{"id":1381,"date":"2021-12-29T13:36:22","date_gmt":"2021-12-29T13:36:22","guid":{"rendered":"https:\/\/novanta.com\/fr\/precision-manufacturing\/resources\/whitepapers\/mesure-de-particules-de-haute-precision-a-laide-de-lasers\/"},"modified":"2026-09-02T11:02:12","modified_gmt":"2026-09-02T11:02:12","slug":"mesure-tres-precise-des-particules-a-laide-de-lasers","status":"publish","type":"novanta_tech_paper","link":"https:\/\/novanta.com\/fr\/precision-manufacturing\/ressources\/documents-blancs\/mesure-tres-precise-des-particules-a-laide-de-lasers\/","title":{"rendered":"Mesure de particules de haute pr\u00e9cision \u00e0 l&rsquo;aide de lasers"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"h-technical-paper-overview\">Pr\u00e9sentation de l&rsquo;article technique<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-highly-accurate-particle-measuring-with-lasers\"><strong>Mesure hautement pr\u00e9cise des particules \u00e0 l&rsquo;aide de lasers<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><em>C&rsquo;est la stabilit\u00e9 du faisceau, et non la puissance brute, qui d\u00e9termine les faux positifs des compteurs de particules.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans la fabrication de plaquettes de semi-conducteurs, la puret\u00e9 des fluides chimiques, de refroidissement et de nettoyage n\u2019est pas un simple atout : c\u2019est ce qui fait la diff\u00e9rence entre le rendement et les rebuts. Un contaminant non d\u00e9tect\u00e9 entra\u00eene un d\u00e9faut sur la plaquette ; un faux positif d\u00e9clenche un arr\u00eat inutile de la ligne de production. Le laser int\u00e9gr\u00e9 \u00e0 chaque compteur de particules d\u00e9termine si le syst\u00e8me va entra\u00eener une perte de rendement ou un arr\u00eat de la production.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cet article technique de Laser Quantum (une marque de Novanta) explique le fonctionnement du comptage de particules au sein des instruments de mesure de la puret\u00e9 des fluides pour semi-conducteurs : un faisceau laser traverse une cellule d\u2019\u00e9coulement, la lumi\u00e8re diffract\u00e9e par les particules est capt\u00e9e par un capteur CCD ou un r\u00e9seau de photodiodes dispos\u00e9 autour d\u2019un absorbeur de faisceau central \u2014 et pourquoi les lasers gem 532 nm et opus 532 nm (M\u00b2 proche de 1, pointage stable, faible bruit, refroidissement par air) r\u00e9duisent les faux positifs dans le cadre d\u2019un d\u00e9ploiement 24 h\/24 et 7 j\/7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-takeaways-include\">Principaux points \u00e0 retenir :<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pourquoi la pr\u00e9cision de pointage du faisceau et le faible bruit \u2014 et non la puissance brute \u2014 d\u00e9terminent le taux de faux positifs dans les compteurs de particules liquides<\/li>\n\n\n\n<li>Comment la lumi\u00e8re diffract\u00e9e par les particules dans un capteur CCD ou un r\u00e9seau de photodiodes permet de d\u00e9terminer la taille et le nombre de particules<\/li>\n\n\n\n<li>Quand les lasers refroidis \u00e0 l\u2019air deviennent indispensables : les environnements de fabrication de semi-conducteurs o\u00f9 le refroidissement par eau n\u2019est pas autoris\u00e9 ou n\u2019est pas envisageable<\/li>\n\n\n\n<li>Ce qu\u2019offrent les lasers gem 532 nm et opus 532 nm : M\u00b2 proche de 1, r\u00e9troaction de puissance int\u00e9gr\u00e9e, technologie de cavit\u00e9 brevet\u00e9e<\/li>\n\n\n\n<li>Un cadre d\u2019int\u00e9gration pratique : encombrement r\u00e9duit, rendement \u00e9nerg\u00e9tique \u00e9lev\u00e9, fiabilit\u00e9 \u00e0 long terme 24 h\/24, 7 j\/7<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00e9l\u00e9chargez le document technique complet pour d\u00e9couvrir le sch\u00e9ma optique du comptage de particules, la justification technique des sp\u00e9cifications laser permettant de r\u00e9duire les faux positifs lors des tests de puret\u00e9 des fluides pour semi-conducteurs, ainsi que les caract\u00e9ristiques d\u2019int\u00e9gration (refroidissement par air, r\u00e9gulation de puissance int\u00e9gr\u00e9e, faible encombrement) qui d\u00e9terminent si un compteur de particules r\u00e9siste aux conditions de la cha\u00eene de production ou devient un fardeau en termes de maintenance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pr\u00e9sentation de l&rsquo;article technique Mesure hautement pr\u00e9cise des particules \u00e0 l&rsquo;aide de lasers C&rsquo;est la stabilit\u00e9 du faisceau, et non la puissance brute, qui d\u00e9termine les faux positifs des compteurs de particules. Dans la fabrication de plaquettes de semi-conducteurs, la puret\u00e9 des fluides chimiques, de refroidissement et de nettoyage n\u2019est pas un simple atout : [&hellip;]<\/p>\n","protected":false},"author":342,"featured_media":1052,"template":"","meta":{"_acf_changed":false,"card_thumbnail_id":0,"show_table_of_content":true},"class_list":["post-1381","novanta_tech_paper","type-novanta_tech_paper","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Highly Accurate Particle Measuring Using Lasers | Novanta<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez comment les techniques d&#039;imagerie biom\u00e9dicale par laser permettent de r\u00e9aliser des mesures de particules d&#039;une grande pr\u00e9cision pour les syst\u00e8mes laser destin\u00e9s \u00e0 la recherche scientifique et au 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