{"id":42993,"date":"2020-06-12T12:49:47","date_gmt":"2020-06-12T10:49:47","guid":{"rendered":"https:\/\/www.iemn.fr\/portrait-de-jean-francois-robillard-2"},"modified":"2020-12-03T15:53:43","modified_gmt":"2020-12-03T13:53:43","slug":"portrait-de-jean-francois-robillard-2","status":"publish","type":"page","link":"https:\/\/www.iemn.fr\/en\/portrait-de-jean-francois-robillard-2","title":{"rendered":"Portrait of Jean-Fran\u00e7ois Robillard"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_21_1xk7hoxov32i4\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_leaf.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_leaf.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_leaf-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_leaf-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_leaf-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_leaf-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_leaf-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;background-position:0% 0%;background-repeat:no-repeat;mix-blend-mode:normal;top:231px;left:0px;height:30px;width:360px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-user-circle\" style=\"color:#f2f2f2;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>GROUPE DE RECHERCHE : MICROELEC SI<\/ls-layer><\/div><div class=\"ls-slide\" data-ls=\"duration:4000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_lille.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_lille.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_lille-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_lille-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_lille-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_lille-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_lille-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;background-position:0% 0%;background-repeat:no-repeat;mix-blend-mode:normal;top:231px;left:0px;height:30px;width:360px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-user-circle\" 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https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn_trous-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;background-position:0% 0%;background-repeat:no-repeat;mix-blend-mode:normal;top:231px;left:0px;height:30px;width:360px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-user-circle\" style=\"color:#f2f2f2;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>GROUPE DE RECHERCHE : MICROELEC SI<\/ls-layer><\/div><div class=\"ls-slide\" data-ls=\"duration:4000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn_wafer.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn_wafer.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn_wafer-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn_wafer-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn_wafer-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn_wafer-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn_wafer-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;background-position:0% 0%;background-repeat:no-repeat;mix-blend-mode:normal;top:231px;left:0px;height:30px;width:360px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-user-circle\" style=\"color:#f2f2f2;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>GROUPE DE RECHERCHE : MICROELEC SI<\/ls-layer><\/div><div class=\"ls-slide\" data-ls=\"duration:4000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/04\/groupe_microelecsi_iemn-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;background-position:0% 0%;background-repeat:no-repeat;mix-blend-mode:normal;top:231px;left:0px;height:30px;width:360px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-user-circle\" style=\"color:#f2f2f2;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>GROUPE DE RECHERCHE : MICROELEC SI<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-42993'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-a667927513c1e354ab4087135d4f14ed\">\n#top .av-special-heading.av-av_heading-a667927513c1e354ab4087135d4f14ed{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-av_heading-a667927513c1e354ab4087135d4f14ed .