{"id":6926,"date":"2025-06-05T14:28:17","date_gmt":"2025-06-05T13:28:17","guid":{"rendered":"https:\/\/blog.univ-angers.fr\/polytech_2A\/?p=6926"},"modified":"2025-06-05T14:28:17","modified_gmt":"2025-06-05T13:28:17","slug":"le-trieur-de-cellules","status":"publish","type":"post","link":"https:\/\/blog.univ-angers.fr\/polytech_2A\/2025\/06\/05\/le-trieur-de-cellules\/","title":{"rendered":"Le trieur de cellules"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>Contexte : Un d\u00e9fi scientifique ludique<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dans le cadre de notre cycle pr\u00e9paratoire \u00e0 Polytech Angers, nous, <strong>Lola<\/strong>, <strong>Ma\u00ebl<\/strong>, <strong>Sarah <\/strong>et <strong>Ninon<\/strong>, avons choisi un projet de fin d&#8217;ann\u00e9e ambitieux : <strong>reproduire un trieur de cellules<\/strong>, utilis\u00e9 en laboratoire, mais de mani\u00e8re p\u00e9dagogique et accessible \u00e0 tous.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcf8 [ UNE FINE \u00c9QUIPE ]<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_7404-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_7404-1024x768.jpg\" alt=\"\" class=\"wp-image-6927\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_7404-1024x768.jpg 1024w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_7404-300x225.jpg 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_7404-768x576.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_7404-1536x1152.jpg 1536w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_7404-2048x1536.jpg 2048w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_7404-400x300.jpg 400w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le but ? Cr\u00e9er un dispositif interactif pour la F\u00eate de la Science, en collaboration avec deux laborantins du CHU d\u2019Angers, Catherine et J\u00e9r\u00f4me.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Mais c\u2019est quoi un trieur de cellules ?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Un trieur de cellules (ou cytom\u00e8tre en flux) est un appareil de laboratoire qui trie des cellules selon leurs caract\u00e9ristiques : taille, structure, prot\u00e9ines de surface, etc. C\u2019est crucial pour la recherche m\u00e9dicale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> [ FONCTIONNEMENT D\u2019UN TRIEUR DE CELLULES ]<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Representation-schematique-du-fonctionnement-dun-cytometre-en-flux-ens-lyonfr-2012.png\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"631\" data-id=\"6932\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Representation-schematique-du-fonctionnement-dun-cytometre-en-flux-ens-lyonfr-2012.png\" alt=\"\" class=\"wp-image-6932\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Representation-schematique-du-fonctionnement-dun-cytometre-en-flux-ens-lyonfr-2012.png 850w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Representation-schematique-du-fonctionnement-dun-cytometre-en-flux-ens-lyonfr-2012-300x223.png 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Representation-schematique-du-fonctionnement-dun-cytometre-en-flux-ens-lyonfr-2012-768x570.png 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Representation-schematique-du-fonctionnement-dun-cytometre-en-flux-ens-lyonfr-2012-404x300.png 404w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Source : <a href=\"https:\/\/www.researchgate.net\/figure\/Representation-schematique-du-fonctionnement-dun-cytometre-en-flux-ens-lyonfr-2012_fig26_341883293\">https:\/\/www.researchgate.net\/figure\/Representation-schematique-du-fonctionnement-dun-cytometre-en-flux-ens-lyonfr-2012_fig26_341883293<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcf8 [ LE CYTOM\u00c8TRE EN FLUX DE L&#8217;INSTITUT DE BIOLOGIE DU CHU D&#8217;ANGERS ]<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5492-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"6947\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5492-1024x768.jpg\" alt=\"\" class=\"wp-image-6947\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5492-1024x768.jpg 1024w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5492-300x225.jpg 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5492-768x576.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5492-1536x1152.jpg 1536w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5492-2048x1536.jpg 2048w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5492-400x300.jpg 400w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5483-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"6945\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5483-1024x768.jpg\" alt=\"\" class=\"wp-image-6945\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5483-1024x768.jpg 1024w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5483-300x225.jpg 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5483-768x576.