Self-Cleaning Pathogen-Repellent Coatings

HKU
Overview

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
Application
  • The coatings can be readily applied to diverse substrates, including glass, fabric, steel, copper, mask, paper and gloves

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.

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