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-a667927513c1e354ab4087135d4f14ed .av-subheading{\nfont-size:22px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-a667927513c1e354ab4087135d4f14ed av-special-heading-h2 blockquote modern-quote modern-centered  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >Portrait of Jean-Fran\u00e7ois Robillard, teacher-researcher, Groupe Microelec Si<\/h2><div class='av-subheading av-subheading_below'><p>The alliance of pathfinder projects and teamwork<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kgbxvn7a-0371af359293a3fa180a552ecb4100d8\">\n#top .hr.hr-invisible.av-kgbxvn7a-0371af359293a3fa180a552ecb4100d8{\nheight:1px;\n}\n<\/style>\n<div  class='hr av-kgbxvn7a-0371af359293a3fa180a552ecb4100d8 hr-invisible  avia-builder-el-2  el_after_av_heading  el_before_av_one_full'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2kcctb4-414b560e777bb433e6f0bb2ecc7d6bf5\">\n.flex_column.av-2kcctb4-414b560e777bb433e6f0bb2ecc7d6bf5{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-2kcctb4-414b560e777bb433e6f0bb2ecc7d6bf5 av_one_full  avia-builder-el-3  el_after_av_hr  el_before_av_hr  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-kbgfygdl-cd03221433494470f9357b846e13b906'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>It is with fairplay and simplicity that Jean-Fran\u00e7ois has lent himself to the exercise of portraiture, which he wishes to be as objective as possible. In the midst of writing the HDR, this is a good opportunity to look back on his career as a teacher-researcher by highlighting some of the highlights of his history, while addressing the trajectory of thermoelectricity research at the IEMN.<\/p>\n<blockquote>\n<p>\"The biggest barriers are often in our heads, they don't really exist. You can't compartmentalize things in your mind, there are so many preconceived ideas, especially about academic research and industry\".<\/p>\n<\/blockquote>\n<p>This is the credo that has always guided Jean-Fran\u00e7ois until now. This reflection, based on personal conviction and, understandably, on proven experiences, can of course be applied to young graduates or young researchers, hesitating about their careers. We can add: \"not to compartmentalize universes\" is a constant source of enrichment and sharing of knowledge, which are essential values in research.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kgbxwxyn-395f5eab17c28c198fd1908d11d3a9aa\">\n#top .hr.hr-invisible.av-kgbxwxyn-395f5eab17c28c198fd1908d11d3a9aa{\nheight:1px;\n}\n<\/style>\n<div  class='hr av-kgbxwxyn-395f5eab17c28c198fd1908d11d3a9aa hr-invisible  avia-builder-el-5  el_after_av_one_full  el_before_av_one_half'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-20q057k-9c542c661b0f4d901a7ece9ef78b1af8\">\n.flex_column.av-20q057k-9c542c661b0f4d901a7ece9ef78b1af8{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-20q057k-9c542c661b0f4d901a7ece9ef78b1af8 av_one_half  avia-builder-el-6  el_after_av_hr  el_before_av_one_half  first flex_column_div av-zero-column-padding'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kbghuu2k-014708dbc866be35f90ac54094bfc887\">\n#top .avia-animated-number.av-kbghuu2k-014708dbc866be35f90ac54094bfc887 .avia-animated-number-title{\ncolor:#4ecac2;\n}\n<\/style>\n<div  class=\"avia-animated-number av-kbghuu2k-014708dbc866be35f90ac54094bfc887 av-force-default-color avia_animate_when_visible  avia-builder-el-7  el_before_av_textblock  avia-builder-el-first  avia-color-font-custom\" data-timer=\"3000\"><strong class=\"heading avia-animated-number-title\"><span class=\"avia-single-number __av-single-number\" data-number_format=\"\" data-number=\"1\" data-start_from=\"0\">1<\/span><\/strong><div class=\"avia-animated-number-content\"><p>An attraction for the 'beautiful' Physics<\/p>\n<\/div><\/div><br \/>\n<section  class='av_textblock_section av-kbgfw6dz-dd5563d974ba102365adc25a6ad84202'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><blockquote>\n<p style=\"text-align: left;\">Jean-Fran\u00e7ois has always wanted to do research, with Physics as a passion. By chance, while he was in a preparatory class for engineering schools, he discovered on a brochure the programmes of the <a href=\"http:\/\/www.google.com\/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=1&amp;cad=rja&amp;uact=8&amp;ved=2ahUKEwiMy4vV3OTdAhWhzoUKHVxNBBQQFjAAegQICRAB&amp;url=http:\/\/www.magistere-physique.u-psud.fr\/&amp;usg=AOvVaw2Z4xgmSvRAM0Kiyli2Fymc\" target=\"_blank\" rel=\"noopener noreferrer\">Orsay Fundamental Physics Magisterium<\/a> that made him dream: quantum mechanics, statistical physics, electromagnetism, ... Without hesitation, he went for it and came out three years later, in 2004, with a double Master-Magister degree! He experienced it intensely as \"a very stimulating period\".