#Masks: #virus-trapping filter with 96% efficiency

Researchers at the University of Tokyo have designed a new filter that traps viruses without blocking airflow. The COVID-19 pandemic highlighted the need for effective masks, but fine mesh fabrics often restrict breathing.
Viruses are about 100 nanometers in size, so masks need very small pores to trap them effectively.https://indianf.com/masks-nanoporous-virus-filter-japan-tokyo-university/