Multifunctional Porous Polymer Nanofilms


HKUST invented a self-supporting and porous polymer nanofilms at thicknesses of around 100 nm. The nanofilm is thinner than hair and yet over 25 times stronger than that of stainless steel with the same mass. Among all the known ultra-thin films, the nanofilm is the strongest and highly transparent, while being thin and porous with adjustable porous properties.

  • Multifunctional Porous Polymer Nanofilms 0
  • Multifunctional Porous Polymer Nanofilms 1
  • Multifunctional Porous Polymer Nanofilms 2
Commercialisation opportunities
Technology licensing agreement
Problem addressed

An ultrathin polymer nanofilm, which is not only strong, but is also extremely transparent, gas-permeable and water-proof with adjustable porous properties

  • The polymer nanofilm provides excellent porous properties with ultra-thin thickness and high mechanical strength
  • High transparency and gas permeability
Key impact
  • The material's superior properties make it perfect for supporting numerous inventions such as air filtration membranes, nanomaterial loudspeakers, and various energy, environment, and metamaterial uses spanning all aspects of daily life.
  • Filtration: Water purification, air filtration, nanofiltration
  • Electronics: Flexible display, wearable device
  • Healthcare: Antibacterial film, skin sensor
  • Energy: Flexible ultrathin batteries, high-energy-density capacitors
The Hong Kong University of Science and Technology (HKUST)

The Hong Kong University of Science and Technology (HKUST) ( is a world-class research intensive university that focuses on science, technology and business as well as humanities and social science. HKUST offers an international campus, and a holistic and interdisciplinary pedagogy to nurture well-rounded graduates with global vision, a strong entrepreneurial spirit and innovative thinking. Over 80% of our research work were rated “Internationally excellent” or “world leading” in the Research Assessment Exercise 2020 of Hong Kong’s University Grants Committee. We were ranked 3rd in Times Higher Education’s Young University Rankings 2022, and our graduates were ranked 23rd worldwide and among the best from universities from Asia in Global University Employability Survey 2021.