<\/p>\n<p>\"Paris-XI is a very special place, between the wooded hills are nestled so many prestigious laboratories ... so much so that nobody makes a big deal of it and you don't immediately realise the very high level of research conducted there. \"(Jean-Fran\u00e7ois)<\/p>\n<\/blockquote>\n<p>An internship at the end of his studies will orientate him permanently towards the vast field of micro- and nanotechnologies. He then worked on the study and mechanical characterization of materials (metals, dielectrics, semiconductors) used in the composition of integrated circuits, particularly in collaboration with the microelectronics industry (ST Microelectronics). He remembers it as an experimental device with \"beautiful physics\", which made him want to do a thesis in microelectronics, under the direction of Arnaud Devos, CNRS researcher at <a href=\"https:\/\/www.google.com\/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=1&amp;cad=rja&amp;uact=8&amp;ved=2ahUKEwjeg_OnjJjgAhW3DmMBHYhCAEwQFjAAegQIABAD&amp;url=https%3A%2F%2Fwww.isen.fr%2F&amp;usg=AOvVaw34-tICpQVpfFa5unU-gwn1\" target=\"_blank\" rel=\"noopener noreferrer\">ISEN\/IEMN<\/a>. The subject, \"Picosecond Ultrasonics investigation of the individual and collective vibrations in ordered nanostructures\", allowed him to extend the use of picosecond acoustics - a method for measuring elastic properties at very small size scales - to more complex and mechanically coupled nano-objects.<\/p>\n<h6><\/h6>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1kto5ds-659ebb11613f72c485357453100be755\">\n.flex_column.av-1kto5ds-659ebb11613f72c485357453100be755{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1kto5ds-659ebb11613f72c485357453100be755 av_one_half  avia-builder-el-9  el_after_av_one_half  el_before_av_one_half  flex_column_div av-zero-column-padding'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kbgi37bi-522315740085f5e3ede4ce8374f0093a\">\n#top .avia-animated-number.av-kbgi37bi-522315740085f5e3ede4ce8374f0093a .avia-animated-number-title{\ncolor:#7bb0e7;\n}\n<\/style>\n<div  class=\"avia-animated-number av-kbgi37bi-522315740085f5e3ede4ce8374f0093a av-force-default-color avia_animate_when_visible  avia-builder-el-10  el_before_av_textblock  avia-builder-el-first  avia-color-font-custom\" data-timer=\"3000\"><strong class=\"heading avia-animated-number-title\"><span class=\"avia-single-number __av-single-number\" data-number_format=\"\" data-number=\"2\" data-start_from=\"0\">2<\/span><\/strong><div class=\"avia-animated-number-content\"><p>The turning point of thematic mobility<\/p>\n<\/div><\/div><br \/>\n<section  class='av_textblock_section av-kbgfvl79-d06508e938a6e160f37d5f304b3ffd59'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><blockquote>\n<p style=\"text-align: left;\"><span style=\"font-size: 1.235em;\">After his thesis defended in 2008, he is considering doing a post-doctoral fellowship, which will be necessary for him to pursue a research career, but he prefers to postpone it to a more opportune time. Rather than changing laboratory, he changes subject, operating a \" thematic mobility \" in the direction of phononic crystals, in an approach this time more theoretical.<\/span><\/p>\n<p>He then trained on his new subject at the \u00c9cole Centrale de Lille for a year with Olivier Bou Matar in the Aiman-Films team. This team is particularly specialised in magnetostrictive materials, a property coupling magnetism and acoustics. In 2010, this leads to an article which is now quite well taken up.<\/p>\n<p><em>\"With the team, we proposed a concept of frequency tuning via the magnetic field, therefore without contact, of phononic crystals.