{"id":158529,"date":"2023-02-19T20:23:54","date_gmt":"2023-02-20T02:23:54","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2023\/02\/secret-of-flow-induced-electric-currents-revealed"},"modified":"2023-02-19T20:23:54","modified_gmt":"2023-02-20T02:23:54","slug":"secret-of-flow-induced-electric-currents-revealed","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2023\/02\/secret-of-flow-induced-electric-currents-revealed","title":{"rendered":"Secret of Flow-Induced Electric Currents Revealed"},"content":{"rendered":"<p style=\"padding-right: 20px\"><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/secret-of-flow-induced-electric-currents-revealed2.jpg\"><\/a><\/p>\n<p>Vibrations are the main drivers of a mysterious process in which a liquid flow generates an electric current in the solid below it.<\/p>\n<p>Liquid flowing over a conducting surface is known to produce electric currents, but the mechanism behind this effect has been unclear. New experiments with a single liquid drop dragged over a graphene surface demonstrate that viscous forces at the liquid\u2013solid interface create vibrations, or phonons, in the graphene sheet that drag electrons in the direction of the flow [<a href=\"https:\/\/physics.aps.org\/articles\/v16\/26#c1\" class=\"\">1<\/a>]. The researchers verified this \u201cphonon wind\u201d interpretation by observing multiple liquids and by testing graphene surfaces with and without wrinkles. The results could lead to highly sensitive flow sensors or to devices that can harvest electricity from flows.<\/p>\n<p>Researchers have found that water flowing over a material\u2014in particular, carbon nanotubes or graphene\u2014can generate electric currents in the solid. The effect appears in carbon materials because the surfaces are atomically flat and thus allow the liquid to flow largely unobstructed at the liquid\u2013solid boundary, explains Alessandro Siria from the \u00c9cole Normale Sup\u00e9rieure in France. Several models have been proposed to explain the flow-induced currents, often involving charges within the liquid acting on the electrons in the solid. However, experimental uncertainties have prevented researchers from determining which model is best.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vibrations are the main drivers of a mysterious process in which a liquid flow generates an electric current in the solid below it. Liquid flowing over a conducting surface is known to produce electric currents, but the mechanism behind this effect has been unclear. New experiments with a single liquid drop dragged over a graphene [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1635,4],"tags":[],"class_list":["post-158529","post","type-post","status-publish","format-standard","hentry","category-materials","category-nanotechnology"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/158529","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=158529"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/158529\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=158529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=158529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=158529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}