{"id":143608,"date":"2024-08-22T11:15:10","date_gmt":"2024-08-22T09:15:10","guid":{"rendered":"https:\/\/sftarticles.wpenginepowered.com\/es\/?p=338927"},"modified":"2025-06-12T10:43:30","modified_gmt":"2025-06-12T09:43:30","slug":"le-microscope-le-plus-rapide-du-monde-fige-le-temps-en-une-quintillionieme-de-seconde","status":"publish","type":"post","link":"https:\/\/cms-articles.softonic.io\/fr\/le-microscope-le-plus-rapide-du-monde-fige-le-temps-en-une-quintillionieme-de-seconde\/","title":{"rendered":"Le microscope le plus rapide du monde fige le temps en une quintillioni\u00e8me de seconde"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Le monde subatomique est difficile \u00e0 saisir, non seulement parce qu&#8217;il est incroyablement petit, mais aussi parce qu&#8217;il est extr\u00eamement rapide. Maintenant, des physiciens de l&#8217;Universit\u00e9 de l&#8217;Arizona ont d\u00e9velopp\u00e9 <strong>le microscope \u00e9lectronique le plus rapide du monde, capable de capturer des ph\u00e9nom\u00e8nes qui ne durent qu&#8217;une quintillioni\u00e8me de seconde.<\/strong><\/p>\n\n\n<div class=\"sc-card-program\">\r\n  <div class=\"sc-card-program__body\">\r\n    <div class=\"sc-card-program__row clearfix\">\r\n      <div class=\"sc-card-program__col-logo\">\r\n        <img decoding=\"async\" class=\"sc-card-program__img\" src=\"https:\/\/images.sftcdn.net\/images\/t_app-icon-m\/p\/e7c83350-96d9-11e6-af79-00163ed833e7\/1861570400\/microsoft-365-download-microsoft.png\" alt=\"Microsoft 365\" width=\"100px\" height=\"100px\">\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-title\">\r\n        <span class=\"sc-card-program__title\">Microsoft 365<\/span>\r\n        <a class=\"sc-card-program__button sc-card-program-internal\" href=\"https:\/\/microsoft-365.fr.softonic.com\/\" target=\"_self\" rel=\"noopener noreferrer\">T\u00c9L\u00c9CHARGER<\/a>\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-rating\">\r\n        \r\n      <\/div>\r\n    <\/div>\r\n    <div class=\"sc-card-program__row\">\r\n      <span class=\"sc-card-program__description\"><\/span>\r\n    <\/div>\r\n    <div class=\"sc-card-program__row\">\r\n      <img decoding=\"async\" class=\"sc-card-program__bigpic\" src=\"\">\r\n    <\/div>\r\n    <a class=\"sc-card-program__link track-link sc-card-program-internal\" href=\"https:\/\/microsoft-365.fr.softonic.com\/\" target=\"_self\" rel=\"noopener noreferrer\"><\/a>\r\n  <\/div>\r\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Un bon appareil photo, avec une vitesse d&#8217;obturation mesur\u00e9e en millisecondes, pourrait prendre une photo nette d&#8217;une personne en train de courir. Mais les cam\u00e9ras les plus rapides du monde, les microscopes \u00e9lectroniques \u00e0 transmission, peuvent capturer des \u00e9v\u00e9nements \u00e0 l&#8217;\u00e9chelle des attosecondes, <strong>comme des photos d&#8217;\u00e9lectrons en train de courir.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Par ailleurs, <strong>une attoseconde est la quintillioni\u00e8me partie d&#8217;une seconde<\/strong>, ce qui fait qu&#8217;une milliseconde (la milli\u00e8me partie d&#8217;une seconde) semble une \u00e9ternit\u00e9.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">In this new Virtual Special Issue from JPC A we&#39;re showcasing the latest research on attosecond chemistry including explorations of ultrafast processes and electron and nuclear dynamics. Read it here ?