{"id":129646,"date":"2018-02-20T09:42:45","date_gmt":"2018-02-20T09:42:45","guid":{"rendered":"https:\/\/\/peau-electronique-pouvant-etre-guerie-entierement-recyclable\/"},"modified":"2018-02-20T09:42:45","modified_gmt":"2018-02-20T09:42:45","slug":"peau-electronique-pouvant-etre-guerie-entierement-recyclable","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/peau-electronique-pouvant-etre-guerie-entierement-recyclable\/","title":{"rendered":"Peau \u00e9lectronique pouvant \u00eatre gu\u00e9rie, enti\u00e8rement recyclable"},"content":{"rendered":"<p><span id=\"result_box\" lang=\"fr\"><span title=\"The sensing skin derives its recyclability from the basic four ingredients of its chemistry, three commercially available compounds (terephthalaldehyde, diethylenetriamine, and tris(2-aminoethyl)amine) mixed in ethanol and cross-linking into polyimine.\">Cette peau de d\u00e9tection tire sa recyclabilit\u00e9 des quatre ingr\u00e9dients de base de sa chimie, trois compos\u00e9s disponibles dans le commerce (t\u00e9r\u00e9phtalald\u00e9hyde, di\u00e9thyl\u00e8netriamine et tris (2-amino\u00e9thyl) amine) m\u00e9lang\u00e9s dans de l&rsquo;\u00e9thanol et r\u00e9ticulation en polyimine. <\/span><span title=\"The paper &quot;Rehealable, fully recyclable, and malleable electronic skin enabled by dynamic covalent thermoset nanocomposite&quot; published in the Science Advances explains how the e-skin can be fully depolymerized and recycled because of the reversible bond exchange between these different compounds under certain chemical environments\">L&rsquo;article \u00abPeau \u00e9lectronique gu\u00e9rissable, enti\u00e8rement recyclable et mall\u00e9able gr\u00e2ce au nanocomposite thermodurcissable dynamique covalent\u00bb publi\u00e9 dans Science Advances explique comment la peau \u00e9lectronique peut \u00eatre enti\u00e8rement d\u00e9polym\u00e9ris\u00e9e et recycl\u00e9e gr\u00e2ce \u00e0 l&rsquo;\u00e9change de liaisons r\u00e9versibles entre ces diff\u00e9rents compos\u00e9s dans certains environnements chimiques <\/span><span title=\".\">.<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"image\" style=\"float:left\"><img decoding=\"async\" alt=\"\" height=\"121\" data-src=\"http:\/\/www.eenewseurope.com\/sites\/default\/files\/images\/01-picture-library\/eenews\/2018\/flexible-eskin2.jpg\" width=\"320\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 320px; --smush-placeholder-aspect-ratio: 320\/121;\" \/><figcaption>L&rsquo;e-peau peut \u00eatre enti\u00e8rement recycl\u00e9e dans une solution, ce qui donne<br \/>\ndes oligom\u00e8res \/ monom\u00e8res dissous et AgNPs au fond.<br \/>\nLa solution et les AgNPs peuvent ensuite \u00eatre r\u00e9utilis\u00e9s<br \/>\nfaire une nouvelle e-peau.<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p><span id=\"result_box\" lang=\"fr\"><span title=\"Unlike conventional thermoset materials that cannot be reprocessed, reshaped, and recycled because of their highly cross-linked polymeric networks connected with irreversible covalent bonds, the links in the polyimine can be broken in solution and all its original constituents recycled.\">Contrairement aux mat\u00e9riaux thermodurcissables classiques qui ne peuvent pas \u00eatre retrait\u00e9s, remodel\u00e9s et recycl\u00e9s \u00e0 cause de leurs r\u00e9seaux polym\u00e8res fortement r\u00e9ticul\u00e9s li\u00e9s \u00e0 des liaisons covalentes irr\u00e9versibles, les liaisons dans la polyimine peuvent \u00eatre rompues en solution et tous ses constituants d&rsquo;origine recycl\u00e9s. <\/span><span title=\"All it takes is to soak the e-skin into ethanol and diethylenetriamine.