Lezaun Capdevila, CarlosNavajas Hernández, DavidLiberal Olleta, ÍñigoBeruete Díaz, Miguel2025-04-162025-04-162024-10-08Lezaun, C., Navajas, D., Liberal, I., Beruete, M. (2024). Lithography-free perfect narrowband absorbers using simple layered structures. In [IEEE], 2024 18th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) (pp. 1-3). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/Metamaterials62190.2024.10703325.979-8-3503-7350-910.1109/Metamaterials62190.2024.10703325https://academica-e.unavarra.es/handle/2454/54005Light absorbers are key components for multiple applications ranging from heat and energy management to communications and sensing. This work explores different complex permittivity combinations for material-reflector and material-spacer-reflector configurations, achieving perfect absorption under different permittivity regimes and thicknesses. Using silicon carbide, we discuss polarization and angle dependencies, and the potential of exploiting different permittivity regimes within a device for multi-band absorption. This work helps standardize absorber design and offer insights to engineer perfect absorbers for applications such as thermal emission, absorption, communication and sensing.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.Perfect absorptionSilicon carbideDielectric functionThermal emissionPeriodic structureThermal managementTransmission line theoryAbsorption phenomenonDielectric spacerinfo:eu-repo/semantics/conferenceObject2025-04-16info:eu-repo/semantics/openAccess