{"id":30886,"date":"2018-10-04T10:49:29","date_gmt":"2018-10-04T08:49:29","guid":{"rendered":"https:\/\/www.olikrom.com\/?p=30886"},"modified":"2023-07-21T15:39:35","modified_gmt":"2023-07-21T13:39:35","slug":"article-cnrs-journal-pigments-olikrom-revelent-invisible","status":"publish","type":"post","link":"https:\/\/www.olikrom.com\/fr\/blog\/actualites\/article-cnrs-journal-pigments-olikrom-revelent-invisible\/","title":{"rendered":"Article CNRS Le journal : Les pigments d&rsquo;OliKrom r\u00e9v\u00e8lent l&rsquo;invisible"},"content":{"rendered":"<div id=\"pl-30886\"  class=\"panel-layout\" ><div id=\"pg-30886-0\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-30886-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-30886-0-0-0\" class=\"so-panel widget widget_sow-editor panel-first-child panel-last-child\" data-index=\"0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<h2 class=\"views-field-chapo\">Des mat\u00e9riaux qui changent de couleur sous l\u2019effet de chocs, de modification de pression ou de temp\u00e9rature : les pigments dits \u00ab intelligents \u00bb d\u00e9velopp\u00e9s par OliKrom constituent une belle avanc\u00e9e dans leur domaine<\/h2>\n<div class=\"views-field-contenu\">\n<p>Retour, avec son fondateur, sur l'\u00e9pop\u00e9e d'une jeune pousse. Imaginons donc. C\u2019est l\u2019hiver, vous prenez la route sous une pluie diluvienne mais avec assurance : gr\u00e2ce \u00e0 des pigments photoluminescents, le marquage au sol est optimis\u00e9, vous parvenez m\u00eame \u00e0 visualiser les risques de verglas. Des rev\u00eatements, des peintures, des encres capables de s\u2019adapter \u00e0 leur environnement ?<strong> La couleur comme d\u00e9tecteur : l\u2019id\u00e9e est au c\u0153ur des technologies d\u00e9velopp\u00e9es par la start-up OliKrom<\/strong>.<\/p>\n<p>\u00c0 la crois\u00e9e de la recherche fondamentale et de ses applications industrielles, OliKrom s\u2019inscrit dans le courant de la\u00a0<strong><em>deeptech<\/em>\u00a0: des innovations technologiques de rupture, souvent sorties des laboratoires de recherche fondamentale, susceptibles de r\u00e9volutionner leur march\u00e9 et d\u2019en ouvrir de nouveaux<\/strong>.<\/p>\n<p>\u00ab\u00a0<em>Nos pigments r\u00e9pondent \u00e0 des probl\u00e9matiques environnementales qui concernent des domaines tr\u00e8s vari\u00e9s, de l\u2019a\u00e9ronautique aux rev\u00eatements des b\u00e2timents en passant par les emballages alimentaires,\u00a0<\/em>explique Jean-Fran\u00e7ois L\u00e9tard, ancien directeur de recherche \u00e0 l\u2019Institut de Chimie de la Mati\u00e8re Condens\u00e9e de Bordeaux\u00a0(ICMCB)1, et fondateur de la start-up.\u00a0<em>La mission d\u2019OliKrom, c\u2019est de r\u00e9pondre \u00e0 ces probl\u00e9matiques, de la recherche \u00e0 la production, en d\u00e9veloppant encres et peintures sensibles aux modifications de leur environnement\u00a0et pr\u00eates \u00e0 l\u2019emploi<\/em>.\u00a0<em>\u00bb<\/em><\/p>\n<div class=\"asset-wrapper asset aid-4287 asset-image\">\n<div class=\"content asset-image-full\">\n<div class=\"image\">\n<div id=\"align\" class=\"wp-caption alignnone\"><\/div>\n<div id=\"align\" class=\"wp-caption alignnone\">\n<div class=\"views-field-contenu\">\n<p>&nbsp;<\/p>\n<p>En 2000, c\u2019est l\u2019aboutissement de travaux men\u00e9s \u00e0 l\u2019ICMCB depuis des ann\u00e9es : <strong style=\"font-size: 1em;\">les pigments \u00e0 changement de couleur sont enfin ma\u00eetris\u00e9s \u00e0 l\u2019\u00e9chelle du laboratoire<\/strong>. En 2005, Jean-Fran\u00e7ois L\u00e9tard et son \u00e9quipe d\u00e9posent un premier brevet international. Puis,\u00a0en 2013, Jean-Fran\u00e7ois L\u00e9tard suit le programme HEC Challenge<sup>+<\/sup>\u00a0 afin de se former aux pratiques de management et de l\u2019entreprenariat. En 2014, il d\u00e9cide de mettre sa carri\u00e8re de chercheur entre parenth\u00e8ses pour cr\u00e9er OliKrom, \u00e0 Pessac, dans l\u2019agglom\u00e9ration bordelaise.