\">Tout ce qu&rsquo;il faut, c&rsquo;est tremper la peau \u00e9lectronique dans l&rsquo;\u00e9thanol et la di\u00e9thyl\u00e8netriamine. <\/span><span title=\"&quot;The stoichiometric balance between aldehyde and amine groups (their reaction forming the imine linkage) within the polyimine network can be upset by introducing an excess of free primary amine groups (for example, excess diamine monomer)&quot; reads the paper, explaining the depolymerization and\">\u00ab\u00a0L&rsquo;\u00e9quilibre stoechiom\u00e9trique entre les groupes ald\u00e9hyde et amine (leur r\u00e9action formant la liaison imine) dans le r\u00e9seau polyimine peut \u00eatre perturb\u00e9 par l&rsquo;introduction d&rsquo;un exc\u00e8s de groupes amine primaire libres (par exemple, exc\u00e8s de diamine monom\u00e8re)\u00a0\u00bb, explique la d\u00e9polym\u00e9risation et <\/span><span title=\"showing a sample e-skin sensor being dissolved in a test tube, with the silver nanoparticles sinking to the bottom.\n\n\">montrant un \u00e9chantillon de capteur e-peau \u00e9tant dissous dans un tube \u00e0 essai, avec les nanoparticules d&rsquo;argent coulant vers le bas.<\/span><\/span><\/p>\n<p><span id=\"result_box\" lang=\"fr\"><span title=\"Going full circle, the researchers prove they are able to completely reuse the recycled solution and nanoparticles by simply adding and mixing the other two compounds (terephthalaldehyde, diethylenetriamine, and tris(2-aminoethyl)amine)) in stoichiometric proportions, together with additional silver\">En boucle, les chercheurs prouvent qu&rsquo;ils sont capables de r\u00e9utiliser compl\u00e8tement la solution recycl\u00e9e et les nanoparticules en ajoutant et en m\u00e9langeant simplement les deux autres compos\u00e9s (t\u00e9r\u00e9phtalald\u00e9hyde, di\u00e9thyl\u00e8netriamine et tris (2-amino\u00e9thyl) amine)) dans des proportions stoechiom\u00e9triques, avec deS&nbsp;<\/span><span title=\"nanoparticles.\">nanoparticules<\/span><\/span><span lang=\"fr\"><span title=\"Going full circle, the researchers prove they are able to completely reuse the recycled solution and nanoparticles by simply adding and mixing the other two compounds (terephthalaldehyde, diethylenetriamine, and tris(2-aminoethyl)amine)) in stoichiometric proportions, together with additional silver\"> D&rsquo;argent suppl\u00e9mentaire <\/span><span title=\"nanoparticles.\">. <\/span><span title=\"After polymerization, the conductive polyimine can be used to fabricate new devices.\">Apr\u00e8s la polym\u00e9risation, la polyimine conductrice peut \u00eatre utilis\u00e9e pour fabriquer de nouveaux dispositifs.<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"image\"><img decoding=\"async\" alt=\"\" height=\"431\" data-src=\"http:\/\/www.eenewseurope.com\/sites\/default\/files\/images\/01-picture-library\/eenews\/2018\/flexible-eskin3.jpg\" width=\"550\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 550px; --smush-placeholder-aspect-ratio: 550\/431;\" \/><figcaption>En boucle, un film polyimin\u00e9 conducteur reliant un simple circuit LED est en cours de recyclage. La LED s&rsquo;\u00e9teint lorsque le polym\u00e8re se d\u00e9compose dans ses oligom\u00e8res \/ monom\u00e8res d&rsquo;origine (en haut \u00e0 droite). La solution recycl\u00e9e est ensuite coul\u00e9e dans une nouvelle bo\u00eete de Petri carr\u00e9e (en bas \u00e0 droite). Apr\u00e8s la polym\u00e9risation, le film est conducteur et la LED s&rsquo;allume (en bas \u00e0 gauche).<\/figcaption><\/figure>\n<p><span id=\"result_box\" lang=\"fr\"><span title=\"The full circle demonstration performed at room temperature took the shape of a conductive polymer in a petri dish, completing a simple lighting circuit connected to a LED.\">La d\u00e9monstration en boucle ferm\u00e9e r\u00e9alis\u00e9e \u00e0 temp\u00e9rature ambiante a pris la forme d&rsquo;un polym\u00e8re conducteur dans une bo\u00eete de P\u00e9tri, compl\u00e9tant un simple circuit d&rsquo;\u00e9clairage reli\u00e9 \u00e0 une LED. <\/span><span title=\"As the recycling solution was poured into the petri dish, the polymer decomposed and the nanoparticles collapsed to the bottom of the dish, the LED light turned off.\">Lorsque la solution de recyclage a \u00e9t\u00e9 vers\u00e9e dans la bo\u00eete de P\u00e9tri, le polym\u00e8re s&rsquo;est d\u00e9compos\u00e9 et les nanoparticules se sont effondr\u00e9es au fond de la bo\u00eete, la LED s&rsquo;est \u00e9teinte. <\/span><span title=\"Adding the compounds and silver nanoparticles resulted in a novel polymerization, yielding a conductive film and a lit LED.\n\n\">L&rsquo;ajout des compos\u00e9s et des nanoparticules d&rsquo;argent a abouti \u00e0 une nouvelle polym\u00e9risation, donnant un film conducteur et une LED allum\u00e9e.<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span id=\"result_box\" lang=\"fr\"><span title=\"Healing a cracked device essentially consists in applying a drop of the initial mixture (doped with AgNPs if there is a conductive trace to be mended) onto the crack and heat pressing it so the new oligomers\/polymers grow across the broken surfaces.\">La cicatrisation d&rsquo;un dispositif fissur\u00e9 consiste essentiellement \u00e0 appliquer une goutte du m\u00e9lange initial (dop\u00e9 avec des AgNPs s&rsquo;il y a une trace conductrice \u00e0 r\u00e9parer) sur la fissure et \u00e0 la presser pour que les nouveaux oligom\u00e8res \/ polym\u00e8res croissent sur les surfaces cass\u00e9es. <\/span><span title=\"The end result is indistinguishable from the original, with the exact same electrical properties.\">Le r\u00e9sultat final est indiscernable de l&rsquo;original, avec exactement les m\u00eames propri\u00e9t\u00e9s \u00e9lectriques.<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p><span id=\"result_box\" lang=\"fr\"><span title=\"About the sensors\n\n\">A propos des capteurs<\/span><\/p>\n<p><span title=\"On this recycle e-skin, tactile sensing is based on the capacitance change between two conductive element arrays (in grey) separated by a dielectric polymer ring array (purple ring array in the illustration), so both force and position can be detected across the\">Sur cette e-peau recyclable, la d\u00e9tection tactile est bas\u00e9e sur le changement de capacit\u00e9 entre deux r\u00e9seaux d&rsquo;\u00e9l\u00e9ments conducteurs (en gris) s\u00e9par\u00e9s par un r\u00e9seau de di\u00e9lectriques en polym\u00e8re (r\u00e9seau en anneau violet sur l&rsquo;illustration), afin que la force et la position puissent \u00eatre d\u00e9tect\u00e9es sur tout le r\u00e9seau<\/span><span title=\"array.\n\">.<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<figure class=\"image\" style=\"float:left\"><img decoding=\"async\" alt=\"\" height=\"381\" data-src=\"http:\/\/www.eenewseurope.com\/sites\/default\/files\/images\/01-picture-library\/eenews\/2018\/flexible-eskin4.jpg\" width=\"300\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/381;\" \/><figcaption><\/figcaption><\/figure>\n<p><span id=\"result_box\" lang=\"fr\"><span title=\"A serpentine-shaped conductive track (made of AgNP-doped polyimine) can also be monitored to detect temperature (the track's resistance changes linearly with temperature between 24\u00b0 and 54\u00b0C).\">Une piste conductrice en forme de serpentin (en polyimine dop\u00e9e AgNP) peut \u00e9galement \u00eatre utilis\u00e9e pour d\u00e9tecter la temp\u00e9rature (la r\u00e9sistance de la piste change lin\u00e9airement avec la temp\u00e9rature entre 24 \u00b0 et 54 \u00b0 C). <\/span><span title=\"With a longer track, humidity can be sensed too.\">Avec une piste plus longue, l&rsquo;humidit\u00e9 peut \u00eatre d\u00e9tect\u00e9e aussi. <\/span><span title=\"As water molecules diffuse into the sensor, the polymer network expands, leading to a measurable increase of the sensor resistance.\n\n\">\u00c0 mesure que les mol\u00e9cules d&rsquo;eau diffusent dans le capteur, le r\u00e9seau de polym\u00e8re se dilate, ce qui entra\u00eene une augmentation mesurable de la r\u00e9sistance du capteur.