{"id":48600,"date":"2021-12-03T10:39:32","date_gmt":"2021-12-03T08:39:32","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=48600"},"modified":"2022-01-06T10:59:05","modified_gmt":"2022-01-06T08:59:05","slug":"transistors-electrochimiques-organiques-dendritiques-cultives-par-electropoly-merisation-pour-lingenierie-neuromorphique-3d-advanced-science","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/newsletter\/transistors-electrochimiques-organiques-dendritiques-cultives-par-electropoly-merisation-pour-lingenierie-neuromorphique-3d-advanced-science.html","title":{"rendered":"Transistors \u00e9lectrochimiques organiques dendritiques cultiv\u00e9s par \u00e9lectro-polym\u00e9risation pour l\u2019ing\u00e9nierie neuromorphique 3D"},"content":{"rendered":"<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ky2qmi4z-af255b1bc9690b23108d1b9fbe2061cf\">\n#top .av-special-heading.av-ky2qmi4z-af255b1bc9690b23108d1b9fbe2061cf{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-ky2qmi4z-af255b1bc9690b23108d1b9fbe2061cf .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-ky2qmi4z-af255b1bc9690b23108d1b9fbe2061cf .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-ky2qmi4z-af255b1bc9690b23108d1b9fbe2061cf av-special-heading-h3 blockquote modern-quote modern-centered  avia-builder-el-0  el_before_av_hr  avia-builder-el-first'><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >Transistors \u00e9lectrochimiques organiques dendritiques cultiv\u00e9s par \u00e9lectro-polym\u00e9risation pour l\u2019ing\u00e9nierie neuromorphique 3D<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<div  class='hr av-ml4qd4-8dd1f5961acd6ee3331e1157586eb758 hr-default  avia-builder-el-1  el_after_av_heading  el_before_av_textblock'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-kwq5lb88-ecd1e28f6e1da6768bc775958d61ab34'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/neurones.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-48616\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/neurones.jpg\" alt=\"\" width=\"500\" height=\"329\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/neurones.jpg 800w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/neurones-300x197.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/neurones-768x505.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/neurones-18x12.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/neurones-705x464.jpg 705w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1aff81k-0c3130a4c30654fdcfc9f2c7e72e1926\">\n.flex_column.av-1aff81k-0c3130a4c30654fdcfc9f2c7e72e1926{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1aff81k-0c3130a4c30654fdcfc9f2c7e72e1926 av_one_half  avia-builder-el-3  el_after_av_textblock  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kwq4ydvb-65d9ab602a938fdf8f874198ba7440de'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h4>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-b58072c982babce8ed7840ecc9331fc9\">\n.av_font_icon.av-13ewzjw-b58072c982babce8ed7840ecc9331fc9{\ncolor:#800000;\nborder-color:#800000;\n}\n.av_font_icon.av-13ewzjw-b58072c982babce8ed7840ecc9331fc9 .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-b58072c982babce8ed7840ecc9331fc9 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue885' data-av_iconfont='entypo-fontello' ><\/span><\/span><\/h4>\n<p><strong>A quoi pourrait ressembler l\u2019\u00e9lectronique de demain\u00a0? Une possibilit\u00e9 tr\u00e8s attractive serait de s\u2019inspirer des syst\u00e8mes biologiques. Notamment en reproduisant les caract\u00e9ristiques clefs du cerveau, \u00e0 la fois en termes de fabrication et de fonctionnement. La possibilit\u00e9 d\u2019organiser des milliards de neurones pour atteindre des syst\u00e8mes capables de voir, sentir, entendre apparait fascinante et a motiv\u00e9 de r\u00e9cents travaux de chercheurs de l\u2019IEMN, publi\u00e9s dans les journaux Nature Communications et Advanced Sciences.<\/strong><\/p>\n<h4>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-b58072c982babce8ed7840ecc9331fc9\">\n.av_font_icon.av-13ewzjw-b58072c982babce8ed7840ecc9331fc9{\ncolor:#800000;\nborder-color:#800000;\n}\n.av_font_icon.av-13ewzjw-b58072c982babce8ed7840ecc9331fc9 .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-b58072c982babce8ed7840ecc9331fc9 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue885' data-av_iconfont='entypo-fontello' ><\/span><\/span><\/h4>\n<p>Dans le cadre du projet ERC-IONOS, les chercheurs de l\u2019IEMN se sont int\u00e9ress\u00e9s \u00e0 la possibilit\u00e9 de faire croitre des mat\u00e9riaux organiques par \u00e9lectro-polym\u00e9risation puls\u00e9e pour reproduire les croissances dendritiques \u00e0 l\u2019origine de la structuration des r\u00e9seaux de neurones. Cette d\u00e9monstration permet de reproduire une propri\u00e9t\u00e9 clef de la biologie\u00a0: la plasticit\u00e9 structurale. Et l\u2019histoire ne s\u2019arr\u00eate pas l\u00e0, car ces m\u00eames mat\u00e9riaux dendritiques peuvent \u00e9galement reproduire des \u00e9l\u00e9ments de traitement des signaux clefs en biologie tels que la plasticit\u00e9 synaptique et l\u2019int\u00e9gration dendritique.<\/p>\n<h4>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-b58072c982babce8ed7840ecc9331fc9\">\n.av_font_icon.av-13ewzjw-b58072c982babce8ed7840ecc9331fc9{\ncolor:#800000;\nborder-color:#800000;\n}\n.av_font_icon.av-13ewzjw-b58072c982babce8ed7840ecc9331fc9 .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-b58072c982babce8ed7840ecc9331fc9 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue885' data-av_iconfont='entypo-fontello' ><\/span><\/span><\/h4>\n<p>La plasticit\u00e9 structurale est le m\u00e9canisme permettant aux r\u00e9seaux neuronaux d\u2019imprimer une topologie 3D sp\u00e9cifique \u00e0 une exp\u00e9rience multi-sensorielle unique, pour traiter efficacement l\u2019information. Dans les r\u00e9seaux de neurones artificiels, les topologies restent un espace d\u2019optimisation majeur, tant au niveau software que hardware. En effet, les m\u00e9canismes permettant \u00e0 la biologie de s\u2019auto-organiser et les r\u00e8gles d\u00e9finissant des topologies optimales restent largement incompris et sont abord\u00e9s de mani\u00e8re empirique dans le monde artificiel. Un aspect diff\u00e9renciant entre biologie et \u00e9lectronique est la possibilit\u00e9 des syst\u00e8mes biologiques \u00e0 s\u2019assembler de mani\u00e8re bottom-up (les \u00e9l\u00e9ments de base sont d\u00e9finis en premier, la fonction est obtenue dans un deuxi\u00e8me temps), quand l\u2019\u00e9lectronique est largement top-down (les fonctions sont pr\u00e9d\u00e9finies en amont, et les composants organis\u00e9s pour les reproduire). En utilisant l\u2019\u00e9lectro-polym\u00e9risation puls\u00e9e du PEDOT:PSS, les chercheurs de l\u2019IEMN ont montr\u00e9 qu\u2019il \u00e9tait possible de contr\u00f4ler finement la structures de dendrites conductrices dans l\u2019eau.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-uvam48-e06b9f80aea8bba5af52c98d42f9d038\">\n.flex_column.av-uvam48-e06b9f80aea8bba5af52c98d42f9d038{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-uvam48-e06b9f80aea8bba5af52c98d42f9d038 av_one_half  avia-builder-el-8  el_after_av_one_half  el_before_av_one_full  flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kwq4ydvb-65d9ab602a938fdf8f874198ba7440de'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Les morphologies obtenues peuvent \u00eatre modifi\u00e9es en fonction de l\u2019environnement chimique et l\u2019exp\u00e9rience des stress \u00e9lectriques cumul\u00e9s pour atteindre une vari\u00e9t\u00e9 de morphologies reminiscentes des structures dendritiques neuronales. Cette approche permet alors d\u2019envisager une \u00e9lectronique en perp\u00e9tuelle \u00e9volution structurelle, en perp\u00e9tuelle mutation, o\u00f9 les concepts de m\u00e9moire et d\u2019apprentissage d\u00e9rivent davantage de la capacit\u00e9 physique d\u2019un r\u00e9seau \u00e0 former de nouvelles connections, plut\u00f4t que celle de transporter l\u2019information de mani\u00e8re binaire entre composants fig\u00e9s sur un substrat.<\/p>\n<h4>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-b58072c982babce8ed7840ecc9331fc9\">\n.av_font_icon.av-13ewzjw-b58072c982babce8ed7840ecc9331fc9{\ncolor:#800000;\nborder-color:#800000;\n}\n.av_font_icon.av-13ewzjw-b58072c982babce8ed7840ecc9331fc9 .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-b58072c982babce8ed7840ecc9331fc9 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue885' data-av_iconfont='entypo-fontello' ><\/span><\/span><\/h4>\n<p>La topologie dendritique est loin d\u2019\u00eatre le seul ingr\u00e9dient utilis\u00e9 par la biologie pour traiter les signaux neuronaux\u00a0: La transmission de l\u2019information dans les r\u00e9seaux de neurones est pond\u00e9r\u00e9e par les synapses qui permettent d\u2019impl\u00e9menter la fonction clef de l\u2019apprentissage. Les dendrites artificielles des chercheurs de l\u2019IEMN peuvent \u00e9galement \u00eatre utilis\u00e9es dans cette perspective\u00a0: lorsque ces dendrites artificielles s\u2019interconnectent entres elles, ces mat\u00e9riaux se comportent comme de r\u00e9els composants synaptiques. En effet, le PEDOT:PSS est bien connu pour ses propri\u00e9t\u00e9s de conducteur \u00e9lectronique et ionique permettant de coupler le transport de ses deux porteurs de charge (plus pr\u00e9cis\u00e9ment les polarons du polym\u00e8re et les ions solvat\u00e9s de l\u2019\u00e9lectrolyte). Cette propri\u00e9t\u00e9 permet d\u2019utiliser le PEDOT:PSS comme transistor organique \u00e9lectrochimique (OECT). Les chercheurs du projet IONOS ont montr\u00e9 que les structures dendritiques obtenues par \u00e9lectro-polym\u00e9risation se comportaient comme des OECTs, et pouvaient en cons\u00e9quence moduler les signaux transmis entre deux neurones artificiels connect\u00e9s par une fibre organique. Il est alors possible de r\u00e9aliser les fonctions clefs de la plasticit\u00e9 synaptique telles que la plasticit\u00e9 \u00e0 court terme (STP) et la plasticit\u00e9 \u00e0 long terme (LTP).