{"id":1110,"date":"2016-12-22T09:11:38","date_gmt":"2016-12-22T08:11:38","guid":{"rendered":"https:\/\/www.mines-stetienne.fr\/en\/?page_id=1110"},"modified":"2025-02-21T11:02:20","modified_gmt":"2025-02-21T10:02:20","slug":"research-activities","status":"publish","type":"page","link":"https:\/\/www.mines-stetienne.fr\/en\/research\/centres-and-departments\/flexible-electronics-department-fel\/research-activities\/","title":{"rendered":"Research activities"},"content":{"rendered":"<p>The objectives set by the department are aimed at the development of technological bricks adapted to the realization of electronic components that are both complex, flexible or stretchable. In particular, optimization of the physicochemical and mechanical parameters that govern their implementation, as well as the realization of models and test procedures aiming to guarantee their functioning and their lifetime are the main themes of the development of the department.<\/p>\n<p>In order to prepare the electronics of the future, our activities\u00a0include 3 main axes of fundamental research that are combined towards various applications.<\/p>\n<ul>\n<li><strong>Let&#8217;s start by the applications:<\/strong><\/li>\n<\/ul>\n<p>We are developing processes and know-how in order\u00a0to manufacture\u00a0electronic objects onto flexible and stretchable substrates while keeping a high level of performance, integration, functionality and reliability. Below are some examples of devices and applications:<\/p>\n<ul>\n<li>Flexible and stretchable \u03bc-batteries<\/li>\n<\/ul>\n<div id=\"attachment_1326\" style=\"width: 474px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-1326\" class=\"wp-image-1326\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/SEM-image-microbattery-300x165.jpg\" alt=\"\" width=\"464\" height=\"255\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/SEM-image-microbattery-300x165.jpg 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/SEM-image-microbattery-768x423.jpg 768w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/SEM-image-microbattery.jpg 783w\" sizes=\"(max-width: 464px) 100vw, 464px\" \/><p id=\"caption-attachment-1326\" class=\"wp-caption-text\">SEM image of all solid state microbattery<\/p><\/div>\n<p><img decoding=\"async\" class=\"wp-image-1310 aligncenter\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2017\/04\/Electrode-stretchable-microbattery-258x300.jpg\" alt=\"\" width=\"239\" height=\"278\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2017\/04\/Electrode-stretchable-microbattery-258x300.jpg 258w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2017\/04\/Electrode-stretchable-microbattery.jpg 484w\" sizes=\"(max-width: 239px) 100vw, 239px\" \/><\/p>\n<ul>\n<li>Smart interfaces (Smart Tags, Touchpad RF, \u2026)<\/li>\n<li style=\"list-style-type: none\">\n<div id=\"attachment_1329\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-1329\" class=\"wp-image-1329 size-medium\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2017\/04\/RFID-on-paper-300x199.jpg\" alt=\"\" width=\"300\" height=\"199\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2017\/04\/RFID-on-paper-300x199.jpg 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2017\/04\/RFID-on-paper.jpg 756w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-1329\" class=\"wp-caption-text\">RFID tag on paper<\/p><\/div><\/li>\n<li>Bio-robotic (e-skin) and smart textile based on stretchable electronic<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"wp-image-1126 aligncenter\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/stretc-sesnor-300x234.png\" alt=\"stretc-sesnor\" width=\"371\" height=\"289\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/stretc-sesnor-300x234.png 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/stretc-sesnor-768x599.png 768w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/stretc-sesnor.png 1018w\" sizes=\"(max-width: 371px) 100vw, 371px\" \/><\/p>\n<p>&nbsp;<\/p>\n<div id=\"attachment_1124\" style=\"width: 370px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-1124\" class=\"wp-image-1124\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/retina-300x200.png\" alt=\"\" width=\"360\" height=\"240\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/retina-300x200.png 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/retina-768x511.png 768w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/retina-1024x681.png 1024w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/retina.png 1381w\" sizes=\"(max-width: 360px) 100vw, 360px\" \/><p id=\"caption-attachment-1124\" class=\"wp-caption-text\">Stretchable artificial