"Scientists create virucidal silicon surface without any chemicals" (2023) https://news.ycombinator.com/item?id=39196781#39196822 https://news.ycombinator.com/i

"Scientists create virucidal silicon surface without any chemicals" (2023) https://news.ycombinator.com/item?id=39196781#39196822 https://news.ycombinator.com/item?id=39196781#39196822 : "Piercing of the Human Parainfluenza Virus by Nanostructured Surfaces" (2024) https://pubs.acs.org/doi/10.1021/acsnano.3c07099 https://pubs.acs.org/doi/10.1021/acsnano.3c07099 : > We used reactive ion etching to fabricate silicon (Si) surfaces featuring an array of sharp nanospikes with an approximate tip diameter of 2 nm and a height of 290 nm. The nanospike surfaces exhibited a 1.5 log reduction in infectivity of human parainfluenza virus type 3 (hPIV-3) after 6 h, a substantially enhanced efficiency, compared to that of smooth Si.