<a href=\"https:\/\/t.co\/QJFEb9QaAq\">https:\/\/t.co\/QJFEb9QaAq<\/a> <a href=\"https:\/\/t.co\/L03f7NerKH\">pic.twitter.com\/L03f7NerKH<\/a><\/p>&mdash; The Journal of Physical Chemistry (@JPhysChem) <a href=\"https:\/\/twitter.com\/JPhysChem\/status\/1826212696376631761?ref_src=twsrc%5Etfw\">August 21, 2024<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Une avanc\u00e9e en physique qui pourrait contribuer \u00e0 la physique quantique, \u00e0 la chimie et \u00e0 la biologie<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Si nous agrandissons l&#8217;\u00e9chelle, <strong>il y a autant d&#8217;attosecondes dans une seconde que de secondes dans 31,7 milliards d&#8217;ann\u00e9es, soit plus du double du temps \u00e9coul\u00e9 depuis l&#8217;existence de l&#8217;univers<\/strong>. Ce sont des chiffres vraiment insondables.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En tout cas, comme nous le lisons dans <a href=\"https:\/\/newatlas.com\/physics\/worlds-fastest-microscope-quintillionth-second-attosecond\/\" target=\"_blank\" rel=\"noopener nofollow\" title=\"New Atlas\">New Atlas<\/a>, les efforts pr\u00e9c\u00e9dents pour capturer des \u00e9v\u00e9nements \u00e0 cette \u00e9chelle de temps ont atteint 43 attosecondes, que les chercheurs ont qualifi\u00e9 \u00e0 l&#8217;\u00e9poque de \u00ab l&#8217;\u00e9v\u00e9nement contr\u00f4l\u00e9 le plus court jamais cr\u00e9\u00e9 par l&#8217;humanit\u00e9 \u00bb. Maintenant, l&#8217;\u00e9quipe de l&#8217;Universit\u00e9 de l&#8217;Arizona <a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.adp5805\" target=\"_blank\" rel=\"noopener nofollow\" title=\"a r\u00e9duit encore plus le temps\">a r\u00e9duit encore plus le temps<\/a>, <strong>le figeant en une seule attoseconde.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">BREAKING NEWS<br>The Royal Swedish Academy of Sciences has decided to award the 2023 <a href=\"https:\/\/twitter.com\/hashtag\/NobelPrize?src=hash&amp;ref_src=twsrc%5Etfw\">#NobelPrize<\/a> in Physics to Pierre Agostini, Ferenc Krausz and Anne L\u2019Huillier \u201cfor experimental methods that generate attosecond pulses of light for the study of electron dynamics in matter.\u201d <a href=\"https:\/\/t.co\/6sPjl1FFzv\">pic.twitter.com\/6sPjl1FFzv<\/a><\/p>&mdash; The Nobel Prize (@NobelPrize) <a href=\"https:\/\/twitter.com\/NobelPrize\/status\/1709143709470572915?ref_src=twsrc%5Etfw\">October 3, 2023<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le nouveau travail est bas\u00e9 sur les recherches de Pierre Agostini, Ferenc Krausz et Anne L&#8217;Huilliere, qui ont g\u00e9n\u00e9r\u00e9 les premi\u00e8res impulsions lumineuses suffisamment courtes pour \u00eatre mesur\u00e9es en attosecondes.<strong> Cela leur a valu le Prix Nobel de Physique en 2023.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour la nouvelle \u00e9tude, les chercheurs ont d\u00e9velopp\u00e9 ce qu&#8217;ils appellent un \u00ab attomicroscope \u00bb. <strong>Tout d&#8217;abord, une impulsion de lumi\u00e8re ultraviolette est \u00e9mise<\/strong> sur un photocathode, qui lib\u00e8re des \u00e9lectrons ultrarapides \u00e0 l&#8217;int\u00e9rieur de l&#8217;attomicroscope.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ensuite, un faisceau laser est divis\u00e9 en deux faisceaux,<\/strong> qui sont envoy\u00e9s aux \u00e9lectrons se d\u00e9pla\u00e7ant dans le microscope. L&#8217;un de ces faisceaux est polaris\u00e9 et arrive \u00e0 des moments l\u00e9g\u00e8rement diff\u00e9rents, ce qui g\u00e9n\u00e8re un \u00ab train \u00bb d&#8217;impulsion d&#8217;\u00e9lectrons qui permet d&#8217;obtenir des images d&#8217;un \u00e9chantillon, dans ce cas, du graph\u00e8ne.