Versatile Janus dressing with radiative cooling and exudate control for outdoor wound management

nanoparticles under sunlight provides the dressing with superior antibacterial capability (nearly 100% antibacterial rate), which mitigates infection risks. Furthermore, the hierarchical structure confers asymmetric wettability and achieves effective exudate management. Thanks to these multifunctional attributes, the Janus dressing significantly accelerates the healing of sunlight-exposed wounds, as validated in a rat full-thickness skin defect model under high-temperature sunlight. Collectively, this work not only tackles wound overheating in outdoor settings but also provides an innovative strategy and a theoretical foundation for the development of intelligent wound dressings.