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5483-1536x1152.jpg 1536w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5483-2048x1536.jpg 2048w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5483-400x300.jpg 400w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5489-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-id=\"6941\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5489-768x1024.jpg\" alt=\"\" class=\"wp-image-6941\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5489-768x1024.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5489-225x300.jpg 225w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5489-1152x1536.jpg 1152w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5489-1536x2048.jpg 1536w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5489-scaled.jpg 1920w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5480-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"6938\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5480-1024x768.jpg\" alt=\"\" class=\"wp-image-6938\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5480-1024x768.jpg 1024w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5480-300x225.jpg 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5480-768x576.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5480-1536x1152.jpg 1536w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5480-2048x1536.jpg 2048w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5480-400x300.jpg 400w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" \/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Le premier prototype de Catherine et J\u00e9r\u00f4me : une id\u00e9e ing\u00e9nieuse, mais \u00e0 perfectionner<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lorsque nous avons rencontr\u00e9 pour la premi\u00e8re fois Catherine et J\u00e9r\u00f4me, deux laborantins du CHU d\u2019Angers, ils nous ont pr\u00e9sent\u00e9 une maquette simplifi\u00e9e qu\u2019ils avaient con\u00e7ue eux-m\u00eames. Ce prototype avait pour but d\u2019expliquer de mani\u00e8re ludique le fonctionnement du&nbsp; trieur de cellules<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Leur version s\u2019appuie sur une id\u00e9e simple mais efficace : utiliser <strong>des billes pour repr\u00e9senter des cellules<\/strong>, et<strong> les trier en fonction de leur r\u00e9ponse \u00e0 un champ magn\u00e9tique<\/strong>. Le principe est le suivant : les billes magn\u00e9tiques (symbolisant une population de cellules sp\u00e9cifiques) sont d\u00e9vi\u00e9es par un aimant plac\u00e9 sur le c\u00f4t\u00e9, tandis que les billes en plastique, insensibles \u00e0 l\u2019aimant, tombent tout droit dans une autre bo\u00eete.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00eame si l&#8217;id\u00e9e de base est intelligente et fonctionnelle, plusieurs d\u00e9fauts apparaissent : le design est perfectible, le fonctionnement peu fiable, et le projet difficile \u00e0 transporter.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcf8[ PREMI\u00c8RE MAQUETTE DE CATHERINE ET J\u00c9R\u00d4ME ]<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/3595283e-fea3-447b-b789-58a9309a7bc5.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-id=\"6935\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/3595283e-fea3-447b-b789-58a9309a7bc5-768x1024.jpg\" alt=\"\" class=\"wp-image-6935\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/3595283e-fea3-447b-b789-58a9309a7bc5-768x1024.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/3595283e-fea3-447b-b789-58a9309a7bc5-225x300.jpg 225w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/3595283e-fea3-447b-b789-58a9309a7bc5-1152x1536.jpg 1152w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/3595283e-fea3-447b-b789-58a9309a7bc5.jpg 1536w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/0308493f-31e0-47ba-8e69-f7e250e88d4e.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-id=\"6937\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/0308493f-31e0-47ba-8e69-f7e250e88d4e-768x1024.jpg\" alt=\"\" class=\"wp-image-6937\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/0308493f-31e0-47ba-8e69-f7e250e88d4e-768x1024.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/0308493f-31e0-47ba-8e69-f7e250e88d4e-225x300.jpg 225w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/0308493f-31e0-47ba-8e69-f7e250e88d4e-1152x1536.jpg 1152w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/0308493f-31e0-47ba-8e69-f7e250e88d4e.jpg 1536w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/7d018728-22c1-4a0b-9394-a501e3115a24.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-id=\"6967\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/7d018728-22c1-4a0b-9394-a501e3115a24-768x1024.jpg\" alt=\"\" class=\"wp-image-6967\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/7d018728-22c1-4a0b-9394-a501e3115a24-768x1024.