Scientists Develop Plastic Film That Physically Destroys Viruses on Contact
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Researchers have created a thin acrylic film covered in microscopic nanopillars that physically tears apart viruses. In lab tests, the film damaged about 94% of human parainfluenza virus particles within an hour, rendering them unable to reproduce. The design uses low-cost materials and a manufacturing process that could be scaled up using existing factory equipment.
Facts First
- A new acrylic film destroys viruses mechanically using microscopic surface structures called nanopillars.
- The nanopillars stretch a virus's outer layer until it breaks, a method distinct from chemical disinfection.
- In lab tests, it damaged about 94% of hPIV-3 virus particles within an hour, preventing reproduction.
- The antiviral effect depends heavily on nanopillar spacing, with 60 nanometers apart being most effective.
- The design is intended for low-cost, scalable manufacturing using a mold adaptable to roll-to-roll production.
What Happened
Scientists from RMIT University in Australia have developed a thin plastic film that physically destroys viruses upon contact. The film is made of acrylic and is covered with microscopic structures called nanopillars. These nanopillars use mechanical force to grip a virus and stretch its outer layer until it breaks, rather than relying on chemical disinfectants. In laboratory experiments using the human parainfluenza virus 3 (hPIV-3), approximately 94% of virus particles were torn apart or damaged beyond the ability to reproduce within one hour of contact. The research was published in the journal Advanced Science.
Why this Matters to You
This technology could lead to new, long-lasting antiviral surfaces in public spaces like hospitals, schools, and public transport, potentially reducing the spread of certain viral infections. Because it works mechanically and uses low-cost materials, products using this film might be more durable and accessible than some chemical-based alternatives. You may eventually encounter this technology integrated into high-touch surfaces, offering a passive layer of protection.
What's Next
The research team plans to test the technology on smaller and non-enveloped viruses, which lack the fatty outer membrane of the hPIV-3 virus used in the current study. Scientists also intend to examine the film's effectiveness on curved surfaces, as curvature can alter the critical spacing between nanopillars. The mold used for the film can be adapted to roll-to-roll manufacturing, which could allow for production at scale using existing factory equipment if further testing is successful.