{"id":6058,"date":"2021-03-08T17:46:58","date_gmt":"2021-03-09T01:46:58","guid":{"rendered":"https:\/\/depts.washington.edu\/pandemicalliance\/?p=6058"},"modified":"2021-03-08T17:46:58","modified_gmt":"2021-03-09T01:46:58","slug":"on-secondary-atomization-and-blockage-of-surrogate-cough-droplets-in-single-and-multilayer-face-masks","status":"publish","type":"post","link":"https:\/\/depts.washington.edu\/pandemicalliance\/2021\/03\/08\/on-secondary-atomization-and-blockage-of-surrogate-cough-droplets-in-single-and-multilayer-face-masks\/","title":{"rendered":"On Secondary Atomization and Blockage of Surrogate Cough Droplets in Single- and Multilayer Face Masks"},"content":{"rendered":"<ul>\n<li>Using high-speed imaging and physics-based analyses, large (&gt; 250 \u03bcm) simulated cough droplets were shown to penetrate single- or double-layer mask materials to a significant extent. The authors suggest that expelled droplets may atomize into smaller (&lt; 100 \u03bcm) droplets that could remain airborne for longer periods, potentially impacting mask efficacy. For a droplet of initial diameter 620 \u03bcm, a single layer mask restricted only 30% of the initial droplet volume, compared to 92% with a double-layered mask. The authors suggest that in the absence of N95 masks being made available to the public, masks with three layers could block droplet spread.<\/li>\n<\/ul>\n<p><i>Sharma et al.\u00a0(Mar 5, 2021). On Secondary Atomization and Blockage of Surrogate Cough Droplets in Single- and Multilayer Face Masks. Science Advances. <\/i><a href=\"https:\/\/doi.org\/10.1126\/sciadv.abf0452\">https:\/\/doi.org\/10.1126\/sciadv.abf0452<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using high-speed imaging and physics-based analyses, large (&gt; 250 \u03bcm) simulated cough droplets were shown to penetrate single- or double-layer mask materials to a significant extent. The authors suggest that expelled droplets may atomize into smaller (&lt; 100 \u03bcm) droplets that could remain airborne for longer periods, potentially impacting mask efficacy. For a droplet of&#8230;<\/p>\n<div><a class=\"more\" href=\"https:\/\/depts.washington.edu\/pandemicalliance\/2021\/03\/08\/on-secondary-atomization-and-blockage-of-surrogate-cough-droplets-in-single-and-multilayer-face-masks\/\">Read more<\/a><\/div>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[6],"tags":[74,37],"topic":[22],"class_list":["post-6058","post","type-post","status-publish","format-standard","hentry","category-article-summary","tag-masks","tag-non-pharm-interventions","topic-non-pharmaceutical-interventions"],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/6058","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/comments?post=6058"}],"version-history":[{"count":1,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/6058\/revisions"}],"predecessor-version":[{"id":6059,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/posts\/6058\/revisions\/6059"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/media?parent=6058"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/categories?post=6058"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/tags?post=6058"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/depts.washington.edu\/pandemicalliance\/wp-json\/wp\/v2\/topic?post=6058"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}