{"id":61135,"date":"2017-03-05T07:30:56","date_gmt":"2017-03-05T10:30:56","guid":{"rendered":"https:\/\/espacoecologico.com.br\/arquivo\/?p=61135"},"modified":"2017-03-04T21:34:02","modified_gmt":"2017-03-05T00:34:02","slug":"um-novo-estado-da-materia-foi-criado-em-laboratorio-conheca-os-supersolidos","status":"publish","type":"post","link":"https:\/\/espacoecologico.com.br\/arquivo\/um-novo-estado-da-materia-foi-criado-em-laboratorio-conheca-os-supersolidos\/","title":{"rendered":"Um novo estado da mat\u00e9ria foi criado em laborat\u00f3rio: conhe\u00e7a os supers\u00f3lidos"},"content":{"rendered":"<p><script src=\"http:\/\/b.scorecardresearch.com\/c2\/6906435\/cs.js\" async=\"\" type=\"text\/javascript\"><\/script><script src=\"http:\/\/cdn.teads.tv\/media\/format\/v3\/teads-format.min.js?20173420\" async=\"\"><\/script><script 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Desde que foi proposto teoricamente na R\u00fassia comunista, ningu\u00e9m tinha chegado t\u00e3o perto de criar um supers\u00f3lido: estado em que a mat\u00e9ria \u00e9 r\u00edgida, mas ainda flui como um l\u00edquido superfluido.<\/p>\n<p><script src=\"http:\/\/b.scorecardresearch.com\/c2\/6906435\/cs.js\" async=\"\" type=\"text\/javascript\"><\/script><script src=\"http:\/\/cdn.teads.tv\/media\/format\/v3\/teads-format.min.js?20173420\" async=\"\"><\/script><script src=\"http:\/\/odb.outbrain.com\/utils\/get?url=http%3A%2F%2Fsuper.abril.com.br%2Fciencia%2Fum-novo-estado-da-materia-foi-criado-em-laboratorio-conheca-os-supersolidos%2F&amp;settings=true&amp;recs=true&amp;widgetJSId=SB_2&amp;key=NANOWDGT01&amp;idx=1&amp;version=01001407&amp;ref=&amp;apv=true&amp;sig=77377685&amp;format=html&amp;rand=45174&amp;lsd=72986e7c-1304-414f-b569-ebe2538916cd&amp;t=MV82MWIzOTk4OGQ0ZjZkYjQyYTNjZWE0NzVkYThhNzZjMF8w&amp;winW=1536&amp;winH=747&amp;adblck=false\" async=\"\" type=\"text\/javascript\" 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src=\"\/\/www.google-analytics.com\/analytics.js\" async=\"\"><\/script><script src=\"http:\/\/www.google-analytics.com\/analytics.js\" async=\"\" type=\"text\/javascript\"><\/script><script src=\"http:\/\/www.google-analytics.com\/ga.js\" async=\"\" type=\"text\/javascript\"><\/script><script src=\"\/\/www.googletagmanager.com\/gtm.js?id=GTM-MMNHP8\" async=\"\"><\/script><script src=\"https:\/\/connect.facebook.net\/en_US\/fbevents.js\" async=\"\"><\/script><script src=\"\/\/ads.rubiconproject.com\/header\/11134.js\"><\/script>Um novo estado da mat\u00e9ria foi criado em laborat\u00f3rio: conhe\u00e7a os supers\u00f3lidos | Superinteressante<script type=\"application\/ld+json\">\/\/ <![CDATA[\n{\"@context\":\"http:\/\/schema.org\",\"@type\":\"NewsArticle\",\"mainEntityOfPage\":{\"@type\":\"WebPage\",\"@id\":\"http:\/\/super.abril.com.br\/ciencia\/um-novo-estado-da-materia-foi-criado-em-laboratorio-conheca-os-supersolidos\/\"},\"headline\":\"Um novo estado da mat\u00e9ria foi criado em laborat\u00f3rio: conhe\u00e7a os supers\u00f3lidos\",\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\/\/abrilsuperinteressante.files.wordpress.com\/2017\/03\/supersolidos.jpg?quality=70&#038;strip=all&#038;w=1024\",\"height\":682,\"width\":1024},\"datePublished\":\"2017-03-03T20:59:58-0300\",\"dateModified\":\"2017-03-03T20:59:58-0300\",\"author\":[{\"@type\":\"Person\",\"name\":\"Ana Carolina Leonardi\"}],\"publisher\":{\"@type\":\"Organization\",\"name\":\"Superinteressante\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\/\/abrilsuperinteressante.files.wordpress.com\/2017\/01\/screen-shot-2017-01-13-at-7-13-38-pm.png?w=150\",\"width\":150,\"height\":58}},\"description\":\"Pesquisadores