{"id":24951,"date":"2018-09-20T15:49:16","date_gmt":"2018-09-20T13:49:16","guid":{"rendered":"https:\/\/www.iemn.fr\/?page_id=24951"},"modified":"2024-07-04T16:35:19","modified_gmt":"2024-07-04T14:35:19","slug":"thematiques","status":"publish","type":"page","link":"https:\/\/www.iemn.fr\/en\/la-recherche\/les-groupes\/mitec\/thematiques","title":{"rendered":"Themes"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_submenu  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_41_5ra8ngnscca0\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"bgposition:50% 50%;duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/10\/sliders_groupe_mitec.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/10\/sliders_groupe_mitec.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/10\/sliders_groupe_mitec-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/10\/sliders_groupe_mitec-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/10\/sliders_groupe_mitec-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/10\/sliders_groupe_mitec-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/10\/sliders_groupe_mitec-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;background-position:0% 0%;background-repeat:no-repeat;mix-blend-mode:normal;top:231px;left:0px;height:30px;width:360px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-user-circle\" style=\"color:#f2f2f2;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>GROUPE DE RECHERCHE : MITEC<\/ls-layer><\/div><\/div><\/div>\n<div id='sub_menu1'  class='av-submenu-container av-jrqfadqy-ce2f2ab09b07c9cd48b0b2cdd423b7d9 footer_color  avia-builder-el-1  el_after_av_layerslider  el_before_av_heading  submenu-not-first container_wrap sidebar_right' style='z-index:301' ><div class='container av-menu-mobile-disabled av-submenu-pos-left'><ul id='av-custom-submenu-1' class='av-subnav-menu' role='menu'>\n<li class='menu-item av-1xztkqw-9d84057ccfa69edbbdca1ec7424830bd menu-item-top-level menu-item-top-level-1' role='menuitem'><a href='https:\/\/www.iemn.fr\/en\/la-recherche\/les-groupes\/mitec'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Introduction<\/span><\/a><\/li>\n<li class='menu-item av-spn6l3-6d7b874c63ff864c4ddcd2ba5cf30f9d menu-item-top-level menu-item-top-level-2' role='menuitem'><a href='https:\/\/www.iemn.fr\/en\/la-recherche\/les-groupes\/mitec\/membres'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Membres<\/span><\/a><\/li>\n<li class='menu-item av-u2agmg-836e15f5b28b0a4304e82eb8daaf2e0a menu-item-top-level menu-item-top-level-3' role='menuitem'><a href='https:\/\/www.iemn.fr\/en\/la-recherche\/les-groupes\/mitec\/thematiques'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Th\u00e9matiques<\/span><\/a><\/li>\n<li class='menu-item av-11i7cxj-bf33beea051a6b87d78406ee5a634ddb menu-item-top-level menu-item-top-level-4' role='menuitem'><a href='https:\/\/www.iemn.fr\/en\/la-recherche\/les-groupes'  ><span class='avia-bullet'><\/span><span class='avia-menu-text'>Autres groupes<\/span><\/a><\/li>\n<\/ul><\/div><\/div><div id='after_submenu_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-24951'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ioo2if-a0e37ed210d6217be6fb992d919c96dc\">\n#top .av-special-heading.av-ioo2if-a0e37ed210d6217be6fb992d919c96dc{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-ioo2if-a0e37ed210d6217be6fb992d919c96dc .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-ioo2if-a0e37ed210d6217be6fb992d919c96dc .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-ioo2if-a0e37ed210d6217be6fb992d919c96dc av-special-heading-h2  avia-builder-el-2  el_after_av_submenu  el_before_av_one_full  avia-builder-el-first '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >Les Activit\u00e9s de Recherche du groupe MITEC<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1wk2ud3-0ad132a816d64388ed70eaa80b327c81\">\n.flex_column.av-1wk2ud3-0ad132a816d64388ed70eaa80b327c81{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1wk2ud3-0ad132a816d64388ed70eaa80b327c81 av_one_full  avia-builder-el-3  el_after_av_heading  avia-builder-el-last  first flex_column_div av-zero-column-padding  '     ><p><section  class='av_textblock_section av-jmamxuwv-70d87ebbf034c369257443325f138a25 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Les activit\u00e9s de recherche au sein du groupe MITEC se d\u00e9clinent en\u00a0plusieurs th\u00e8mes:<\/strong><\/p>\n<\/div><\/section><br \/>\n<div  class='togglecontainer av-1txamuv-f4c2525948be4f563d2d44b56ed80fe6  avia-builder-el-5  el_after_av_textblock  avia-builder-el-last  toggle_close_all' >\n<section class='av_toggle_section av-ikdqyf-89b9586dafb005a1a2e8c7c10beb2ae8'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-1' data-fake-id='#toggle-id-1' class='toggler  av-title-above '  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-1' data-slide-speed=\"200\" data-title=\"Mesure de la permittivit\u00e9 di\u00e9lectrique complexe de mat\u00e9riaux.