{"id":794,"date":"2026-03-12T17:26:30","date_gmt":"2026-03-12T16:26:30","guid":{"rendered":"https:\/\/biotechlerncenter.iph-multisite.berta-bewegt.ch\/?page_id=794"},"modified":"2026-03-13T17:38:10","modified_gmt":"2026-03-13T16:38:10","slug":"3-microscope-regards-dans-le-monde-du-tout-petit","status":"publish","type":"page","link":"https:\/\/biotechlerncenter.interpharma.ch\/fr\/sujets\/nanomedecine\/3-microscope-regards-dans-le-monde-du-tout-petit\/","title":{"rendered":"3. Microscope: regards dans le monde du tout petit"},"content":{"rendered":"\n<p>Pour jeter un coup d&rsquo;\u0153il dans le monde du nanom\u00e8tre, nous avons besoin de microscopes sp\u00e9ciaux,&nbsp; le microscope \u00e9lectronique ou le microscope \u00e0 force atomique, par exemple. Le microscope optique peut, dans le meilleur des cas, avoir un pouvoir de r\u00e9solution de 0,2 microm\u00e8tre. Par contre, les microscopes \u00e9lectroniques peuvent repr\u00e9senter des objets beaucoup plus petits: ils fonctionnent \u00e0 l&rsquo;aide du rayonnement \u00e9lectronique et les \u00e9lectrons ont une longueur d&rsquo;onde plus petite que la lumi\u00e8re. Le microscope \u00e0 force atomique peut projeter des objets encore bien plus petits: une minuscule pointe d&rsquo;aiguille fix\u00e9e \u00e0 un support va permettre de visualiser la surface \u00e0 analyser et d&rsquo;en reconstituer son relief. Le microscope \u00e0 force atomique va permettre de visualiser les atomes isol\u00e9ment et m\u00eame de les \u00ab\u00a0balloter\u00a0\u00bb d&rsquo;un c\u00f4t\u00e9 \u00e0 l&rsquo;autre.&nbsp; A l&rsquo;origine, seuls les physiciens utilisaient ce microscope mais depuis, les m\u00e9decins s&rsquo;int\u00e9ressent de plus en plus \u00e0 cet instrument prodigieux.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"http:\/\/biotechlerncenter.interpharma.ch\/wp-content\/uploads\/sites\/4\/2020\/01\/zellen_fotolia_900.jpg\" alt=\"\" class=\"wp-image-3611\"\/><figcaption>Cellules sous un microscope \u00e9lectronique<br>\u00a9 Gunnar Assmy, Fotolia.com<\/figcaption><\/figure>\n\n\n\n<div class=\"wp-block-group has-my-grey-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\"><strong>Nano: son action est connue depuis longtemps<\/strong><\/h2>\n\n\n\n<p>Le nano n&rsquo;est pas nouveau. Les effets de certaines nanoparticules sont connus depuis fort longtemps. Prenons l&rsquo;exemple de l&rsquo;argent collo\u00efdal mentionn\u00e9 en 1889 d\u00e9j\u00e0: il s&rsquo;agit de particules d&rsquo;argent extr\u00eamement fines dont le diam\u00e8tre mesure entre sept et neuf nanom\u00e8tres et qui sont mises en solution. Les particules seront utilis\u00e9es dans la destruction des bact\u00e9ries ou de celle des algues dans les piscines (algicides). La nouveaut\u00e9 r\u00e9side dans la cr\u00e9ation d&rsquo;instruments qui vont offrir un aper\u00e7u du monde des \u00ab\u00a0nanos\u00a0\u00bb et de ce fait, vont modifier certaines mol\u00e9cules et en former de nouvelles combinaisons.<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Pour jeter un coup d&rsquo;\u0153il dans le monde du nanom\u00e8tre, nous avons besoin de microscopes sp\u00e9ciaux,&nbsp; le microscope \u00e9lectronique ou le microscope \u00e0 force atomique, par exemple. Le microscope optique peut, dans le meilleur des cas, avoir un pouvoir de r\u00e9solution de 0,2 microm\u00e8tre. Par contre, les microscopes \u00e9lectroniques peuvent repr\u00e9senter des objets beaucoup plus [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":826,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"page-templates\/unterthema.php","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-794","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>3. Microscope: regards dans le monde du tout petit - biotechlerncenter<\/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:\/\/biotechlerncenter.interpharma.ch\/themen\/nanomedizin\/3-mikroskop-blick-in-die-kleinsten-welten\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"3. Microscope: regards dans le monde du tout petit\" \/>\n<meta property=\"og:description\" content=\"Pour jeter un coup d&rsquo;\u0153il dans le monde du nanom\u00e8tre, nous avons besoin de microscopes sp\u00e9ciaux,&nbsp; le microscope \u00e9lectronique ou le microscope \u00e0 force atomique, par exemple. Le microscope optique peut, dans le meilleur des cas, avoir un pouvoir de r\u00e9solution de 0,2 microm\u00e8tre. Par contre, les microscopes \u00e9lectroniques peuvent repr\u00e9senter des objets beaucoup plus [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/biotechlerncenter.interpharma.ch\/themen\/nanomedizin\/3-mikroskop-blick-in-die-kleinsten-welten\/\" \/>\n<meta property=\"og:site_name\" content=\"biotechlerncenter\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-13T16:38:10+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/biotechlerncenter.interpharma.ch\/wp-content\/uploads\/sites\/4\/2020\/01\/zellen_fotolia_900.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/biotechlerncenter.interpharma.ch\/themen\/nanomedizin\/3-mikroskop-blick-in-die-kleinsten-welten\/\",\"url\":\"https:\/\/biotechlerncenter.interpharma.ch\/themen\/nanomedizin\/3-mikroskop-blick-in-die-kleinsten-welten\/\",\"name\":\"3. 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