scientists Unveil ‘PRO Filter‘ Inspired by Human Nose for Highly Efficient Air Purification
Researchers have developed a novel, reusable air filter that dramatically improves upon existing technology by mimicking the natural air-cleaning mechanisms of the human nose. The new filter, detailed in a recent Nature publication, utilizes a unique oil-coated polymer brush structure to capture airborne particles with exceptional efficiency and longevity.
Unlike customary filters that rely on dense fiber networks prone to clogging, the PRO filter employs capillary forces and a carefully balanced oil-polymer interaction to trap pollutants without notable pressure drop or performance degradation. This breakthrough promises cleaner air in a variety of settings – from schools and hospitals to industrial facilities - and represents a significant step toward more sustainable air purification solutions.
The key to the filter’s success lies in its design. A thin coating of oil spread evenly across polymer brushes creates a sticky surface that captures particles. The thinness of the coating prevents clogging, while the strength of capillary forces ensures particles remain trapped even in turbulent airflow. This combination of simplicity and effectiveness allows for a filter that is both highly efficient and easily reusable.
Researchers envision future iterations of the PRO filter with tailored oil coatings for specific environments and systems capable of automatically refreshing the oil or adjusting to changing air conditions. The findings are available online in the journal Nature.