Lezaun Capdevila, CarlosPacheco-Peña, VíctorBeruete Díaz, Miguel2025-04-152025-04-152024-10-08Lezaun, C., Pacheco-Peña, V., Beruete, M. (2024) Dielectric sensing of deeply subwavelength analytes using epsilon-near-zero waveguides. In 2024 International Conference on Electromagnetics in Advanced Applications (ICEAA) (pp. 83-83). IEEE. https://doi.org/10.1109/ICEAA61917.2024.10701697.978-8-3503-6098-110.1109/ICEAA61917.2024.10701697https://academica-e.unavarra.es/handle/2454/54000The advent of metamaterials brought new wave-matter interaction paradigms to manipulate field and waves at will. Their applications are numerous: antennas, lenses, invisibility cloaking, computing, vortex beams and more. In turn, epsilon-near-zero (ENZ) metamaterials opened up new phenomena for light manipulation due to their exotic propagation constant, wavenumber and characteristic impedance. In 2008, it was demonstrated that a rectangular waveguide can emulate ENZ media by working near the cutoff frequency [1]. Moreover, the incredible field confinement inside the ENZ waveguide provided interesting features for sensing applications [2]. Our work further develops the idea of a dielectric body sensor based on a ENZ waveguide by considering an analyte partially filling the waveguide [3] and demonstrating empirically the setup [4].application/pdfeng© 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.Waveguide componentsRectangular waveguidesElectromagnetic waveguidesMediaMetamaterialsSensorsDielectricsPropagation constantImpedanceLensesinfo:eu-repo/semantics/conferenceObject2025-04-15info:eu-repo/semantics/openAccess