Lezaun Capdevila, CarlosDolado, J. S.Torres García, Alicia E.Pérez Escudero, José ManuelLiberal Olleta, ÍñigoBeruete Díaz, Miguel2023-05-152023-05-152022Lezaun, C., Dolado, J. S., Torres, A. E., Perez-Escudero, J. M., Liberal, I., & Beruete, M. (2022). Enhancing the infrared and visible emission properties of calcium silicate hydrate for radiative cooling using metamaterials. 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 1-2. https://doi.org/10.1109/IRMMW-THz50927.2022.9895888978-1-7281-9427-110.1109/IRMMW-THz50927.2022.9895888https://academica-e.unavarra.es/handle/2454/45294Two periodic structures composed of metal cylinders with different orientations are used to improve the solar reflection of calcium silicate hydrate (CSH) while maintaining its atmospheric emission. Interesting effects have been found when the distance between bars is small, suggesting that lattice effects, arising from the interaction between the rods could be leveraged in the design of these metamaterials. The size of the metal bars is selected based on state of the art micro-manufacturing techniques. This study limits its scope to a CSH gel model; i.e. the most important component of cement-based materials. Further research will be undertaken to consider a best description of the dielectric function of concrete.application/pdfeng© 2022 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.ReflectivityCoolingCalciumAtmospheric modelingMetamaterialsConcreteReflectioninfo:eu-repo/semantics/conferenceObject2023-05-15info:eu-repo/semantics/openAccess