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/7d018728-22c1-4a0b-9394-a501e3115a24-225x300.jpg 225w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/7d018728-22c1-4a0b-9394-a501e3115a24-1152x1536.jpg 1152w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/7d018728-22c1-4a0b-9394-a501e3115a24.jpg 1536w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Notre mission \u00e9tait claire : partir de l\u2019id\u00e9e initiale : trier les billes selon leurs propri\u00e9t\u00e9s physiques et :&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Repenser le <strong>design<\/strong><\/li>\n\n\n\n<li>Am\u00e9liorer la <strong>fiabilit\u00e9 du tri<\/strong><\/li>\n\n\n\n<li>Garder un <strong>aspect ludique<\/strong> et<strong> p\u00e9dagogique<\/strong><\/li>\n\n\n\n<li>R\u00e9duire le <strong>bruit<\/strong>&nbsp;<\/li>\n\n\n\n<li>Cr\u00e9er deux prototypes :<strong> par magn\u00e9tisme<\/strong> et <strong>par taille<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" \/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1. Prototype n\u00b01 : Tri par la taille des billes<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nous avons imagin\u00e9 un toboggan \u00e0 trois trous, chacun adapt\u00e9 \u00e0 un diam\u00e8tre de bille (14 mm, 16 mm, 18 mm). Les billes roulent et tombent dans la bonne bo\u00eete selon leur taille.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcf8 [ CR\u00c9ATION DU TOBOGGAN ]<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5524-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" data-id=\"6968\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5524-1024x576.jpg\" alt=\"\" class=\"wp-image-6968\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5524-1024x576.jpg 1024w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5524-300x169.jpg 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5524-768x432.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5524-1536x864.jpg 1536w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5524-2048x1152.jpg 2048w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_5524-500x281.jpg 500w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Conception :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pour donner vie \u00e0 notre projet, nous avons commenc\u00e9 par une <strong>mod\u00e9lisation 3D <\/strong>\u00e0 l\u2019aide du logiciel SolidWorks. Ce logiciel de conception assist\u00e9e par ordinateur nous a permis de dessiner toutes les pi\u00e8ces du dispositif avec pr\u00e9cision, de v\u00e9rifier l\u2019assemblage virtuellement, et de produire des plans techniques d\u00e9taill\u00e9s pour la fabrication.<\/li>\n\n\n\n<li>Pour donner vie \u00e0 notre projet, nous avons commenc\u00e9 par une <strong>mod\u00e9lisation 3D <\/strong>\u00e0 l\u2019aide du logiciel SolidWorks. Ce logiciel de conception assist\u00e9e par ordinateur nous a permis de dessiner toutes les pi\u00e8ces du dispositif avec pr\u00e9cision, de v\u00e9rifier l\u2019assemblage virtuellement, et de produire des plans techniques d\u00e9taill\u00e9s pour la fabrication.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[ PROTOTYPE FINAL R\u00c9ALIS\u00c9 EN MOD\u00c9LISATION 3D SUR A L\u2019AIDE DU LOGICIEL SOLIDWORKS ]<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-04-105322.png\"><img loading=\"lazy\" decoding=\"async\" width=\"992\" height=\"791\" data-id=\"6969\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-04-105322.png\" alt=\"\" class=\"wp-image-6969\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-04-105322.png 992w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-04-105322-300x239.png 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-04-105322-768x612.png 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-04-105322-376x300.png 376w\" sizes=\"auto, (max-width: 992px) 100vw, 992px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Une fois les pi\u00e8ces valid\u00e9es, nous avons proc\u00e9d\u00e9 \u00e0 la <strong>d\u00e9coupe laser<\/strong> de la structure principale. Nous avons choisi <strong>le bois<\/strong> comme mat\u00e9riau principal, \u00e0 la fois pour son aspect chaleureux, sa l\u00e9g\u00e8ret\u00e9 et sa facilit\u00e9 de d\u00e9coupe. Chaque planche a \u00e9t\u00e9 d\u00e9coup\u00e9e avec pr\u00e9cision gr\u00e2ce \u00e0 la machine du FabLab, garantissant un ajustement parfait des pi\u00e8ces lors de l\u2019assemblage.<\/li>\n\n\n\n<li>Pour <strong>l\u2019entonnoir<\/strong>, \u00e9l\u00e9ment central du syst\u00e8me de tri, nous avons opt\u00e9 pour <strong>l\u2019impression 3D<\/strong>. Cela nous a permis de concevoir une forme sur mesure, parfaitement adapt\u00e9e au diam\u00e8tre des billes. Ce choix nous a \u00e9galement permis d\u2019avoir un visuel original, en imprimant l\u2019entonnoir en bleu \u00e9lectrique.