{"id":235483,"date":"2017-03-28T18:27:16","date_gmt":"2017-03-28T21:27:16","guid":{"rendered":"http:\/\/revistapesquisa.fapesp.br\/en\/?p=235483"},"modified":"2017-03-28T18:27:16","modified_gmt":"2017-03-28T21:27:16","slug":"solid-sphere-floats-on-sound","status":"publish","type":"post","link":"https:\/\/revistapesquisa.fapesp.br\/en\/solid-sphere-floats-on-sound\/","title":{"rendered":"Solid sphere floats on sound"},"content":{"rendered":"<div id=\"attachment_235484\" style=\"max-width: 310px\" class=\"wp-caption alignright\"><a href=\"http:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2017\/03\/013_Tecno_Levita.jpg\" rel=\"attachment wp-att-235484\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-235484\" src=\"http:\/\/revistapesquisa.fapesp.br\/wp-content\/uploads\/2017\/03\/013_Tecno_Levita-300x235.jpg\" alt=\"25-kHz sound wave floats 5-cm-diameter ball\" width=\"300\" height=\"235\" \/><p class=\"wp-caption-text\"><span class=\"media-credits-inline\">Applied Physics Letters <\/span><\/a> 25-kHz sound wave floats 5-cm-diameter ball<span class=\"media-credits\">Applied Physics Letters <\/span><\/p><\/div>\n<p>Acoustic levitation, which is produced by sound waves, has grown more sophisticated. Three ultrasonic transducers arranged in a tripod formation and set to emit at a frequency of 25 kilohertz (kHz) suspended a polystyrene sphere five centimeters in diameter (<em>Applied Physics Letters<\/em>, July 2016). \u201cWe\u2019ve shown that it is possible to use sound waves to levitate much larger objects than thought previously,\u201d says physicist Marco Aur\u00e9lio Brizzotti Andrade, of the University of S\u00e3o Paulo (USP), first author of the study (<a href=\"http:\/\/revistapesquisa.fapesp.br\/en\/2015\/02\/27\/suspended-by-sound\/?\" target=\"_blank\"><em>see <\/em>PESQUISA FAPESP<em>\u00a0n\u00ba 228<\/em><\/a>). According to Andrade, acoustic levitation using ultrasonic waves had so far managed to float bodies with a diameter of four millimeters at most. Professor Anne Bernassau, of Heriot-Watt University in Scotland, also took part in the study. Among possible applications of this new approach to the technique, the authors mentioned contactless chemical reactions, transportation and handling of corrosive substances, contactless handling of liquid substances, and the production of new kinds of drugs.<\/p>\n","protected":false},"excerpt":{"rendered":"Acoustic levitation suspended a sphere five centimeters in diameter","protected":false},"author":475,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[168],"tags":[235],"coauthors":[785],"class_list":["post-235483","post","type-post","status-publish","format-standard","hentry","category-technoscience","tag-physics"],"acf":[],"_links":{"self":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/235483","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/users\/475"}],"replies":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/comments?post=235483"}],"version-history":[{"count":0,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/235483\/revisions"}],"wp:attachment":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/media?parent=235483"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/categories?post=235483"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/tags?post=235483"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/coauthors?post=235483"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}