{"id":8974,"date":"2023-04-20T09:25:44","date_gmt":"2023-04-20T07:25:44","guid":{"rendered":"https:\/\/fermi.univ-tlse3.fr\/?post_type=tribe_events&#038;p=8974"},"modified":"2023-04-20T15:08:29","modified_gmt":"2023-04-20T13:08:29","slug":"la-matiere-active-dans-tous-ses-etats-cecile-cottin-bizonne-seminar-sfp-21-04-2023-11h","status":"publish","type":"tribe_events","link":"https:\/\/fermi.univ-tlse3.fr\/fr\/home\/event\/la-matiere-active-dans-tous-ses-etats-cecile-cottin-bizonne-seminar-sfp-21-04-2023-11h\/","title":{"rendered":"La mati\u00e8re active dans tous ses \u00e9tats. &#8211; (C\u00e9cile Cottin-Bizonne \/ Seminar\/ SFP). &#8211; 21\/04\/2023, 11H"},"content":{"rendered":"<p><span style=\"font-size: 20px; color: #191970;\"><b><span style=\"font-size: large;\">C\u00e9cile Cottin-Bizonne <\/span> <\/b><\/span>(Institut Lumi\u00e8re Mati\u00e8re, Universit\u00e9 Claude Bernard, Lyon 1)<\/p>\n<p><strong><span style=\"font-size: 20px;\">Lieu :<\/span> <span style=\"color: #191970;\">Salle de conf\u00e9rence, nouveau B\u00e2timent 3R4<\/span><\/strong><\/p>\n<p><span style=\"font-size: 20px;\"><strong>R\u00e9sum\u00e9 :<\/strong><\/span><br \/>\nIl est fascinant d\u2019observer les vol\u00e9es d\u2019oiseaux, les bancs de poissons et les essaims d\u2019abeilles, qui sont des exemples remarquables de comportements collectifs dans la nature. Les physiciens se sont int\u00e9ress\u00e9s \u00e0 la compr\u00e9hension et \u00e0 la description des propri\u00e9t\u00e9s dynamiques de ces syst\u00e8mes. Cela a conduit \u00e0 l\u2019\u00e9mergence de la physique de la mati\u00e8re active, une mati\u00e8re constitu\u00e9e non pas d&rsquo;atomes et de mol\u00e9cules, mais d&rsquo;entit\u00e9s qui consomment de l&rsquo;\u00e9nergie pour g\u00e9n\u00e9rer leur propre mouvement. Ces derni\u00e8res ann\u00e9es la ma\u00eetrise des propri\u00e9t\u00e9s interfaciales d\u2019objets microm\u00e9triques, a permis de motoriser des microparticules. Ces syst\u00e8mes ont donn\u00e9 lieu \u00e0 autant de ph\u00e9nom\u00e8nes spectaculaires que de questions fondamentales encore ouvertes. Dans cette pr\u00e9sentation, nous d\u00e9crirons certains comportements originaux de ces particules microm\u00e9triques autopropuls\u00e9es. Alors qu\u2019\u00e0 faible densit\u00e9, elles se comportent comme un gaz chaud parfait, \u00e0 des densit\u00e9s interm\u00e9diaires, nous avons observ\u00e9 et caract\u00e9ris\u00e9 un nouveau ph\u00e9nom\u00e8ne collectif : la formation d&rsquo;amas. Dans le r\u00e9gime dense, nous avons observ\u00e9 un comportement tout \u00e0 fait inattendu qui ne peut \u00eatre d\u00e9crit par la thermodynamique classique. Nous terminerons par une br\u00e8ve pr\u00e9sentation de nos \u00e9tudes sur la dynamique de nageurs interfaciaux, des objets autopropuls\u00e9s situ\u00e9s entre deux phases fluides, et plus particuli\u00e8rement sur le mouvement spontan\u00e9 de particules de camphre \u00e0 une interface liquide-gaz.<\/p>\n<p>En savoir plus, voir <a href=\"https:\/\/www.sfpnet.fr\/conference-la-matiere-active-dans-tous-ses-etats-a-toulouse\"><strong>ici<\/strong><\/a><\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<p class=\"western\"><code class=\"western\"><span style=\"font-family: Leelawadee UI, sans-serif;\"><div class=\"leaflet-map WPLeafletMap\" style=\"height:300px; width:80%;\"><\/div><script>\nwindow.WPLeafletMapPlugin = window.WPLeafletMapPlugin || [];\nwindow.WPLeafletMapPlugin.push(function WPLeafletMapShortcode() {\/*<script>*\/\nvar baseUrl = atob('aHR0cHM6Ly97c30udGlsZS5vcGVuc3RyZWV0bWFwLm9yZy97en0ve3h9L3t5fS5wbmc=');\nvar base = (!baseUrl && window.MQ) ?\n    window.MQ.mapLayer() : L.tileLayer(baseUrl,\n        L.Util.extend({}, {\n            detectRetina: 0,\n        },\n        {\"subdomains\":\"abc\",\"noWrap\":false,\"maxZoom\":18}        )\n    );\n    var options = L.Util.extend({}, {\n        layers: [base],\n        attributionControl: false\n    },\n    {\"zoomControl\":true,\"scrollWheelZoom\":true,\"doubleClickZoom\":true,\"fitBounds\":true,\"minZoom\":9,\"maxZoom\":18,\"maxBounds\":null,\"attribution\":\"<a href=\\\"http:\\\/\\\/leafletjs.com\\\" title=\\\"Une biblioth\\u00e8que JS pour des cartes interactives\\\">Leaflet<\\\/a>; 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(C\u00e9cile Cottin-Bizonne \/ Seminar\/ SFP). &#8211; 21\/04\/2023, 11H<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_tribe_events_status":"","_tribe_events_status_reason":"","footnotes":""},"tags":[],"tribe_events_cat":[48,233,315],"class_list":["post-8974","tribe_events","type-tribe_events","status-publish","hentry","tribe_events_cat-events","tribe_events_cat-seminars","tribe_events_cat-sfp-sfc","cat_events","cat_seminars","cat_sfp-sfc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La mati\u00e8re active dans tous ses \u00e9tats. - (C\u00e9cile Cottin-Bizonne \/ Seminar\/ SFP). - 21\/04\/2023, 11H - FeRMI<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fermi.univ-tlse3.fr\/fr\/home\/event\/la-matiere-active-dans-tous-ses-etats-cecile-cottin-bizonne-seminar-sfp-21-04-2023-11h\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La mati\u00e8re active dans tous ses \u00e9tats. - (C\u00e9cile Cottin-Bizonne \/ Seminar\/ SFP). - 21\/04\/2023, 11H - FeRMI\" \/>\n<meta property=\"og:description\" content=\"C\u00e9cile Cottin-Bizonne (Institut Lumi\u00e8re Mati\u00e8re, Universit\u00e9 Claude Bernard, Lyon 1) Lieu : Salle de conf\u00e9rence, nouveau B\u00e2timent 3R4 R\u00e9sum\u00e9 : Il est fascinant d\u2019observer les vol\u00e9es d\u2019oiseaux, les bancs de&hellip;&nbsp;Lire la suite &raquo;La mati\u00e8re active dans tous ses \u00e9tats. &#8211; 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