\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: Mesure de la permittivit\u00e9 di\u00e9lectrique complexe de mat\u00e9riaux.\" data-aria_expanded=\"Click to collapse: Mesure de la permittivit\u00e9 di\u00e9lectrique complexe de mat\u00e9riaux.\">Mesure de la permittivit\u00e9 di\u00e9lectrique complexe de mat\u00e9riaux.<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-1' aria-labelledby='toggle-toggle-id-1' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color '  itemprop=\"text\" ><p>La connaissance des propri\u00e9t\u00e9s \u00e9lectromagn\u00e9tiques des mat\u00e9riaux est n\u00e9cessaire dans de nombreux domaines d\u2019applications. Le groupe MITEC d\u00e9veloppe des techniques de caract\u00e9risation adapt\u00e9es \u00e0 un large \u00e9ventail de mat\u00e9riaux (solides, liquides, en couches minces, bio-sourc\u00e9s\u2026.). Quelques exemples d\u2019illustration sont donn\u00e9s ci-dessous.<\/p>\n<blockquote>\n<p>Mesure par guide d\u2019onde<\/p>\n<\/blockquote>\n<p>Dans le domaine des longueurs d\u2019ondes centim\u00e9triques et millim\u00e9triques, il existe de nombreuses m\u00e9thodes de caract\u00e9risation de mat\u00e9riaux di\u00e9lectriques. Celles-ci se distinguent par diff\u00e9rents param\u00e8tres tels que la fr\u00e9quence de mesure, les dimensions et la nature de l\u2019\u00e9chantillon (solide, liquide, gazeux), le niveau des pertes di\u00e9lectriques de l\u2019\u00e9chantillon, le caract\u00e8re destructif ou non destructif de la technique de mesure, l\u2019aspect contact ou sans contact de la mesure et la plage de temp\u00e9rature. La technique du guide fendu est une des m\u00e9thodes que nous exploitons. La permittivit\u00e9 est alors extraite \u00e0 partir des param\u00e8tres S mesur\u00e9s en transmission et en r\u00e9flexion \u00e0 l\u2019aide d\u2019un mod\u00e8le d\u2019inversion. Des \u00e9tudes en simulation qui utilisent le logiciel HFSS sont \u00e9galement men\u00e9es en support.<\/p>\n<p><div id=\"attachment_66030\" style=\"width: 664px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-66030\" class=\"wp-image-66030 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-5.jpg\" alt=\"\" width=\"654\" height=\"199\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-5.jpg 654w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-5-300x91.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-5-18x5.jpg 18w\" sizes=\"auto, (max-width: 654px) 100vw, 654px\" \/><p id=\"caption-attachment-66030\" class=\"wp-caption-text\">Exemple de caract\u00e9risation dans la bande 8-12 GHz &amp; Simulation HFSS<\/p><\/div><br \/>\n<div id=\"attachment_67710\" style=\"width: 1238px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-67710\" class=\"wp-image-67710 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/07\/Sans-titre2-1.jpg\" alt=\"\" width=\"1228\" height=\"316\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/07\/Sans-titre2-1.jpg 1228w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/07\/Sans-titre2-1-300x77.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/07\/Sans-titre2-1-1030x265.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/07\/Sans-titre2-1-768x198.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/07\/Sans-titre2-1-18x5.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/07\/Sans-titre2-1-705x181.jpg 705w\" sizes=\"auto, (max-width: 1228px) 100vw, 1228px\" \/><p id=\"caption-attachment-67710\" class=\"wp-caption-text\">Comparaison th\u00e9orie\/exp\u00e9rience pour S<sub>21<\/sub> pour un guide d&rsquo;ondes fonctionnant en bande X et une fente de 2.6 mm Comparaison effectu\u00e9e pour un \u00e9chantillon de t\u00e9flon (142mm x 32mm x 0.5mm).<\/p><\/div><\/p>\n<blockquote>\n<p>Mesure par lignes coplanaires<\/p>\n<\/blockquote>\n<p>Pour cette m\u00e9thode, les grandeurs mesur\u00e9es sont les param\u00e8tres de la matrice [S] de lignes CPW. Ces mesures sont effectu\u00e9es \u00e0 l&rsquo;aide d&rsquo;un analyseur vectoriel, connect\u00e9 \u00e0 une station de mesure sous pointes. Les mesures des param\u00e8tres [S] nous permettent de calculer ensuite la constante de propagation complexe \u03b3 = \u03b1 +j\u03b2 pour les lignes r\u00e9alis\u00e9es, o\u00f9\u00a0 \u03b1 est la constante d\u2019att\u00e9nuation (Np\/m) et \u03b2 la constante de phase (Rad\/m).\u00a0Le calcul de \u03b3 n\u00e9cessite la mesure des param\u00e8tres [S] pour deux lignes de transmission de m\u00eame dimensions transversales (donc de m\u00eame imp\u00e9dance caract\u00e9ristique) mais de longueur diff\u00e9rente.