More:
https://www.dailyrepublicannews.com/20241025/news/siu-researchers-investigate-technology-to-kill-supergerms-at-the-nano-level/
Here's the paper in the science journal:
https://www.science.org/doi/10.1126/sciadv.ado5555
If I read that right, it uses 160-200 nanometers thick (combined)...