At a press conference on 27 March 2019, Ir. Professor Wallace Leung Woon-Fong, Chair Professor of Innovative Products and Technologies of the Department of Mechanical Engineering, introduced a PolyU-developed electrostatically charged nanofiber filter with multiple separator layers. The novel PVDF nanofiber filter can capture pollutant particles that are below 100 nm in diameter. It demonstrates much better performance in breathability and filtration efficiency, compared with existing technologies and products, and has a longer shelf life up to 90 days.

Professor Leung said the filter or face mask applying the innovation would be an ideal defense against virus, such as measles and SARS, during an outbreak. The novel technology also has great potential for applying in the analytical technique of Western Blot, and in effective release of protein-based drugs.

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