{"id":136442,"date":"2025-08-05T13:20:00","date_gmt":"2025-08-05T11:20:00","guid":{"rendered":"https:\/\/www.immo-invest.ch\/?p=136442"},"modified":"2025-08-05T13:11:34","modified_gmt":"2025-08-05T11:11:34","slug":"licht-steuert-elektrizitaet-in-metallen","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/licht-steuert-elektrizitaet-in-metallen\/","title":{"rendered":"La lumi\u00e8re contr\u00f4le l&rsquo;\u00e9lectricit\u00e9 dans les m\u00e9taux"},"content":{"rendered":"\n\n<p class=\"wp-block-paragraph\">Une \u00e9quipe de chercheurs de l&rsquo;Universit\u00e9 de Minnesota Twin Cities a r\u00e9alis\u00e9 une avanc\u00e9e majeure. Elle a mis au point une m\u00e9thode permettant d&rsquo;influencer le flux d&rsquo;\u00e9lectricit\u00e9 dans des couches m\u00e9talliques extr\u00eamement fines \u00e0 temp\u00e9rature ambiante \u00e0 l&rsquo;aide de la lumi\u00e8re. Cette nouvelle approche pourrait contribuer \u00e0 rendre les capteurs optiques et les dispositifs d&rsquo;information quantiques beaucoup plus efficaces \u00e0 l&rsquo;avenir. Les r\u00e9sultats interm\u00e9diaires des chercheurs ont \u00e9t\u00e9 publi\u00e9s dans la prestigieuse revue \u00ab\u00a0Science Advances\u00a0\u00bb.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">La base de l&rsquo;\u00e9tude repose sur des couches ultrafines de dioxyde de ruth\u00e9nium (RuO2) d\u00e9pos\u00e9es sur du dioxyde de titane (TiO2). Selon leur direction, ces couches r\u00e9agissent diff\u00e9remment non seulement \u00e0 la lumi\u00e8re, mais aussi au flux d&rsquo;\u00e9lectricit\u00e9. La structure de ces couches permet de contr\u00f4ler de mani\u00e8re cibl\u00e9e la dynamique des \u00e9lectrons et donc de r\u00e9guler les flux d&rsquo;\u00e9nergie.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>De nouvelles voies gr\u00e2ce \u00e0 l&rsquo;utilisation cibl\u00e9e de la lumi\u00e8re<br><\/strong>L&rsquo;un des principaux r\u00e9sultats obtenus par les chercheurs est que des modifications cibl\u00e9es de la structure atomique permettent d&rsquo;influencer avec pr\u00e9cision les r\u00e9actions du mat\u00e9riau \u00e0 la lumi\u00e8re. Cet effet contr\u00f4l\u00e9 se produit \u00e0 des temp\u00e9ratures ordinaires et ouvre des perspectives passionnantes pour des applications futures. \u00ab\u00a0C&rsquo;est la premi\u00e8re fois que quelqu&rsquo;un met en \u00e9vidence une relaxation ultra-rapide directionnelle et accordable des porteurs de charge dans un m\u00e9tal \u00e0 temp\u00e9rature ambiante\u00a0\u00bb, confirme Seunggyo Jeong, post-doctorant \u00e0 la facult\u00e9 de g\u00e9nie chimique et de science des mat\u00e9riaux de l&rsquo;universit\u00e9 du Minnesota.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">De telles d\u00e9couvertes remettent en question de nombreuses id\u00e9es re\u00e7ues sur le comportement des m\u00e9taux au cours des derni\u00e8res ann\u00e9es et d\u00e9montrent qu&rsquo;il est possible de cibler l&rsquo;\u00e9lectricit\u00e9 par des impulsions lumineuses contr\u00f4l\u00e9es. Cela ouvre la voie \u00e0 de nouvelles approches de la gestion de l&rsquo;\u00e9nergie et du traitement de l&rsquo;information dans un espace restreint.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Contr\u00f4ler l&rsquo;\u00e9lectricit\u00e9 en d\u00e9tail<br><\/strong>Jusqu&rsquo;\u00e0 pr\u00e9sent, le consensus en physique consid\u00e9rait que les m\u00e9taux n&rsquo;\u00e9taient pas adapt\u00e9s \u00e0 des m\u00e9canismes de contr\u00f4le aussi pr\u00e9cis, car ils poss\u00e8dent des propri\u00e9t\u00e9s \u00e9lectroniques trop complexes. L&rsquo;\u00e9quipe de recherche actuelle a cependant d\u00e9couvert que c&rsquo;est pr\u00e9cis\u00e9ment cette complexit\u00e9, appel\u00e9e entrelacement de bandes, qui peut \u00eatre activement utilis\u00e9e pour orienter la r\u00e9ponse ultrarapide des m\u00e9taux dans diff\u00e9rentes directions. Il en r\u00e9sulte que la propri\u00e9t\u00e9 du mat\u00e9riau \u00e0 contr\u00f4ler l&rsquo;\u00e9lectricit\u00e9 peut \u00eatre adapt\u00e9e en fonction de la situation.