<\/p>\n<p>Exemple: Caract\u00e9risation di\u00e9lectrique du laurate de cellulose.<\/p>\n<p><div id=\"attachment_65683\" style=\"width: 604px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-65683\" class=\"wp-image-65683 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb.jpg\" alt=\"\" width=\"594\" height=\"191\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb.jpg 594w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-300x96.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-18x6.jpg 18w\" sizes=\"auto, (max-width: 594px) 100vw, 594px\" \/><p id=\"caption-attachment-65683\" class=\"wp-caption-text\">Synoptique de la m\u00e9thode, exemple de lignes r\u00e9alis\u00e9es, mesures sous pointes<\/p><\/div><br \/>\n<div id=\"attachment_65698\" style=\"width: 598px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-65698\" class=\"wp-image-65698 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-1.jpg\" alt=\"\" width=\"588\" height=\"183\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-1.jpg 588w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-1-300x93.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-1-18x6.jpg 18w\" sizes=\"auto, (max-width: 588px) 100vw, 588px\" \/><p id=\"caption-attachment-65698\" class=\"wp-caption-text\">R\u00e9sulats obtenus pour le laurate de cellulose<\/p><\/div><\/p>\n<\/div><\/div><\/div><\/section>\n<section class='av_toggle_section av-b373r-de5ef9e8e887563fa0ed3534c5d2460b'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-2' data-fake-id='#toggle-id-2' class='toggler  av-title-above '  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-2' data-slide-speed=\"200\" data-title=\"Mesure de la conductivit\u00e9 thermique de mat\u00e9riaux.\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: Mesure de la conductivit\u00e9 thermique de mat\u00e9riaux.\" data-aria_expanded=\"Click to collapse: Mesure de la conductivit\u00e9 thermique de mat\u00e9riaux.\">Mesure de la conductivit\u00e9 thermique de mat\u00e9riaux.<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-2' aria-labelledby='toggle-toggle-id-2' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color '  itemprop=\"text\" ><p>La m\u00e9thode 3\u03c9, apparue dans les ann\u00e9es 90, est une m\u00e9thode \u00e9lectro-thermique permettant la mesure de la conductivit\u00e9 thermique de substrats ou de films minces d\u00e9pos\u00e9s sur des substrats. Un \u00e9l\u00e9ment thermo-r\u00e9sistif m\u00e9tallique est d\u00e9pos\u00e9 sur la surface de l\u2019\u00e9chantillon et un courant harmonique (\u03c9) est appliqu\u00e9. L\u2019effet Joule, en I\u00b2 induit une \u00e9l\u00e9vation locale de la temp\u00e9rature de l&rsquo;\u00e9l\u00e9ment m\u00e9tallique \u00e0 la fr\u00e9quence 2\u03c9.<\/p>\n<p>La r\u00e9sistivit\u00e9 du m\u00e9tal utilis\u00e9 \u00e9tant li\u00e9e \u00e0 la temp\u00e9rature (coefficient a de l\u2019ordre de 10<sup>-3<\/sup>K<sup>-1<\/sup>), la tension mesur\u00e9e contient une composante modul\u00e9e \u00e0 la fr\u00e9quence 3\u03c9. Cette composante, amplifi\u00e9e et mesur\u00e9e par une d\u00e9tection synchrone permet de d\u00e9terminer l\u2019\u00e9l\u00e9vation de temp\u00e9rature de cet \u00e9l\u00e9ment, qui est inversement proportionnelle \u00e0 la conductivit\u00e9 thermique du substrat.<a href=\"#_ftnref1\" name=\"_ftn1\"><\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-65660 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive1.jpg\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive1.jpg 1280w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive1-300x169.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive1-1030x579.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive1-768x432.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive1-18x10.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive1-705x397.jpg 705w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<ul>\n<li>Pour r\u00e9aliser un banc de mesure 3-Om\u00e9ga, il est n\u00e9cessaire d\u2019assembler diff\u00e9rents \u00e9l\u00e9ments tels qu\u2019un amplificateur \u00e0 d\u00e9tection synchrone, des micro-positionneurs, un micro-ohmm\u00e8tre, un g\u00e9n\u00e9rateur de courant. Une carte d&rsquo;acquisition \u00e0 base d&rsquo;amplificateurs diff\u00e9rentiels a aussi \u00e9t\u00e9 fabriqu\u00e9e. Cette derni\u00e8re r\u00e9alise le pr\u00e9l\u00e8vement des signaux pr\u00e9sents sur la ligne m\u00e9tallique et les envoie aux entr\u00e9es de l&rsquo;amplificateur \u00e0 d\u00e9tection synchrone.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-65664 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive2.jpg\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive2.jpg 1280w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive2-300x169.