This New Material Kills Viruses the Moment They Touch It

Key Points:

• Australian researchers at RMIT University have developed a flexible acrylic film embedded with nanoscale pillars that physically rupture enveloped viruses within one hour without using chemical agents, potentially benefiting hospital surfaces and consumer electronics.
• The film’s antiviral action relies on closely spaced nanopillars (around 60 nanometers apart) that collectively stretch and tear the viral envelope, reducing infectivity of human parainfluenza virus type 3 by up to 94%, with effectiveness diminishing as pillar spacing increases.
• Tests confirmed the mechanism is purely mechanical, damaging the viral outer membrane but leaving viral RNA intact, and simulations showed stress levels exceeding the rupture threshold of the virus’s lipid envelope.
• The material is made from acrylic resin on a PET backing, allowing for flexible, smooth films compatible with roll-to-roll manufacturing, facilitating potential large-scale production and commercial development.
• Limitations include the focus on a single enveloped virus type, unknown effects on non-enveloped viruses, challenges with curved surfaces altering pillar spacing, and material degradation over time, which require further investigation.