In 2023, CUHK researchers milled glass bubbles for 5 minutes before mixing cooling paint; solar reflectivity rose from 75.8% to 95.8% during field tests at noon

Innovative researchers have unveiled a groundbreaking paint designed for energy-free cooling in buildings. By incorporating larger glass bubbles and optimizing their milling process, this paint achieves remarkable solar reflectance, leading to lower surface temperatures. This advancement not only makes cutting-edge cooling technology more affordable but also ensures easier access for wider applications. Upcoming tests will evaluate its durability over time and potential for large-scale production.