em pa\u00edses diferentes criaram, ao mesmo tempo, candidatos fortes a primeiros supers\u00f3lidos da hist\u00f3ria - fen\u00f4meno considerado \\\"imposs\u00edvel\\\" por 50 anos, \"}\n\/\/ ]]><\/script><script 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]]><\/script><noscript><img loading=\"lazy\" height=\"1\" width=\"1\" style=\"display:none\"    src=\"https:\/\/www.facebook.com\/tr?id=1869534393278100&#038;ev=PageView&#038;noscript=1\"    \/><\/noscript><!-- DO NOT MODIFY --> <!-- End Facebook Pixel Code --><script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/underscore.js\/1.5.2\/underscore-min.js\" type=\"text\/javascript\"><\/script><script src=\"https:\/\/cdn.boomtrain.com\/analyticstrain\/abril-superinteressante\/analyticstrain.min.js\" type=\"text\/javascript\"><\/script><script src=\"https:\/\/d3r7h55ola878c.cloudfront.net\/btn\/1.0.7\/nudgespot-loader.js\" type=\"text\/javascript\"><\/script><script src=\"\/\/www.npttech.com\/advertising.js\" async=\"true\"><\/script><script src=\"http:\/\/rtax.criteo.com\/delivery\/rta\/rta.js?netId=4317&amp;cookieName=crtg_rta&amp;rnd=80358578149&amp;varName=crtg_content\" async=\"\" type=\"text\/javascript\"><\/script><script src=\"https:\/\/x-abril.inventorycdn.com\/js?cookie=rh_abril\" async=\"\" type=\"text\/javascript\"><\/script><script src=\"https:\/\/cdn.tinypass.com\/api\/libs\/psl.js\" async=\"\" type=\"text\/javascript\" charset=\"utf-8\" data-requirecontext=\"_\" data-requiremodule=\"psl\"><\/script><script src=\"https:\/\/securepubads.g.doubleclick.net\/gpt\/pubads_impl_111.js\" async=\"\"><\/script><\/p>\n<div class=\"container main-container \">\n<div class=\"row\">\n<div class=\"col-md-8\">\n<article id=\"post-173712\" class=\"article\">\n<section class=\"article-content\">Na escola voc\u00ea aprendeu que a mat\u00e9ria pode ter tr\u00eas estados: s\u00f3lido, l\u00edquido e gasoso. Existe mais um que ocorre em condi\u00e7\u00f5es normais, o plasma. J\u00e1 nos laborat\u00f3rios, conseguimos criar mais alguns, o Bose-Einstein e o <i>tunneling<\/i>, este exclusivo do mundo qu\u00e2ntico, que cont\u00e9m as menores part\u00edculas existentes no Universo.<\/p>\n<p>S\u00f3 que, por anos, a ci\u00eancia tentou for\u00e7ar \u00e1tomos a assumir o estado de supers\u00f3lido. Primeiro, o material teria que ser superfluido \u2013 ou seja, um l\u00edquido de zero viscosidade. Se um suco tivesse essa propriedade, por exemplo, e voc\u00ea mexesse no copo com uma colher, ele continua girando eternamente, por causa da in\u00e9rcia e da falta de resist\u00eancia.<\/p>\n<p>J\u00e1 n\u00e3o s\u00e3o muitos l\u00edquidos que s\u00e3o superfluidos: um composto em estado s\u00f3lido que tamb\u00e9m tenha essa caracter\u00edstica n\u00e3o \u00e9 s\u00f3 dif\u00edcil de imaginar, mas tamb\u00e9m de colocar em pr\u00e1tica. Um copo de suco congelado que gira eternamente.<\/p>\n<p>E parece que conseguimos fazer isso pela primeira vez: n\u00e3o s\u00f3 em um experimento, mas em dois, em diferentes partes do mundo. Uma conquista foi realizada <a href=\"http:\/\/www.nature.com\/nature\/journal\/v543\/n7643\/full\/nature21431.html#affil-auth\" target=\"_blank\">no MIT<\/a> e a outra, com m\u00e9todos totalmente diferentes, <a href=\"http:\/\/www.nature.com\/nature\/journal\/v543\/n7643\/full\/nature21067.html\" target=\"_blank\">em Zurique<\/a>, na Su\u00ed\u00e7a.