Superdurable, Flexible Ceramic Nanofibers for Sustainable Passive Radiative Cooling.

ABSTRACT: Passive daytime radiative cooling can mitigate global warming but requires durable and resilient materials for real-world applications. Here, a robust superhydrophobic ZrO₂-Al₂O₃ nanofiber (sh-ZANF) membrane is fabricated via electrospinning followed by fluorine-free surface modification. Optically engineered sh-ZANF attains an extremely high solar reflectivity of 97.7% due to strong scattering at numerous fiber/air interfaces with a high refractive index contrast (n_fiber = 2.04, n_air = 1). sh-ZANF also possesses a high atmospheric transparency window emissivity of 95.6% originating from phonon-polariton resonances of abundant Al-O/Zr-O bonds without a strong Reststrahlen effect. The optimal sh-ZANF membrane demonstrates

SUBMITTER: Chen DC 

PROVIDER: S-EPMC12356120 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature