{"id":322585,"date":"2017-05-30T16:36:29","date_gmt":"2017-05-30T20:36:29","guid":{"rendered":"https:\/\/spaceweekly.com\/?guid=5319ca1fec918fea984ad07205b2c54b"},"modified":"2017-05-30T16:36:29","modified_gmt":"2017-05-30T20:36:29","slug":"physicists-discover-why-drying-liquid-crystal-drops-leave-unusual-coffee-rings-2","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=322585","title":{"rendered":"Physicists discover why drying liquid crystal drops leave unusual &#8216;coffee rings&#8217;"},"content":{"rendered":"<p>In previous papers, University of Pennsylvania physicists investigated the &#8220;coffee ring effect,&#8221; the ring-shaped stain of particles left after drops of coffee evaporate. In one paper, they learned how to undo this effect by altering particle shape. Now, in a new paper published in Nature Communications, they have uncovered the complex and remarkably different behavior arising in a liquid crystal drop that is drying.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In previous papers, University of Pennsylvania physicists investigated the &#8220;coffee ring effect,&#8221; the ring-shaped stain of particles left after drops of coffee evaporate. In one paper, they learned how to undo this effect by altering particle shape. Now&#8230;<\/p>\n","protected":false},"author":0,"featured_media":615444,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-322585","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/322585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=322585"}],"version-history":[{"count":1,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/322585\/revisions"}],"predecessor-version":[{"id":322586,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/322585\/revisions\/322586"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/615444"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=322585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=322585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=322585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}