<\/li>\n\n\n\n<li>C\u00f4t\u00e9 <strong>bo\u00eetes de r\u00e9ception<\/strong>, nous avons pris soin de peindre chaque compartiment \u00e0 la couleur des billes correspondantes : <strong>jaune<\/strong>, <strong>vert<\/strong> et <strong>gris m\u00e9tallis\u00e9<\/strong>. Ce code couleur facilite la compr\u00e9hension imm\u00e9diate du fonctionnement du tri pour le public.&nbsp;<\/li>\n\n\n\n<li>Enfin, pour offrir une finition nette, nous avons appliqu\u00e9 de la <strong>peinture acrylique noire<\/strong> en bombe<strong> sur l\u2019ensemble de la structure<\/strong>. Ce choix, en plus d\u2019\u00e9viter les traces de pinceau, assure un rendu uniforme, \u00e9l\u00e9gant et propre.&nbsp;<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" \/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Prototype n\u00b02 : Tri par magn\u00e9tisme<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nous avons aussi retravaill\u00e9 le mod\u00e8le original de Catherine et J\u00e9r\u00f4me. Les billes aimant\u00e9es sont d\u00e9vi\u00e9es vers une bo\u00eete gr\u00e2ce \u00e0 un aimant bien positionn\u00e9, tandis que les autres continuent leur route.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-6 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-05-140745.png\"><img loading=\"lazy\" decoding=\"async\" width=\"770\" height=\"653\" data-id=\"7533\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-05-140745.png\" alt=\"\" class=\"wp-image-7533\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-05-140745.png 770w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-05-140745-300x254.png 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-05-140745-768x651.png 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/Capture-decran-2025-06-05-140745-354x300.png 354w\" sizes=\"auto, (max-width: 770px) 100vw, 770px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Am\u00e9liorations :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nous avons tout d\u2019abord remplac\u00e9 la structure en carton par du <strong>bois<\/strong>, d\u00e9coup\u00e9e avec pr\u00e9cision gr\u00e2ce \u00e0 la d\u00e9coupeuse laser. Le r\u00e9sultat est une maquette beaucoup plus stable, durable et transportable, parfaitement adapt\u00e9e aux d\u00e9monstrations en public.<\/li>\n\n\n\n<li>Ensuite, nous avons ajout\u00e9 des <strong>bo\u00eetes de r\u00e9cup\u00e9ration<\/strong> <strong>\u00e9quip\u00e9es de tiroirs coulissants<\/strong>. Ces tiroirs permettent de collecter facilement les billes apr\u00e8s chaque d\u00e9monstration, sans avoir \u00e0 d\u00e9monter l\u2019appareil ou retourner les bo\u00eetes. Ce petit d\u00e9tail rend l\u2019ensemble bien plus fonctionnel et agr\u00e9able \u00e0 utiliser.<\/li>\n\n\n\n<li>Un autre point cl\u00e9 a \u00e9t\u00e9 le <strong>repositionnement de l\u2019aimant<\/strong>. Dans la version initiale, il n\u2019exer\u00e7ait pas toujours une attraction suffisante ou, au contraire, bloquait les billes magn\u00e9tiques. Apr\u00e8s de nombreux tests, nous avons ajust\u00e9 son emplacement de mani\u00e8re millim\u00e9tr\u00e9e afin d\u2019obtenir un tri fiable, fluide et pr\u00e9cis, sans perturbation du flux de billes.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" \/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>R\u00e9sultat final<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[ R\u00c9SULTAT DES DEUX TRIEURS ]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcf8 [ TRI PAR TAILLE ]                        <\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-7 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_97282-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-id=\"7616\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_97282-768x1024.jpg\" alt=\"\" class=\"wp-image-7616\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_97282-768x1024.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_97282-225x300.jpg 225w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_97282-1152x1536.jpg 1152w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_97282-1536x2048.jpg 1536w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/IMG_97282-scaled.jpg 1920w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/unnamed-5.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-id=\"7614\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/unnamed-5-768x1024.jpg\" alt=\"\" class=\"wp-image-7614\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/unnamed-5-768x1024.jpg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/unnamed-5-225x300.jpg 225w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/unnamed-5-1152x1536.jpg 1152w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/unnamed-5.jpg 1200w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure>\n<\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-video aligncenter\"><video height=\"480\" style=\"aspect-ratio: 848 \/ 480;\" width=\"848\" controls src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/WhatsApp-Video-2025-06-05-a-10.44.27_97f10787.mp4\"><\/video><\/figure>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcf8 [ TRI PAR MAGN\u00c9TISME ]<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-8 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/c49fba39-5ccd-4c30-9fb2-6f19bfef9aa8.jpeg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"7613\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/c49fba39-5ccd-4c30-9fb2-6f19bfef9aa8-1024x768.jpeg\" alt=\"\" class=\"wp-image-7613\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/c49fba39-5ccd-4c30-9fb2-6f19bfef9aa8-1024x768.jpeg 1024w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/c49fba39-5ccd-4c30-9fb2-6f19bfef9aa8-300x225.jpeg 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/c49fba39-5ccd-4c30-9fb2-6f19bfef9aa8-768x576.jpeg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/c49fba39-5ccd-4c30-9fb2-6f19bfef9aa8-1536x1152.jpeg 1536w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/c49fba39-5ccd-4c30-9fb2-6f19bfef9aa8-400x300.jpeg 400w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/c49fba39-5ccd-4c30-9fb2-6f19bfef9aa8.jpeg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/ff39f746-c31b-481c-a9b8-2d2b77949c69.jpeg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"7611\" src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/ff39f746-c31b-481c-a9b8-2d2b77949c69-1024x768.jpeg\" alt=\"\" class=\"wp-image-7611\" srcset=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/ff39f746-c31b-481c-a9b8-2d2b77949c69-1024x768.jpeg 1024w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/ff39f746-c31b-481c-a9b8-2d2b77949c69-300x225.jpeg 300w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/ff39f746-c31b-481c-a9b8-2d2b77949c69-768x576.jpeg 768w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/ff39f746-c31b-481c-a9b8-2d2b77949c69-1536x1152.jpeg 1536w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/ff39f746-c31b-481c-a9b8-2d2b77949c69-400x300.jpeg 400w, https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/ff39f746-c31b-481c-a9b8-2d2b77949c69.jpeg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"480\" style=\"aspect-ratio: 848 \/ 480;\" width=\"848\" controls src=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/files\/2025\/06\/e1ce5ce2-bf9e-4c5a-9a5b-f21fd33a3bbe1.mp4\"><\/video><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ce projet nous a offert une exp\u00e9rience concr\u00e8te et compl\u00e8te, bien au-del\u00e0 de la simple application de cours th\u00e9oriques.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nous avons pu mettre en pratique nos comp\u00e9tences techniques, que ce soit en mod\u00e9lisation 3D ou en en fabrication num\u00e9rique.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C&#8217;\u00e9tait aussi une vraie exp\u00e9rience de travail en \u00e9quipe, o\u00f9 chacun a pu apporter ses id\u00e9es, g\u00e9rer ses responsabilit\u00e9s et s\u2019adapter aux besoins du groupe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nous avons eu l\u2019opportunit\u00e9 d\u2019\u00eatre cr\u00e9atifs, en partant de contraintes r\u00e9elles pour imaginer des solutions innovantes, ludiques et p\u00e9dagogiques.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Enfin, nous avons g\u00e9r\u00e9 ce projet de A \u00e0 Z : de la premi\u00e8re r\u00e9union avec les laborantins jusqu\u2019\u00e0 la r\u00e9alisation finale et la pr\u00e9paration des d\u00e9monstrations. Une belle aventure technique et formatrice.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mission accomplie !<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Contexte : Un d\u00e9fi scientifique ludique Dans le cadre de notre cycle pr\u00e9paratoire \u00e0 Polytech Angers, nous, Lola, Ma\u00ebl, Sarah et Ninon, avons choisi un projet de fin d&#8217;ann\u00e9e ambitieux : reproduire un trieur de cellules, utilis\u00e9 en laboratoire, mais &hellip; <a href=\"https:\/\/blog.univ-angers.fr\/polytech_2A\/2025\/06\/05\/le-trieur-de-cellules\/\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":108779,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[631],"tags":[],"class_list":["post-6926","post","type-post","status-publish","format-standard","hentry","category-631"],"_links":{"self":[{"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/posts\/6926","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/users\/108779"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/comments?post=6926"}],"version-history":[{"count":4,"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/posts\/6926\/revisions"}],"predecessor-version":[{"id":7627,"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/posts\/6926\/revisions\/7627"}],"wp:attachment":[{"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/media?parent=6926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/categories?post=6926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.univ-angers.fr\/polytech_2A\/wp-json\/wp\/v2\/tags?post=6926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}