Virus-Rupturing Nano-Pillar Film Gives Surfaces a Chemical-Free Defense

A flexible acrylic film coated with thousands of ultra-fine nanopillars mimics cicada wing textures to mechanically rupture virus particles on contact, offering a scalable, chemical-free way to reduce surface transmission. Lab tests against human parainfluenza virus type 3 showed up to 94% of viruses damaged within an hour, with the closest pillar spacing (~60 nanometres) proving most effective. Potential applications include phones, public transport, hospital equipment, and office desks, though real-world durability and long-term performance require further study.