<\/p>\n\n\n<div class=\"sc-card-program\">\r\n  <div class=\"sc-card-program__body\">\r\n    <div class=\"sc-card-program__row clearfix\">\r\n      <div class=\"sc-card-program__col-logo\">\r\n        <img decoding=\"async\" class=\"sc-card-program__img\" src=\"https:\/\/images.sftcdn.net\/images\/t_app-icon-m\/p\/e7c83350-96d9-11e6-af79-00163ed833e7\/1861570400\/microsoft-365-download-microsoft.png\" alt=\"Microsoft 365\" width=\"100px\" height=\"100px\">\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-title\">\r\n        <span class=\"sc-card-program__title\">Microsoft 365<\/span>\r\n        <a class=\"sc-card-program__button sc-card-program-internal\" href=\"https:\/\/microsoft-365.fr.softonic.com\/\" target=\"_self\" rel=\"noopener noreferrer\">T\u00c9L\u00c9CHARGER<\/a>\r\n      <\/div>\r\n      <div class=\"sc-card-program__col-rating\">\r\n        \r\n      <\/div>\r\n    <\/div>\r\n    <div class=\"sc-card-program__row\">\r\n      <span class=\"sc-card-program__description\"><\/span>\r\n    <\/div>\r\n    <div class=\"sc-card-program__row\">\r\n      <img decoding=\"async\" class=\"sc-card-program__bigpic\" src=\"\">\r\n    <\/div>\r\n    <a class=\"sc-card-program__link track-link sc-card-program-internal\" href=\"https:\/\/microsoft-365.fr.softonic.com\/\" target=\"_self\" rel=\"noopener noreferrer\"><\/a>\r\n  <\/div>\r\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gr\u00e2ce \u00e0 cette technique, l&#8217;\u00e9quipe a pu g\u00e9n\u00e9rer des impulsions d&#8217;\u00e9lectrons d&#8217;une dur\u00e9e d&#8217;une attoseconde<\/strong>, ce qui leur a permis d&#8217;observer des mouvements ultrarapides d&#8217;\u00e9lectrons qui ne peuvent normalement pas \u00eatre vus. Les chercheurs affirment que <strong>cette avanc\u00e9e pourrait avoir des applications en physique quantique, chimie et biologie.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le monde subatomique est difficile \u00e0 saisir, non seulement parce qu&#8217;il est incroyablement petit, mais aussi parce qu&#8217;il est extr\u00eamement rapide. Maintenant, des physiciens de l&#8217;Universit\u00e9 de l&#8217;Arizona ont d\u00e9velopp\u00e9 le microscope \u00e9lectronique le plus rapide du monde, capable de capturer des ph\u00e9nom\u00e8nes qui ne durent qu&#8217;une quintillioni\u00e8me de seconde. Un bon appareil photo, avec &hellip; <a href=\"https:\/\/cms-articles.softonic.io\/fr\/le-microscope-le-plus-rapide-du-monde-fige-le-temps-en-une-quintillionieme-de-seconde\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Le microscope le plus rapide du monde fige le temps en une quintillioni\u00e8me de seconde&#8221;<\/span><\/a><\/p>\n","protected":false},"author":9265,"featured_media":143609,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","wpcf-pageviews":1},"categories":[16761],"tags":[17057],"usertag":[],"vertical":[],"content-category":[],"class_list":["post-143608","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-ciencia"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/posts\/143608","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/users\/9265"}],"replies":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/comments?post=143608"}],"version-history":[{"count":1,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/posts\/143608\/revisions"}],"predecessor-version":[{"id":160399,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/posts\/143608\/revisions\/160399"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/media\/143609"}],"wp:attachment":[{"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/media?parent=143608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/categories?post=143608"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/tags?post=143608"},{"taxonomy":"usertag","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/usertag?post=143608"},{"taxonomy":"vertical","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/vertical?post=143608"},{"taxonomy":"content-category","embeddable":true,"href":"https:\/\/cms-articles.softonic.io\/fr\/wp-json\/wp\/v2\/content-category?post=143608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}