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">De nouvelles applications dans les domaines de l&rsquo;informatique, du stockage de donn\u00e9es, des capteurs et des communications pourraient en b\u00e9n\u00e9ficier massivement. L&rsquo;efficacit\u00e9 et la vitesse des composants pourraient notamment \u00eatre nettement am\u00e9lior\u00e9es par le contr\u00f4le cibl\u00e9 de l&rsquo;\u00e9lectricit\u00e9. Tony Low, co-auteur et professeur d&rsquo;ing\u00e9nierie \u00e9lectrique et informatique \u00e0 l&rsquo;universit\u00e9 du Minnesota, souligne que les r\u00e9sultats fournissent un aper\u00e7u profond de la fa\u00e7on dont de subtiles distorsions structurelles peuvent modifier la structure \u00e9lectronique des m\u00e9taux. Cela pourrait \u00eatre essentiel pour les futures technologies opto\u00e9lectroniques ultrarapides et sensibles \u00e0 la polarisation.<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>Des chercheurs de l&rsquo;Universit\u00e9 de Minnesota Twin Cities ont mis au point une m\u00e9thode permettant de contr\u00f4ler le flux d&rsquo;\u00e9lectricit\u00e9 dans des couches m\u00e9talliques ultrafines \u00e0 temp\u00e9rature ambiante \u00e0 l&rsquo;aide de la lumi\u00e8re. Cette d\u00e9couverte pourrait r\u00e9volutionner le d\u00e9veloppement de nouveaux dispositifs \u00e0 haut rendement dans les domaines de l&rsquo;opto\u00e9lectronique et de la technologie quantique.<\/p>\n","protected":false},"author":2,"featured_media":136437,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[8747,22353,743,8735,22438],"tags":[2600,872,3931,53869,53870,2002,53871,49507],"class_list":["post-136442","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-energie","category-international-fr","category-immonews-fr","category-proptech-fr","category-trends-fr","tag-forschung-fr","tag-immoinvest-fr","tag-immonews-fr","tag-lichtsteuerung-fr","tag-metalle-fr","tag-news-fr","tag-optoelektronik-fr","tag-quantentechnologie-fr"],"acf":{"bild_mit_ki_erstellt_worden":[],"lead":"Des chercheurs de l'Universit\u00e9 de Minnesota Twin Cities ont mis au point une m\u00e9thode permettant de contr\u00f4ler le flux d'\u00e9lectricit\u00e9 dans des couches m\u00e9talliques ultrafines \u00e0 temp\u00e9rature ambiante \u00e0 l'aide de la lumi\u00e8re. Cette d\u00e9couverte pourrait r\u00e9volutionner le d\u00e9veloppement de nouveaux dispositifs \u00e0 haut rendement dans les domaines de l'opto\u00e9lectronique et de la technologie quantique.","autor":"Quelle Ingenieur","ort":"","bildunterschrift":"","zusammenfassung":"","bild_im_grid":false,"gallerie":"","newsim":""},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Des chercheurs de l&#039;Universit\u00e9 de Minnesota Twin Cities ont mis au point une m\u00e9thode permettant de contr\u00f4ler le flux d&#039;\u00e9lectricit\u00e9 dans des couches m\u00e9talliques ultrafines \u00e0 temp\u00e9rature ambiante \u00e0 l&#039;aide de la lumi\u00e8re. Cette d\u00e9couverte pourrait r\u00e9volutionner le d\u00e9veloppement de nouveaux dispositifs \u00e0 haut rendement dans les domaines de l&#039;opto\u00e9lectronique et de la technologie quantique.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"immovestuser\"\/>\n\t<meta name=\"google-site-verification\" content=\"fHJKvgWpZCR2zVBHWfkQeFXC11qieUSff0HGNYfuyLA\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.immo-invest.ch\/fr\/licht-steuert-elektrizitaet-in-metallen\/\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"fr_FR\" \/>\n\t\t<meta property=\"og:site_name\" content=\"immo!nvest - Die Plattform f\u00fcr Standorte und Immobilien - Die\u00a0Plattform f\u00fcr Standorte und Immobilien\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"La lumi\u00e8re contr\u00f4le l\u2019\u00e9lectricit\u00e9 dans les m\u00e9taux - immo!nvest - Die Plattform f\u00fcr Standorte und Immobilien\" \/>\n\t\t<meta property=\"og:description\" content=\"Des chercheurs de l&#039;Universit\u00e9 de Minnesota Twin Cities ont mis au point une m\u00e9thode permettant de contr\u00f4ler le flux d&#039;\u00e9lectricit\u00e9 dans des couches m\u00e9talliques ultrafines \u00e0 temp\u00e9rature ambiante \u00e0 l&#039;aide de la lumi\u00e8re. 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