<\/p>\n<p>Os dois times come\u00e7aram j\u00e1 usando um composto no quinto estado da mat\u00e9ria, o de Bose-Einstein. Eles utilizaram uma amostra de rubidium e baixaram sua temperatura at\u00e9 ficar bem pr\u00f3xima do zero absoluto da Escala Kelvin, o mais frio poss\u00edvel no Universo. Virou um condensado de Bose-Einstein.<\/p>\n<p>Nesse estado, o frio \u00e9 tanto que os \u00e1tomos congelam e n\u00e3o conseguem mais se mexer. Eles acabam grudadinhos, como um \u00fanico super\u00e1tomo \u2013 mas mant\u00e9m a caracter\u00edstica de superfluidos. Por causa disso, \u00e9 um \u00f3timo ponto de partida para criar um supers\u00f3lido.<\/p>\n<p>Na Su\u00ed\u00e7a, os pesquisadores colocaram o condensado em c\u00e2meras de resson\u00e2ncia \u00f3ptica. Usaram lasers l\u00e1 dentro para moldar o super\u00e1tomo em uma estrutura de cristal, toda regular e r\u00edgida, indicando estado s\u00f3lido.<\/p>\n<p>No MIT, nos Estados Unidos, eles combinaram o laser a outros m\u00e9todos de congelamento para chegar ao condensado \u2013 e ao inv\u00e9s de rubidium, usaram \u00e1tomos de s\u00f3dio. Depois, tamb\u00e9m moldaram seu \u201c\u00e1tom\u00e3o\u201d de s\u00f3dio fluido criando uma diferen\u00e7a de densidade de \u00e1tomos em diferentes regi\u00f5es do condensado.<\/p>\n<p>Ainda falta verifica\u00e7\u00e3o independente para corroborar a conclus\u00e3o dos dois experimentos, mas o fato de que pesquisadores sem nenhuma liga\u00e7\u00e3o conseguiram resultados parecidos d\u00e1 for\u00e7a para as evid\u00eancias de que criamos os primeiros supers\u00f3lidos da hist\u00f3ria.<\/p>\n<p>Mas \u00e9 claro que o tema vai continuar gerando\u00a0pol\u00eamica \u2013 parte da comunidade cient\u00edfica n\u00e3o viu nenhum problema de m\u00e9todo, mas reclamou dos grupos terem usado condensados de Bose-Einstein em vez de h\u00e9lio, como foi proposto na teoria original dos supers\u00f3lidos dos anos 1970. Nobel de preciosismo.<\/p>\n<\/section>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Pesquisadores conseguiram colocar \u00e1tomos em um estado da mat\u00e9ria considerado imposs\u00edvel por 50 anos. Desde<\/p>\n","protected":false},"author":6,"featured_media":61136,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"uagb_featured_image_src":{"full":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia.jpg",415,265,false],"thumbnail":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia-150x150.jpg",150,150,true],"medium":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia-300x192.jpg",300,192,true],"medium_large":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia.jpg",415,265,false],"large":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia.jpg",415,265,false],"1536x1536":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia.jpg",415,265,false],"2048x2048":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia.jpg",415,265,false],"cream-magazine-thumbnail-2":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia.jpg",415,265,false],"cream-magazine-thumbnail-3":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia.jpg",415,265,false],"cream-magazine-thumbnail-4":["https:\/\/espacoecologico.com.br\/arquivo\/wp-content\/uploads\/2017\/03\/materia.jpg",415,265,false]},"uagb_author_info":{"display_name":"","author_link":"https:\/\/espacoecologico.com.br\/arquivo\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"Pesquisadores conseguiram colocar \u00e1tomos em um estado da mat\u00e9ria considerado imposs\u00edvel por 50 anos. 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