In a groundbreaking collaboration, scientists from China and the United States have developed a new directional radiative cooler designed for use in walls, vehicles, and textiles. This innovative technology aims to combat climate change and mitigate the effects of urban heat islands, which have become increasingly problematic in densely populated areas. The new cooling material addresses the limitations of conventional cooling systems, potentially reducing reliance on energy-intensive air conditioning [8f881e02].
Lead author Li Wei from the Changchun Institute of Optics highlighted that the new emitter can maintain a temperature 2.5 degrees Celsius cooler than ambient conditions, even under peak sunlight. This advancement could significantly lower energy costs associated with air conditioning, providing a more sustainable solution for cooling in urban environments [8f881e02].
The technology features a unique sawtooth-shaped base composed of silver and silicon nitride layers, which enhances its cooling capabilities. The study detailing this innovation was published in the prestigious Science journal in November 2024, showcasing the collaborative efforts of researchers from Peking University, Stanford University, and the City University of New York [8f881e02].
This development comes at a crucial time as cities around the world grapple with rising temperatures and increased energy demands. By integrating such cooling technologies, urban areas can not only improve energy efficiency but also contribute to broader sustainability goals in the fight against climate change [8f881e02].