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URL copied Representative image Multilayer masks are most effective at preventing aerosol generation, says a new study conducted by a team led by researchers at Bengaluru-based Indian Institute of Science (IISc). The study was carried out in collaboration with scientists in UC San Diego and University of Toronto Engineering. According to IISc, when a person coughs, large droplets (>200 microns) hit the inner surface of a mask at a high speed, penetrate the mask fabric and break up or atomise into smaller droplets, which have a greater chance of aerosolisation and thereby carrying viruses like SARS-CoV-2 with them. Using a high-speed camera, the team closely tracked individual cough-like droplets impinging on single, double and multi-layered masks, and noted the size distribution of the daughter droplets generated after penetration through the mask fabric, an IISc statement said on Saturday.

Saptarshi basuShubham sharmaDepartment of mechanical engineeringUniversity of toronto engineeringIndian institute of science iiscImage sourceBengaluru based indian instituteMechanical engineeringMulti layer maskN95 maskMask and protectionHealth newsசாப்புதார்ஷி பாசுசுபம் ஷர்மாதுறை ஆஃப் இயந்திர பொறியியல்பல்கலைக்கழகம் ஆஃப் டொராண்டோ பொறியியல்