<\/span><\/span><\/p>\n<p><span id=\"result_box\" lang=\"fr\"><span title=\"As for the water flow sensor, very similar in shape to the temperature sensor, it can sense flow rates between 0 and 10 m\/s (due to the flow's cooling effect on the resistor).\">Quant au capteur de d\u00e9bit d&rsquo;eau, de forme tr\u00e8s similaire au capteur de temp\u00e9rature, il peut d\u00e9tecter des d\u00e9bits compris entre 0 et 10 ml \/ s ( par l&rsquo;effet de refroidissement du flux sur la r\u00e9sistance). <\/span><span title=\"Beyond 10ml\/s, its resistance no longer changed with increasing flow rate.\n\n\">Au-del\u00e0 de 10 ml \/ s, sa r\u00e9sistance ne change plus avec l&rsquo;augmentation du d\u00e9bit.<\/span><\/span><\/p>\n<p><span id=\"result_box\" lang=\"fr\"><span title=\"All four sensors were made out of serpentine structures so they would flexibly conform to any shape when their substrate is slightly heated and pressed.\">Les quatre capteurs \u00e9taient fabriqu\u00e9s \u00e0 partir de structures serpentines, de sorte qu&rsquo;ils s&rsquo;adaptent de fa\u00e7on flexible \u00e0 n&rsquo;importe quelle forme lorsque leur substrat est l\u00e9g\u00e8rement chauff\u00e9 et press\u00e9. <\/span><span title=\"The tactile sensor was characterized with a sensitivity of 0.0067 kPa\u22121 in the 0 to 14g range, the temperature sensor was sensitive down to 0.17%\u00b0C\u22121 with a detection limit below 60\u00baC, and the average sensitivity of the humidity sensor was 0.22\">Le capteur tactile a \u00e9t\u00e9 caract\u00e9ris\u00e9 avec une sensibilit\u00e9 de 0,0067 kPa-1 dans la gamme 0 \u00e0 14g, le capteur de temp\u00e9rature \u00e9tait sensible jusqu&rsquo;\u00e0 0,17% \u00b0 C-1 avec une limite de d\u00e9tection inf\u00e9rieure \u00e0 60\u00baC et la sensibilit\u00e9 moyenne du capteur d&rsquo;humidit\u00e9 \u00e9tait de 0,22 <\/span><span title=\"%\/% with an upper limit of detection about 80 to 90%.\n\">% par pourcentage avec une limite sup\u00e9rieure de d\u00e9tection d&rsquo;environ 80 \u00e0 90%.<\/span><br \/>\n<span title=\"The e-skin can be easily conformed onto curved surfaces by applying moderate heat and pressure, with serpentine structures adopted to minimize the influence of strains on the performance of the sensors.\n\n\">Cette peau \u00e9lectronique peut \u00eatre facilement \u00eatre appliqu\u00e9e sur des surfaces incurv\u00e9es en appliquant une chaleur et une pression mod\u00e9r\u00e9es, avec des structures serpentines adapt\u00e9es pour minimiser l&rsquo;influence des contraintes sur les performances des capteurs.<\/span><\/p>\n<p><span title=\"According to the researchers, the recyclability of such an e-skin could greatly reduce electronic waste and environmental impact while potentially decreasing manufacturing cost for a wide range of applications in robotics, prosthetics, health monitoring, and biomedical devices.\">Selon les chercheurs, la recyclabilit\u00e9 d&rsquo;une telle e-peau pourrait r\u00e9duire consid\u00e9rablement les d\u00e9chets \u00e9lectroniques et l&rsquo;impact environnemental tout en r\u00e9duisant potentiellement les co\u00fbts de fabrication pour une large gamme d&rsquo;applications en robotique, proth\u00e8ses, surveillance de la sant\u00e9 et dispositifs biom\u00e9dicaux.<\/span><\/span><\/p>\n<figure class=\"image\" style=\"float:right\"><img decoding=\"async\" alt=\"\" height=\"240\" data-src=\"http:\/\/www.eenewseurope.com\/sites\/default\/files\/images\/01-picture-library\/eenews\/2018\/flexible-eskin1.jpg\" width=\"330\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 330px; --smush-placeholder-aspect-ratio: 330\/240;\" \/><figcaption>La peau \u00e9lectronique mall\u00e9able peut \u00eatre mont\u00e9e sur un bras humain.<br \/>\nCr\u00e9dit: Jianliang Xiao \/ Universit\u00e9 du Colorado Boulder.