retina<\/p><\/div>\n<ul>\n<li>Organic Printed Electronics<\/li>\n<\/ul>\n<p>Wearables\/ Organic bioelectronics<\/p>\n<div id=\"attachment_2165\" style=\"width: 393px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-2165\" class=\" wp-image-2165\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Wearables-organic-bioelectronics-300x147.png\" alt=\"\" width=\"383\" height=\"188\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Wearables-organic-bioelectronics-300x147.png 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Wearables-organic-bioelectronics-768x375.png 768w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Wearables-organic-bioelectronics-1024x500.png 1024w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Wearables-organic-bioelectronics.png 1334w\" sizes=\"(max-width: 383px) 100vw, 383px\" \/><p id=\"caption-attachment-2165\" class=\"wp-caption-text\">a) EMG setup, b) skin-MEAs (all IJP), c) neuromuscular cartography (EMG signals)<\/p><\/div>\n<p>Ultraflexible organic transistors &amp; CMOS circuits<\/p>\n<div id=\"attachment_2160\" style=\"width: 384px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-2160\" class=\" wp-image-2160\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Ultrafexible-transistors-and-printed-300x114.jpg\" alt=\"\" width=\"374\" height=\"142\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Ultrafexible-transistors-and-printed-300x114.jpg 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Ultrafexible-transistors-and-printed-768x291.jpg 768w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Ultrafexible-transistors-and-printed-1024x388.jpg 1024w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_Ultrafexible-transistors-and-printed.jpg 1336w\" sizes=\"(max-width: 374px) 100vw, 374px\" \/><p id=\"caption-attachment-2160\" class=\"wp-caption-text\">Ultraflexible OTFTs &amp; Inkjet Printed OTFTs<\/p><\/div>\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-1110-1\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_flexible-circuit.mp4?_=1\" \/><a href=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_flexible-circuit.mp4\">https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_flexible-circuit.mp4<\/a><\/video><\/div>\n<p>high resolution patterning (soft lithography &amp; imprint)<\/p>\n<div id=\"attachment_2159\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-2159\" class=\"size-medium wp-image-2159\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_high-resolution-patterning-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_high-resolution-patterning-300x225.jpg 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2018\/06\/Sanaur_FEL_high-resolution-patterning.jpg 708w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-2159\" class=\"wp-caption-text\">Patterned PEDOT:PSS by soft lithography<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>==&gt; Achieving these flexible \/ stretchable demonstrators requires\u00a0early stage and fundamental research activities. As a matter of fact, we are studying 3 main building blocks: Manufacture \/ deposition of nano-materials for solution process; Combined electrical \/ mechanical properties of metallic interconnections and individual component under stretch and flexion; Optimization of microbatteries.<\/p>\n<p>1. Nano Materials:<\/p>\n<ul>\n<li>Ink fabrication<\/li>\n<li>Deposition \/ patterning<\/li>\n<li>Characterization<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"size-medium wp-image-1116 aligncenter\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/ink-300x226.png\" alt=\"ink\" width=\"300\" height=\"226\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/ink-300x226.png 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/ink-768x578.png 768w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/ink-1024x771.png 1024w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/ink.png 1122w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>2. Stretchable \/ conformable electronics<\/p>\n<ul style=\"list-style-type: square\">\n<li>Various substrates<\/li>\n<li>Printing electronics<\/li>\n<li>Packaging IC<\/li>\n<li>Hybrid electronics<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"wp-image-1117 aligncenter\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/OPD-stretch-300x94.png\" alt=\"opd-stretch\" width=\"437\" height=\"137\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/OPD-stretch-300x94.png 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/OPD-stretch-768x241.png 768w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/OPD-stretch-1024x321.png 1024w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/OPD-stretch.png 1431w\" sizes=\"(max-width: 437px) 100vw, 437px\" \/><\/p>\n<p>Stretchable Organic Electrochemical Transistor:<\/p>\n<div style=\"width: 640px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-1110-2\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/20160908_142132.mp4?