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive2-1030x579.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive2-768x432.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive2-18x10.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Diapositive2-705x397.jpg 705w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<ul>\n<li>Les valeurs de conductivit\u00e9s thermiques sont obtenues par des m\u00e9thodes de simulation inverses d\u00e9velopp\u00e9es sur MATLAB<sup>\u00a9 <\/sup>(m\u00e9thodes analytiques) ou sur COMSOL<sup>\u00a9 <\/sup>(m\u00e9thodes num\u00e9riques).<\/li>\n<\/ul>\n<div id=\"attachment_67541\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-67541\" class=\"wp-image-67541 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/07\/animation_mitec2.gif\" alt=\"\" width=\"400\" height=\"300\" \/><p id=\"caption-attachment-67541\" class=\"wp-caption-text\">Exemple d&rsquo;oscillations de temp\u00e9ratures obtenues pour une ligne d\u00e9pos\u00e9e sur un polym\u00e8re biosourc\u00e9.<\/p><\/div>\n<\/div><\/div><\/div><\/section>\n<section class='av_toggle_section av-sj5k3b-eb6e543ebdb4765a79b87eb9aa0d0f10'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-3' data-fake-id='#toggle-id-3' class='toggler  av-title-above '  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-3' data-slide-speed=\"200\" data-title=\"Dispositifs RF sur substrats flexibles.\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: Dispositifs RF sur substrats flexibles.\" data-aria_expanded=\"Click to collapse: Dispositifs RF sur substrats flexibles.\">Dispositifs RF sur substrats flexibles.<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-3' aria-labelledby='toggle-toggle-id-3' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color '  itemprop=\"text\" ><p>De nombreuses applications se d\u00e9veloppent autour des communications sans fil, en particulier pour l\u2019IoT. Aussi, il est n\u00e9cessaire de d\u00e9velopper des solutions capables de s\u2019adapter \u00e0 de nouvelles contraintes, telles que la flexibilit\u00e9 ou encore la frugalit\u00e9 \u00e9nerg\u00e9tique. Le groupe MITEC d\u00e9veloppe des dispositifs sur substrat flexibles en r\u00e9ponse \u00e0 cette probl\u00e9matique. De plus une attention particuli\u00e8re est apport\u00e9e au d\u00e9veloppement de dispositifs \u00e0 faibles impacts environnementaux.<\/p>\n<blockquote>\n<p>R\u00e9alisation d&rsquo;un filtre passe-bande flexible \u00e0 2.45 GHz sur laurate de cellulose<\/p>\n<\/blockquote>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-66042\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-6.jpg\" alt=\"\" width=\"669\" height=\"501\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-6.jpg 669w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-6-300x225.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-6-16x12.jpg 16w\" sizes=\"auto, (max-width: 669px) 100vw, 669px\" \/><\/p>\n<blockquote>\n<p>R\u00e9alisation d&rsquo;une antenne bi-bande flexible sur laurate de cellulose pour des applications WBAN.<\/p>\n<\/blockquote>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-66047\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-7.jpg\" alt=\"\" width=\"478\" height=\"249\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-7.jpg 478w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-7-300x156.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-7-18x9.jpg 18w\" sizes=\"auto, (max-width: 478px) 100vw, 478px\" \/><\/p>\n<blockquote>\n<p>R\u00e9alisation d&rsquo;une rectenna sur laurate de cellulose<\/p>\n<\/blockquote>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-66052\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-8.jpg\" alt=\"\" width=\"582\" height=\"493\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-8.jpg 582w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-8-300x254.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2024\/06\/Sans-titreweb-8-14x12.jpg 14w\" sizes=\"auto, (max-width: 582px) 100vw, 582px\" \/><\/p>\n<\/div><\/div><\/div><\/section>\n<\/div><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"parent":17138,"menu_order":15,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_members_access_role":[],"_members_access_error":""},"class_list":["post-24951","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages\/24951","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=24951"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages\/24951\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages\/17138"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=24951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}