Self-Cleaning Pathogen-Repellent Coatings


The technology is about a self-cleaning pathogen-repellent coating that can be used to both repel away and inactivate pathogens (including SARS-CoV-2) attached on the surface in a controllable manner

  • Self-Cleaning Pathogen-Repellent Coatings 0
  • Self-Cleaning Pathogen-Repellent Coatings 1
Commercialisation opportunities
IP licensing
Problem addressed

Pathogens such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on metal, glass, wood, fabric, and plastic surfaces can remain infectious for several hours to days, preventing their spread is extremely challenging

Key impact
  • Good efficacy and broad antibacterial and antivirus spectrum, including SARS-CoV-2, a repelling efficiency of as high as 99.99999% to SARS-CoV-2 virus-laden droplets can be achieved
  • Colour and surface features: from transparent (SAP SiO2, >90% transmittance rate) to white colour, blue and black; all coatings appear smooth to the naked eyes, while it is very rough in nanoscale
  • Mechanical durability: abrasion test with sandpaper was done and showed no big change of surface micro-texture after a hundred cycles of rubbing, and the virus repellent functionality can also be maintained
  • The coatings can be readily applied to diverse substrates, including glass, fabric, steel, copper, mask, paper and gloves


  • US Provisional Application No. 63/194,248
The University of Hong Kong (HKU)

Founded in 1911, The University of Hong Kong (HKU) is the first and oldest institution of higher education in Hong Kong. For over a century, the University has dedicated itself to creating knowledge, providing education, and serving society. Today, HKU has an established worldwide reputation for being a research-led comprehensive University with ten Faculties and a strong commitment to intellectual freedom, liberty and diversity. HKU has a proud record of academic recognition in researches through honours and awards received from both local and international bodies.