<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>La r\u00e9daction vous conseille aussi:<\/strong><\/p>\n<p><a href=\"http:\/\/www.electronique-eci.com\/news\/batterie-etirable-imprimee\"><strong>Batterie \u00e9tirable imprim\u00e9e<\/strong><\/a><\/p>\n<p><a href=\"http:\/\/www.electronique-eci.com\/node\/79156\"><strong>Pistes \u00e9lectriques d\u00e9formables et \u00e9tirables<\/strong><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Related articles in English:<\/strong><\/p>\n<p><a href=\"http:\/\/www.eenewseurope.com\/news\/graphene-based-e-skin-detects-vibrations-audio-ultrasound\">Graphene-based e-skin detects vibrations from audio to ultrasound<\/a><\/p>\n<p><a href=\"http:\/\/www.eenewseurope.com\/news\/gold-nanomesh-enables-ultra-breathable-skin-electronics\">Gold nanomesh enables ultra-breathable skin electronics<\/a><\/p>\n<p><a href=\"http:\/\/www.eenewseurope.com\/news\/transparent-capacitive-touch-sensor-flexes-stretches-and-detects-3d-shapes\">Transparent capacitive touch sensor flexes, stretches and detects 3D shapes<\/a><\/p>\n<p><a href=\"http:\/\/www.eenewseurope.com\/news\/solution-based-fabrication-techniques-flex-and-stretch-electronics\">Solution-based fabrication techniques for flex and stretch electronics<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>En mettant l&rsquo;accent sur la recyclabilit\u00e9, les chercheurs de l&rsquo;Universit\u00e9 de Boulder, Colorado ont mis au point une e-peau mall\u00e9able dont la chimie de base est enti\u00e8rement r\u00e9versible en mol\u00e9cules et m\u00e9taux r\u00e9utilisables. Compos\u00e9 de polyimine pour ses parties di\u00e9lectriques, et de polyimine dop\u00e9e avec des nanoparticules d&rsquo;argent (AgNPs) pour ses parties conductrices, la peau \u00e9lectronique est capable de d\u00e9tecter le toucher, la temp\u00e9rature, le d\u00e9bit et l&rsquo;humidit\u00e9.<\/p>\n","protected":false},"author":22,"featured_media":129647,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[883],"tags":[902,910],"domains":[47],"ppma_author":[1149],"class_list":["post-129646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologies","tag-flexibleelectronics-fr","tag-sensing-conditioning-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Peau \u00e9lectronique pouvant \u00eatre gu\u00e9rie, enti\u00e8rement recyclable ...<\/title>\n<meta name=\"description\" content=\"En mettant l&#039;accent sur la recyclabilit\u00e9, les chercheurs de l&#039;Universit\u00e9 de Boulder, Colorado ont mis au point une e-peau mall\u00e9able dont la chimie de base...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/129646\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Peau \u00e9lectronique pouvant \u00eatre gu\u00e9rie, enti\u00e8rement recyclable\" \/>\n<meta property=\"og:description\" content=\"En mettant l&#039;accent sur la recyclabilit\u00e9, les chercheurs de l&#039;Universit\u00e9 de Boulder, Colorado ont mis au point une e-peau mall\u00e9able dont la chimie de base est enti\u00e8rement r\u00e9versible en mol\u00e9cules et m\u00e9taux r\u00e9utilisables. Compos\u00e9 de polyimine pour ses parties di\u00e9lectriques, et de polyimine dop\u00e9e avec des nanoparticules d&#039;argent (AgNPs) pour ses parties conductrices, la peau \u00e9lectronique est capable de d\u00e9tecter le toucher, la temp\u00e9rature, le d\u00e9bit et l&#039;humidit\u00e9.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/129646\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2018-02-20T09:42:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/sites\/default\/files\/images\/flexible-eskin1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"771\" \/>\n\t<meta property=\"og:image:height\" content=\"560\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"eeNews Europe\" \/>\n<meta name=\"twitter:card\" 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