez J; Department of Physics, University of Oviedo, Oviedo, 33006, Spain.; Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo), El Entrego, 33940, Spain., Dolado I; CIC nanoGUNE, BRTA, Donostia-San Sebastian, 20018, Spain., Álvarez-Pérez G; Department of Physics, University of Oviedo, Oviedo, 33006, Spain.; Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo), El Entrego, 33940, Spain., Titova E; Programmable Functional Materials Lab, Brain and Consciousness Research Center, Moscow, 121205, Russia.; Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, Dolgoprudny, 141701, Russia., Bylinkin A; CIC nanoGUNE, BRTA, Donostia-San Sebastian, 20018, Spain.; Donostia International Physics Center (DIPC), Donostia-San Sebastian, 20018, Spain., Tresguerres-Mata AIF; Department of Physics, University of Oviedo, Oviedo, 33006, Spain.; Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo), El Entrego, 33940, Spain., Martín-Sánchez J; Department of Physics, University of Oviedo, Oviedo, 33006, Spain.; Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo), El Entrego, 33940, Spain., Liu S; Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA., Edgar JH; Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA., Bandurin DA; Department of Physics, Massachusetts Institute of Technology (MIT), Boston, MA, 02139, USA., Jarillo-Herrero P; Department of Physics, Massachusetts Institute of Technology (MIT), Boston, MA, 02139, USA., Hillenbrand R; IKERBASQUE, Basque Foundation for Science, Bilbao, 48013, Spain.; CIC nanoGUNE, BRTA and Department of Electricity and Electronics, EHU/UPV, Donostia-San Sebastián, 20018, Spain., Nikitin AY; Donostia International Physics Center (DIPC), Donostia-San Sebastian, 20018, Spain.; IKERBASQUE, Basque Foundation for Science, Bilbao, 48013, Spain., Alonso-González P; Department of Physics, University of Oviedo, Oviedo, 33006, Spain.; Center of Research on Nanomaterials and Nanotechnology, CINN (CSIC-Universidad de Oviedo), El Entrego, 33940, Spain.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2022 Mar; Vol. 34 (10), pp. e2104954. Date of Electronic Publication: 2022 Jan 30.
DOI: 10.1002/adma.202104954
Abstrakt: Optical nanoantennas are of great importance for photonic devices and spectroscopy due to their capability of squeezing light at the nanoscale and enhancing light-matter interactions. Among them, nanoantennas made of polar crystals supporting phonon polaritons (phononic nanoantennas) exhibit the highest quality factors. This is due to the low optical losses inherent in these materials, which, however, hinder the spectral tuning of the nanoantennas due to their dielectric nature. Here, active and passive tuning of ultranarrow resonances in phononic nanoantennas is realized over a wide spectral range (≈35 cm -1 , being the resonance linewidth ≈9 cm -1 ), monitored by near-field nanoscopy. To do that, the local environment of a single nanoantenna made of hexagonal boron nitride is modified by placing it on different polar substrates, such as quartz and 4H-silicon carbide, or covering it with layers of a high-refractive-index van der Waals crystal (WSe 2 ). Importantly, active tuning of the nanoantenna polaritonic resonances is demonstrated by placing it on top of a gated graphene monolayer in which the Fermi energy is varied. This work presents the realization of tunable polaritonic nanoantennas with ultranarrow resonances, which can find applications in active nanooptics and (bio)sensing.
(© 2022 The Authors. Advanced Materials published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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