<br \/>\nCette approche propose un nouveau substrat mat\u00e9riel pour l\u2019impl\u00e9mentation des r\u00e9seaux de neurones artificiels et ouvre des perspectives nouvelles, tant au niveau des sciences de l\u2019ing\u00e9nierie et des syst\u00e8mes que des sciences de l\u2019information.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1546sjc-b84be913b070ffff6bb7aa2c52d8e8ab\">\n.flex_column.av-1546sjc-b84be913b070ffff6bb7aa2c52d8e8ab{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1546sjc-b84be913b070ffff6bb7aa2c52d8e8ab av_one_full  avia-builder-el-11  el_after_av_one_half  el_before_av_one_full  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kwq52ti8-8f206f6a054d384dfab1815fc91ccd26'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><em>[1] Analog programing of conducting-polymer dendritic interconnections and control of their morphology<\/em><br \/>\n<em> Kamila Janzakova, Ankush Kumar, Mahdi Ghazal, Anna Susloparova, Yannick Coffinier, Fabien Alibart &amp; S\u00e9bastien Pecqueur, Nature Communications volume 12, 6898 (2021)<\/em><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-48606 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic2.jpg\" alt=\"\" width=\"800\" height=\"262\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic2.jpg 800w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic2-300x98.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic2-768x252.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic2-18x6.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic2-705x231.jpg 705w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ug67co-39568140b225f7ca68e2c5faee1f5e42\">\n.flex_column.av-ug67co-39568140b225f7ca68e2c5faee1f5e42{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-ug67co-39568140b225f7ca68e2c5faee1f5e42 av_one_full  avia-builder-el-13  el_after_av_one_full  el_before_av_textblock  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kwq52ti8-8f206f6a054d384dfab1815fc91ccd26'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><em>[2] Dendritic Organic Electrochemical Transistors Grown by Electropolymerization for 3D Neuromorphic Engineering<\/em><br \/>\n<em>Kamila Janzakova, Mahdi Ghazal, Ankush Kumar, Yannick Coffinier, S\u00e9bastien Pecqueur, Fabien Alibart, <strong>Advanced Sciences<\/strong>, online 29 October 2021<\/em><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-48609 size-full\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic3.jpg\" alt=\"\" width=\"800\" height=\"492\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic3.jpg 800w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic3-300x185.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic3-768x472.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic3-18x12.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/12\/dentritic3-705x434.jpg 705w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<\/div><\/section><\/div>\n<section  class='av_textblock_section av-kwq5s38x-6d891f3bd3bc1f8501552f2e9579a4d4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><div  class='avia-button-wrap av-rpqvoq-79776af9aff8ee5875b39129746fe356-wrap avia-button-left  avia-builder-el-16  el_before_av_button  avia-builder-el-first'><a href='mailto:fabien.alibart@univ-lille.fr'  class='avia-button av-rpqvoq-79776af9aff8ee5875b39129746fe356 av-link-btn avia-icon_select-yes-left-icon avia-size-small avia-position-left avia-color-silver'   aria-label=\"fabien.alibart@univ-lille.fr\"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >fabien.alibart@univ-lille.fr<\/span><\/a><\/div><br \/>\n<div  class='avia-button-wrap av-rpqvoq-f8f789c09a179e8cec78b7712e399d9a-wrap avia-button-left  avia-builder-el-17  el_after_av_button  avia-builder-el-last'><a href='mailto:sebastien.pecqueur@univ-lille.fr'  class='avia-button av-rpqvoq-f8f789c09a179e8cec78b7712e399d9a av-link-btn avia-icon_select-yes-left-icon avia-size-small avia-position-left avia-color-silver'   aria-label=\"sebastien.pecqueur@univ-lille.fr\"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >sebastien.pecqueur@univ-lille.fr<\/span><\/a><\/div><\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[297],"tags":[],"class_list":["post-48600","post","type-post","status-publish","format-standard","hentry","category-newsletter"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/48600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=48600"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/48600\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=48600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=48600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=48600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}