biostudies-literatureYang SState Key Laboratory of Special Functional Wateproof MaterialsFundamental Research Funds for the Central UniversitiesState Key Laboratory of Advanced Welding and JoiningGuangdong Basic and Applied Basic Research Foundatione2415121https://www.ebi.ac.uk/biostudies/studies/S-EPMC12302567biostudies-literatureUnknown12(28)Passive thermal-regulation strategies have become increasingly important due to the strain alleviated on power grids for temperature management. Designing a system capable of automatically switching between cooling and heating modes in response to changing ambient conditions presents several specific challenges that engineers and researchers are actively addressing. In this research, a CaCl₂ incorporated PNIPAM coated fluorinated poly(aryl ether) (FPAE) porous film with tunable reflectance is developed. The aim is to mitigate the reliance on active cooling systems, which consume significant amounts of energy. The moisture-temperature dual sensitive film exhibits a tunable reflectance range between 91.1% and 39.1% via phase change of the PNIPAM layer. Coupled with an infrared emiAdvanced science (Weinheim, Baden-Wurttemberg, Germany)Self-Adaptive Reflectance Film for Passive Temperature Regulation in Diverse Environments.PMC12302567AUGA98035024212022A1515110919AWJ-22Z01AUGA9803100120AUEA5740203321SKWL-2021KF03Zou XLiu MTang SCai YLi BTang DYuan XYang SYe ZSong YfalseSelf-Adaptive Reflectance Film for Passive Temperature Regulation in Diverse Environments.Passive thermal-regulation strategies have become increasingly important due to the strain alleviated on power grids for temperature management. Designing a system capable of automatically switching between cooling and heating modes in response to changing ambient conditions presents several specific challenges that engineers and researchers are actively addressing. In this research, a CaCl₂ incorporated PNIPAM coated fluorinated poly(aryl ether) (FPAE) porous film with tunable reflectance is developed. The aim is to mitigate the reliance on active cooling systems, which consume significant amounts of energy. The moisture-temperature dual sensitive film exhibits a tunable reflectance range between 91.1% and 39.1% via phase change of the PNIPAM layer. Coupled with an infrared emi2025-01-01T00:00:00Z2025 Jul2026-03-27T17:00:13.037Z2025-08-28T03:08:56.061ZS-EPMC123025674028565710.1002/advs.202415121