journal article·2023-06Open access

Engineering Fano‐Resonant Hybrid Metastructures with Ultra‐High Sensing Performances

Giuseppe Emanuele Lio, Antonio Ferraro, Rafał Kowerdziej, Alexander O. Govorov, Zhiming Wang, Roberto Caputo

Advanced Optical Materials· Volume 11· Issue 12

Abstract

Abstract Metamaterials‐based sensors are of primary interest in physics, materials science, medicine, and biophysics thanks to their ability to detect very tiny amount of molecules spread into a medium. Here, a metastructure utilizing the epsilon near zero (εNZ) and Fano–Rabi physics is engineered to design a system with ultra‐high sensitivity. So far, a dedicated study of such systems has been missing. In this work, the authors report the results of their efforts to fill the gap by considering a metasurface, designed as a periodical array of rings with a cross in their center, placed on top of a silver (Ag) and zinc oxide (ZnO) epsilon near‐zero optical nanocavity (εNZ‐ONC) metamaterial. The accurate selection of the metasurface parameters allows the design of a sensor exhibiting an extremely high sensitivity of about 16 000 and 21 000 nm RIU−1 depending on incoming polarization. This work paves the way for the development of novel groundbreaking devices for biomedical and environmental application based on plasmonic and photonic design principles.
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Research context

OpenAlex topics: Metamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research · Photonic Crystals and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Physics Department University of Florence Via Sansone 6 Sesto Fiorentino, (FI) 50019 Italy

European Laboratory for Non Linear Spectroscopy (LENS) Via Nello Carrara 1 Sesto Fiorentino, (FI) 50019 Italy

Consiglio Nazionale delle Ricerche ‐ Istituto di Nanotecnologia (CNR‐Nanotec) via P. Bucci cubo 33c Rende CS 87036 Italy

Institute of Applied Physics Military University of Technology 2 Kaliskiego St. Warsaw 00‐908 Poland

Department of Physics and Astronomy Ohio University Athens OH 45701 USA

Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 China

Institute for Advanced Study Chengdu University Chengdu 610106 China

Physics Department University of Calabria via P. Bucci cubo 31c Rende CS 87036 Italy

Funding

Ministero degli Affari Esteri e della Cooperazione Internazionale · Narodowa Agencja Wymiany Akademickiej · Wojskowa Akademia Techniczna

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