\u00a0<em style=\"font-size: 1em;\">\u00ab On imagine le chercheur plut\u00f4t pench\u00e9 sur sa paillasse qu\u2019en chef d\u2019entreprise. Mais un chercheur a plusieurs casquettes\u00a0 : il doit g\u00e9rer l\u2019inconnu, l\u2019incertitude. Tout comme un chef d\u2019entreprise, il doit g\u00e9n\u00e9rer de la motivation, donner une direction, une vision, une impulsion. \u00bb<\/em>\u00a0Et c\u2019est une direction prometteuse. <strong style=\"font-size: 1em;\">Apr\u00e8s une premi\u00e8re lev\u00e9e de fonds de 300 000 euros en d\u00e9cembre\u00a02014, Jean-Fran\u00e7ois L\u00e9tard effectue une deuxi\u00e8me lev\u00e9e de 4,5 millions d\u2019euros<\/strong> aupr\u00e8s de Starquest Capital et BPI France avec l\u2019appui du conseil r\u00e9gional de la Nouvelle-Aquitaine en d\u00e9cembre\u00a02017. Aujourd\u2019hui, OliKrom compte une \u00e9quipe de 14 personnes (docteurs, ing\u00e9nieurs\u2026) et <strong style=\"font-size: 1em;\">vient de franchir une nouvelle \u00e9tape avec l\u2019acquisition d\u2019un site industriel de plus de 1 600 m<sup>2<\/sup>\u00a0<\/strong>d\u00e9di\u00e9 \u00e0 son centre administratif, \u00e0 son bureau de recherche et d\u00e9veloppement et \u00e0 sa propre unit\u00e9 de production.<\/p>\n<p>En effet, de la paillasse \u00e0 l\u2019industrie, pour OliKrom tout est all\u00e9 tr\u00e8s vite. L\u2019entreprise <a href=\"https:\/\/www.olikrom.com\/fr\/blog\/actualites\/airbusgroup-olikrom-developpement-dune-peinture-piezokrom-securite-areonautique\/\">collabore avec Airbus<\/a> depuis pr\u00e8s de six ans \u00e0 travers Chococomp, un consortium qui regroupe des laboratoires (LCMCP, ICMCB, Institut P\u2019, ENSMA-P\u2019). \u00ab\u00a0<em>Notre mission,\u00a0<\/em>d\u00e9taille Jean-Fran\u00e7ois L\u00e9tard<em>, est de d\u00e9velopper des rev\u00eatements sensibles \u00e0 des stimuli ext\u00e9rieurs. Par exemple, lors du transport et de l\u2019assemblage des diff\u00e9rentes parties d\u2019un avion, des chocs peuvent se produire. Des chocs qui peuvent \u00eatre sous la surface ou \u00e0 peine visibles : leur d\u00e9tection n\u00e9cessite des inspections non n\u00e9gligeables. Nous avons donc d\u00e9velopp\u00e9 des pigments capables de rep\u00e9rer ces impacts sur les mat\u00e9riaux composites\u00a0: la couleur de la peinture change sous l\u2019effet d\u2019une variation de pression ou concomitamment \u00e0 un choc. Cela permet \u00e9galement de quantifier de fa\u00e7on pr\u00e9cise les dommages subis<\/em>. \u00bb<\/p>\n<\/div>\n<\/div>\n<div id=\"align\" class=\"wp-caption alignnone\">\n<div class=\"views-field-contenu\">\n<div class=\"asset-wrapper asset aid-4288 asset-image\">\n<div class=\"content asset-image-full\">\n<div class=\"image\">\n<div id=\"align\" class=\"wp-caption aligncenter\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"align\" class=\"wp-caption alignnone\">\n<div class=\"views-field-contenu\">\n<div class=\"asset-wrapper asset aid-4288 asset-image\">\n<div class=\"content asset-image-full\">\n<div class=\"image\">\n<div id=\"align\" class=\"wp-caption aligncenter\">\n<p id=\"caption-align\" class=\"wp-caption-text\">En parall\u00e8le, l\u2019\u00e9quipe d\u2019OliKrom d\u00e9veloppe des rev\u00eatements thermosensibles propres \u00e0 identifier des surchauffes \u2013 deux seuils d\u2019alerte, \u00e0 120\u00b0 et 140\u00b0, pour deux variations de couleur. Contr\u00f4ler le changement de couleur, r\u00e9versible ou non, en fonction de la <a style=\"font-size: 1em; background-color: #dedede;\" href=\"https:\/\/www.olikrom.com\/fr\/thermochromes\/\">temp\u00e9rature<\/a>, de la <a style=\"font-size: 1em; background-color: #dedede;\" href=\"https:\/\/www.olikrom.com\/fr\/piezochromes\/\">pression<\/a>, mais \u00e9galement en pr\u00e9sence de <a style=\"font-size: 1em; background-color: #dedede;\" href=\"https:\/\/www.olikrom.com\/fr\/chimiochromes\/\">gaz, de solvant<\/a> ou de <a style=\"font-size: 1em; background-color: #dedede;\" href=\"https:\/\/www.olikrom.com\/fr\/photochromes\/\">lumi\u00e8re<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>OliKrom est par ailleurs l\u2019un des quatre <a href=\"https:\/\/www.olikrom.com\/fr\/blog\/actualites\/eiffage-total-olikrom-ifsttar-declares-laureats-de-appel-a-projets-route-futur\/\">laur\u00e9ats du projet \u00ab\u00a0Route du futur\u00a0\u00bb<\/a>, lanc\u00e9 par l\u2019 Agence De l\u2019Environnement et de la Ma\u00eetrise de l\u2019Energie. Coordonn\u00e9 par le groupe Eiffage et en partenariat avec Total et IFSTTAR (l\u2019Institut Fran\u00e7ais des Sciences et Technologies des Transports, de l\u2019Am\u00e9nagement et des R\u00e9seaux), le programme I-Street (Innovations syst\u00e9miques au service des transitions \u00e9cologiques et \u00e9nerg\u00e9tiques dans les infrastructures routi\u00e8res de transport route \u00e0 \u00e9nergie positive) entend r\u00e9pondre \u00e0 cette question\u00a0: comment rendre la route du futur plus s\u00fbre, plus \u00e9cologique et connect\u00e9e\u00a0? \u00ab\u00a0<em>Le projet Sushis<\/em>,<em>\u00a0pour une route intelligente, comprend le d\u00e9veloppement de signalisations horizontales photoluminescentes, qui renforceront la s\u00e9curit\u00e9 des usagers en conditions m\u00e9t\u00e9o d\u00e9grad\u00e9es et permettront des \u00e9conomies d\u2019\u00e9nergie, plus particuli\u00e8rement en milieu urbain \u00bb,<\/em>\u00a0rapporte le chercheur-entrepreneur. Des\u00a0<a href=\"https:\/\/lejournal.cnrs.fr\/nos-blogs\/de-la-decouverte-a-linnovation\/les-pigments-dolikrom-revelent-linvisible#footnote2_4i0mimr\" target=\"_blank\" rel=\"noopener\">produits intelligents aux propri\u00e9t\u00e9s cam\u00e9l\u00e9ons<\/a>\u00a0: pour OliKrom, l\u2019aventure ne fait donc que commencer.<\/p>\n<\/div>\n<\/div>\n<div id=\"align\" class=\"wp-caption alignnone btn_orange\">\n<p><a href=\"https:\/\/lejournal.cnrs.fr\/nos-blogs\/de-la-decouverte-a-linnovation\/les-pigments-dolikrom-revelent-linvisible\" target=\"_blank\" rel=\"noopener\">Lien vers l\u2019article<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Des mat\u00e9riaux qui changent de couleur sous l\u2019effet de chocs, de modification de pression ou de temp\u00e9rature : les pigments dits \u00ab intelligents \u00bb d\u00e9velopp\u00e9s par OliKrom constituent une [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":30887,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[367],"tags":[],"class_list":["post-30886","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>CNRS Le journal : Les pigments d&#039;OliKrom r\u00e9v\u00e8lent l&#039;invisible<\/title>\n<meta name=\"description\" content=\"Des mat\u00e9riaux qui changent de couleur sous l\u2019effet de chocs, de modification de pression ou de temp\u00e9rature...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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