[18p-A305-1~11] 3.11 Nanoscale optical science and near-field optics (formerly 3.12)

[18p-A305-11] Development of radiative cooling materials consisting of inorganic-microparticle sheet

〇Tsunenobu Onodera¹, Makoto Shimizu¹, Hiroo Yugami¹, Hidetoshi Oikawa¹, Junichi Koike¹ (1.Tohoku Univ.)

Keywords:radiative cooling, microparticles, inorganic-organic hybrid materials

Day-time sub-ambient cooling has been achieved using inorganic-microparticle sheets consisting of silica and alumina microparticles. Total solar reflectance (lambda = 0.3–2.5 µm) and emissivity (lambda = 8–13 µm) of the sheet were 95.5% and 95.1%, respectively, which supported the high cooling performance.