_=2\" \/><a href=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/20160908_142132.mp4\">https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/20160908_142132.mp4<\/a><\/video><\/div>\n<p>&nbsp;<\/p>\n<p>3.\u00a0\u00b5-batteries<\/p>\n<ul>\n<li>Solid state batteries<\/li>\n<li>Flexible micro-batteries<\/li>\n<li>Energy harvesting (thermo and triboelectricity)<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"wp-image-1335 aligncenter\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2017\/04\/microbatteyr-FEL-300x93.jpg\" alt=\"\" width=\"435\" height=\"135\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2017\/04\/microbatteyr-FEL-300x93.jpg 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2017\/04\/microbatteyr-FEL.jpg 711w\" sizes=\"(max-width: 435px) 100vw, 435px\" \/><\/p>\n<p><img decoding=\"async\" class=\"wp-image-1121 aligncenter\" src=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/batteire-300x202.png\" alt=\"batteire\" width=\"319\" height=\"215\" srcset=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/batteire-300x202.png 300w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/batteire-768x518.png 768w, https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2016\/12\/batteire.png 915w\" sizes=\"(max-width: 319px) 100vw, 319px\" \/><\/p>\n<ul class=\"toc\">\n<li><a href=\"https:\/\/www.mines-stetienne.fr\/en\/research\/scientific-departments\/flexible-electronics-department-fel\/\">Flexible electronics department homepage<\/a><\/li>\n<li><a href=\"https:\/\/www.mines-stetienne.fr\/en\/research\/scientific-departments\/flexible-electronics-department-fel\/presentation-of-the-department\/\">Presentation of the department<\/a><\/li>\n<li><a href=\"https:\/\/www.mines-stetienne.fr\/en\/research\/scientific-departments\/flexible-electronics-department-fel\/research-activities\/\">Research activities<\/a><\/li>\n<li><a href=\"https:\/\/www.mines-stetienne.fr\/en\/research\/scientific-departments\/flexible-electronics-department-fel\/publications\/\">Publications<\/a><\/li>\n<li><a href=\"https:\/\/www.mines-stetienne.fr\/en\/research\/scientific-departments\/flexible-electronics-department-fel\/people\/\">People<\/a><\/li>\n<li><a href=\"https:\/\/www.mines-stetienne.fr\/en\/research\/scientific-departments\/flexible-electronics-department-fel\/equipments\/\">Equipment<\/a><\/li>\n<li><a href=\"https:\/\/www.mines-stetienne.fr\/en\/research\/scientific-departments\/flexible-electronics-department-fel\/collaborations-and-fundings\/\">Collaborations and fundings<\/a><\/li>\n<li><a href=\"https:\/\/www.mines-stetienne.fr\/en\/research\/scientific-departments\/flexible-electronics-department-fel\/contact\/\">Contact<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The objectives set by the department are aimed at the development of technological bricks adapted to the realization of electronic components that are both complex, flexible or stretchable. In particular, optimization of the physicochemical and mechanical parameters that govern their &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":677,"menu_order":20,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"492,497,2385","_relevanssi_noindex_reason":"","footnotes":"","_links_to":"","_links_to_target":""},"tags":[40,34,37,38,36,39,41],"class_list":["post-1110","page","type-page","status-publish","hentry","tag-conformable","tag-e-skin","tag-electronique-etirable","tag-electronique-souple","tag-micro-battery","tag-stretchable-electronis","tag-textile-electronic"],"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","pp_force_visibility":null,"pp_subpost_visibility":null,"pp_inherited_force_visibility":null,"pp_inherited_subpost_visibility":null,"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Research activities - MINES Saint-\u00c9tienne<\/title>\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.mines-stetienne.fr\/en\/research\/centres-and-departments\/flexible-electronics-department-fel\/research-activities\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Research activities - MINES Saint-\u00c9tienne\" \/>\n<meta property=\"og:description\" content=\"The objectives set by the department are aimed at the development of technological bricks adapted to the realization of electronic components that are both complex, flexible or stretchable. 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