{"id":382422,"date":"2022-05-02T07:52:51","date_gmt":"2022-05-02T05:52:51","guid":{"rendered":"https:\/\/www.eenewseurope.com\/?p=382422"},"modified":"2022-05-02T07:52:51","modified_gmt":"2022-05-02T05:52:51","slug":"supraconducteur-unidirectionnel-ceci-est-une-revolution","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/supraconducteur-unidirectionnel-ceci-est-une-revolution\/","title":{"rendered":"Supraconducteur unidirectionnel: une r\u00e9volution !"},"content":{"rendered":"<p>Les supraconducteurs peuvent rendre l&rsquo;\u00e9lectronique des centaines de fois plus rapide, sans aucune perte d&rsquo;\u00e9nergie, donc moins \u00e9nergivore. Si le 20e si\u00e8cle a \u00e9t\u00e9 le si\u00e8cle des semiconducteurs, le 21e peut devenir celui du supraconducteur. Pour cela, il faut que comme dans les semiconducteurs les \u00e9lectrons, contr\u00f4l\u00e9s par le dopage du silicium, ne se d\u00e9placent que dans un sens. C\u2019est la base du fonctionnement de l\u2019\u00e9lectronique.<\/p>\n<p><strong>Question ; \u00bb Comment avez-vous r\u00e9ussi \u00e0 faire ce qui semblait initialement impossible ?\u00a0<\/strong><strong><br \/>\n<\/strong><strong>Mazhar Ali <\/strong><strong>:<\/strong> \u00ab C&rsquo;\u00e9tait vraiment le r\u00e9sultat d&rsquo;un des axes de recherche fondamentale de mon groupe. Dans ce que nous appelons \u00ab\u00a0Quantum Material Josephson Junctions\u00a0\u00bb (QMJJs), nous rempla\u00e7ons le mat\u00e9riau de barri\u00e8re classique dans les JJs par une barri\u00e8re de mat\u00e9riau quantique, o\u00f9 les propri\u00e9t\u00e9s intrins\u00e8ques du mat\u00e9riau quantique peuvent moduler le couplage entre les deux supraconducteurs de nouvelles mani\u00e8res. La diode Josephson en \u00e9tait un exemple : nous avons utilis\u00e9 le mat\u00e9riau quantique Nb3Br8, qui est un mat\u00e9riau 2D comme le graph\u00e8ne qui a \u00e9t\u00e9 modifi\u00e9 pour h\u00e9berger un dip\u00f4le \u00e9lectrique net, comme notre barri\u00e8re mat\u00e9rielle quantique\u00a0 et nous l&rsquo;avons plac\u00e9 entre deux supraconducteurs.<\/p>\n<p><a href=\"https:\/\/www.tudelft.nl\/en\/2022\/tnw\/discovery-of-the-one-way-superconductor-thought-to-be-impossible\">Retrouver la d\u00e9couverte de Mazhaar Ali <strong>de <\/strong><strong>l\u2019Universit\u00e9 de technologie de Delft<\/strong><\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le professeur associ\u00e9 Mazhar Ali et son groupe de recherche de l\u2019Universit\u00e9 de technologie de Delft, aux Pays-Bas ont r\u00e9ussi \u00e0 concevoir un supraconducteur qui ne laisse passer le courant que dans un sens, sans champs magn\u00e9tique, ce que l&rsquo;on pensait impossible depuis la d\u00e9couverte de la supraconductivit\u00e9 en 1911.<\/p>\n","protected":false},"author":11,"featured_media":382424,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[883],"tags":[],"domains":[47],"ppma_author":[1143],"class_list":["post-382422","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologies","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Supraconducteur unidirectionnel: une r\u00e9volution ! 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