TY - GEN
T1 - Nanoparticle Derived Suppressed-Scattering Bands For Radiative Cooling
AU - Lezaun, Carlos
AU - Perez-Escudero, Jose M.
AU - Torres-Garcia, Alicia E.
AU - Caggiano, Antonio
AU - Peralta, Ignacio
AU - Dolado, Jorge S.
AU - Liberal, Inigo
AU - Beruete, Miguel
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Light scattering using resonant nanoparticles is crucial for improving sun irradiance reflection in a daytime radiative cooler. Popular nanoparticles in radiative cooling literature are analyzed in terms of scattering performance due to material dispersion. Different scattering properties in the infrared range have been detected while a similar behavior can be achieved in the solar range due to changes in material dispersion. Also, suppressed scattering windows are produced by dispersive nanoparticles, allowing high reflectance while enabling thermal emission selectively. Material dispersion alone produces such scattering windows, thus, given a material, they will always remain in the same region regardless geometry and location of particles. Lastly, calcium silicate hydrate (CSH), the main phase of concrete, is studied as a dispersive host example. These results demonstrate the importance of a co-design between host and nanoparticles dispersion for daytime radiative cooling and that nanoporosities design are a key ingredient that could allow concrete-based daytime radiative coolers.
AB - Light scattering using resonant nanoparticles is crucial for improving sun irradiance reflection in a daytime radiative cooler. Popular nanoparticles in radiative cooling literature are analyzed in terms of scattering performance due to material dispersion. Different scattering properties in the infrared range have been detected while a similar behavior can be achieved in the solar range due to changes in material dispersion. Also, suppressed scattering windows are produced by dispersive nanoparticles, allowing high reflectance while enabling thermal emission selectively. Material dispersion alone produces such scattering windows, thus, given a material, they will always remain in the same region regardless geometry and location of particles. Lastly, calcium silicate hydrate (CSH), the main phase of concrete, is studied as a dispersive host example. These results demonstrate the importance of a co-design between host and nanoparticles dispersion for daytime radiative cooling and that nanoporosities design are a key ingredient that could allow concrete-based daytime radiative coolers.
UR - https://www.scopus.com/pages/publications/85177604334
U2 - 10.1109/Metamaterials58257.2023.10289325
DO - 10.1109/Metamaterials58257.2023.10289325
M3 - Conference contribution
AN - SCOPUS:85177604334
T3 - 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
SP - 189
EP - 191
BT - 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
Y2 - 11 September 2023 through 16 September 2023
ER -