An experimental study carried out by an international team of engineers and physicists has added more evidence for the value of triple-layer masking to prevent the spread of COVID-19 and similar diseases.
“Any form of mask is better than no mask,” says Professor Swetaprovo Chaudhuri (UTIAS), one of the co-authors of a new paper published today in Science Advances.
“But what we also show is that if they have enough momentum, large liquid droplets can penetrate single or even double-layer masks. When they do, they break up into smaller droplets that are more persistent in the air.”
The team — which also includes Professor Abhishek Saha at the University of California San Diego, and Professor Saptarshi Basu of the Indian Institute of Science — is leveraging expertise they developed while studying aircraft engines. They use computer models and physical experiments to understand finely dispersed droplets in air, known as aerosols.