{"id":469173,"date":"2025-01-02T22:16:30","date_gmt":"2025-01-02T21:16:30","guid":{"rendered":"https:\/\/www.ecinews.fr\/?p=469173"},"modified":"2025-01-02T22:16:30","modified_gmt":"2025-01-02T21:16:30","slug":"de-minuscules-antennes-sans-fil-utilisent-la-lumiere-pour-surveiller-les-communications-cellulaires","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/de-minuscules-antennes-sans-fil-utilisent-la-lumiere-pour-surveiller-les-communications-cellulaires\/","title":{"rendered":"De minuscules antennes sans fil utilisent la lumi\u00e8re pour surveiller les communications cellulaires"},"content":{"rendered":"

Dans le cadre d’un dispositif de biod\u00e9tection \u00e0 haute r\u00e9solution sans fil, les antennes pourraient aider les chercheurs \u00e0 d\u00e9coder les signaux \u00e9lectriques complexes envoy\u00e9s par les cellules – MIT<\/span><\/h3>\n

La surveillance des signaux \u00e9lectriques dans les syst\u00e8mes biologiques aide les scientifiques \u00e0 comprendre comment les cellules communiquent, ce qui peut faciliter le diagnostic et le traitement de maladies telles que l’arythmie et la maladie d’Alzheimer.<\/p>\n

Mais les appareils qui enregistrent les signaux \u00e9lectriques dans les cultures cellulaires et autres environnements liquides utilisent souvent des fils pour connecter chaque \u00e9lectrode de l’appareil \u00e0 son amplificateur respectif. Le nombre de fils pouvant \u00eatre connect\u00e9s \u00e0 l’appareil \u00e9tant limit\u00e9, le nombre de sites d’enregistrement est restreint, ce qui limite les informations pouvant \u00eatre recueillies sur les cellules.<\/p>\n

Des chercheurs du MIT ont mis au point une technique de biod\u00e9tection qui \u00e9limine le besoin de fils. Au lieu de cela, de minuscules antennes sans fil utilisent la lumi\u00e8re pour d\u00e9tecter de minuscules signaux \u00e9lectriques.<\/p>\n

De petites variations \u00e9lectriques dans le milieu liquide environnant modifient la fa\u00e7on dont les antennes diffusent la lumi\u00e8re. En utilisant un r\u00e9seau de minuscules antennes, dont chacune a un centi\u00e8me de la largeur d’un cheveu humain, les chercheurs ont pu mesurer les signaux \u00e9lectriques \u00e9chang\u00e9s entre les cellules, avec une r\u00e9solution spatiale extr\u00eame.<\/p>\n

Les dispositifs, qui sont suffisamment durables pour enregistrer des signaux en continu pendant plus de 10 heures, pourraient aider les biologistes \u00e0 comprendre comment les cellules communiquent en r\u00e9ponse \u00e0 des changements dans leur environnement. \u00c0 long terme, ces connaissances scientifiques pourraient ouvrir la voie \u00e0 des progr\u00e8s en mati\u00e8re de diagnostic, stimuler le d\u00e9veloppement de traitements cibl\u00e9s et permettre une plus grande pr\u00e9cision dans l’\u00e9valuation des nouvelles th\u00e9rapies.<\/p>\n

Beno\u00eet Desbiolles, ancien postdoc au Media Lab du MIT et auteur principal d’un article sur les dispositifs<\/a> a d\u00e9clar\u00e9 \u00ab\u00a0Pouvoir enregistrer l’activit\u00e9 \u00e9lectrique des cellules \u00e0 haut d\u00e9bit et \u00e0 haute r\u00e9solution reste un v\u00e9ritable probl\u00e8me. Nous devons essayer des id\u00e9es novatrices et des approches alternatives\u00a0\u00bb.<\/p>\n

Il est rejoint dans cet article par Jad Hanna, \u00e9tudiant invit\u00e9 au Media Lab, Raphael Ausilio, ancien \u00e9tudiant invit\u00e9, Marta J. I. Airaghi Leccardi, ancienne postdoc, Yang Yu, scientifique chez Raith America, Inc. et Deblina Sarkar, auteur principal, professeur adjoint de d\u00e9veloppement de carri\u00e8re AT&T au Media Lab et au MIT Center for Neurobiological Engineering et chef du Nano-Cybernetic Biotrek Lab. La recherche est publi\u00e9e dans Science Advances<\/em>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Dans le cadre d’un dispositif de biod\u00e9tection \u00e0 haute r\u00e9solution sans fil, les antennes pourraient aider les chercheurs \u00e0 d\u00e9coder les signaux \u00e9lectriques complexes envoy\u00e9s par les cellules – MIT La surveillance des signaux \u00e9lectriques dans les syst\u00e8mes biologiques aide les scientifiques \u00e0 comprendre comment les cellules communiquent, ce qui peut faciliter le diagnostic et […]<\/p>\n","protected":false},"author":7,"featured_media":468862,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3669,883],"tags":[4437,3699,8545,5054,5186],"domains":[47],"ppma_author":[1139,1143],"class_list":["post-469173","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouvelles","category-technologies","tag-antennes-fr","tag-capteurs-fr","tag-lumiere","tag-mit-fr","tag-sante","domains-electronique-eci"],"acf":[],"yoast_head":"De minuscules antennes sans fil utilisent la lumi\u00e8re pour surv...<\/title>\n<meta name=\"description\" content=\"De minuscules antennes sans fil utilisent la lumi\u00e8re pour surveiller les communications cellulaires, Dans le cadre d'une biod\u00e9tection \u00e0 haute r\u00e9solution...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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