<\/em><\/p>\n<\/blockquote>\n<p>This period truly marks the beginning of his research career, providing him with long research prospects. The expertise work on phononic crystals quickly bore fruit as Jean-Fran\u00e7ois spent a year (2009-2010) in the United States as a <strong>Research Associate in the Department of Materials Science and Engineering<\/strong>specializing in his field, in <strong>Arizona at the University of Tucson<\/strong>. This was an opportunity for him to materialize this promising theme in the form of several articles and to train as a doctoral student supervisor. He recalls a \"very intense and productive year, a great adventure\".<\/p>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1bl7p6o-5360903ea03fbc55af341fd82394e7ea\">\n.flex_column.av-1bl7p6o-5360903ea03fbc55af341fd82394e7ea{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1bl7p6o-5360903ea03fbc55af341fd82394e7ea av_one_half  avia-builder-el-12  el_after_av_one_half  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kbgi3u1s-9c7b81b0c5e55ddefebfdbce6642ff5f\">\n#top .avia-animated-number.av-kbgi3u1s-9c7b81b0c5e55ddefebfdbce6642ff5f .avia-animated-number-title{\ncolor:#83a846;\n}\n<\/style>\n<div  class=\"avia-animated-number av-kbgi3u1s-9c7b81b0c5e55ddefebfdbce6642ff5f av-force-default-color avia_animate_when_visible  avia-builder-el-13  el_before_av_textblock  avia-builder-el-first  avia-color-font-custom\" data-timer=\"3000\"><strong class=\"heading avia-animated-number-title\"><span class=\"avia-single-number __av-single-number\" data-number_format=\"\" data-number=\"3\" data-start_from=\"0\">3<\/span><\/strong><div class=\"avia-animated-number-content\"><p>Back to ISEN and ERC project<\/p>\n<\/div><\/div><br \/>\n<section  class='av_textblock_section av-kbgfqdk2-760523010a20dc74f95fb103cf1467e2'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-42740\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/10\/UPTEGb-300x249.gif\" alt=\"\" width=\"240\" height=\"199\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/10\/UPTEGb-300x249.gif 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/10\/UPTEGb-1030x856.gif 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/10\/UPTEGb-768x638.gif 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/10\/UPTEGb-705x586.gif 705w\" sizes=\"auto, (max-width: 240px) 100vw, 240px\" \/><\/p>\n<p>In 2010, Jean-Fran\u00e7ois became a <strong>permanent lecturer-researcher at ISEN\/IEMN and joined Emmanuel Dubois in the Silicon Microelectronics group (<a href=\"https:\/\/www.iemn.fr\/en\/la-recherche\/les-groupes\/microelecsi\/\">Microelec Si<\/a>) at IEMN to develop an activity around the recovery of thermoelectric energy.<\/strong><\/p>\n<p>Since his stay in the United States, Jean-Fran\u00e7ois has had the intuition that \"there is something to do with thermoelectricity\", in particular by using concepts derived from phononic crystals to make this energy conversion more efficient. The approach is new, since only two pioneering papers report such proposals that are just waiting to be developed.<br \/>\nJean-Fran\u00e7ois then formulated a <a href=\"https:\/\/www.google.com\/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=&amp;ved=2ahUKEwiPxqD1hafqAhVK8OAKHSJZCOIQFjAAegQIARAC&amp;url=https%3A%2F%2Ferc.europa.eu%2Fstarting-grants&amp;usg=AOvVaw0XbomELAW3xQ28yFc6x_nC\" target=\"_blank\" rel=\"noopener noreferrer\">Starting Grant project<\/a> with the <a href=\"https:\/\/www.horizon2020.gouv.fr\/cid72629\/erc.html\" target=\"_blank\" rel=\"noopener noreferrer\">ERC<\/a> (European Research Council) that starts in 2013. The idea is to explore this new field whose development potential is obvious but whose feasibility is not won in advance! Indeed, it is a question, no more and no less, of succeeding in transforming silicon into a thermoelectric material, which it is not naturally due to its very high thermal conduction. This very experimental project, requiring the fabrication and characterization of objects, also tackles very fundamental questions. In parallel to the ERC project, Jean-Fran\u00e7ois participates in the <a href=\"https:\/\/www.iemn.fr\/en\/les-collaborations\/les-laboratoires-communs-iemn-industrie\/#top\" target=\"_blank\" rel=\"noopener noreferrer\">Joint ST Microelectronics\/IEMN Laboratory<\/a> where he regularly supervises <a href=\"https:\/\/www.google.com\/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=&amp;cad=rja&amp;uact=8&amp;ved=2ahUKEwiw_u72xoPqAhUCaBoKHQrkDcoQFjAAegQIBhAB&amp;url=https%3A%2F%2Fwww.enseignementsup-recherche.gouv.fr%2Fcid22130%2Fles-cifre.html&amp;usg=AOvVaw0CjNAAmwflok3ol8uLwsUq\">Cifre<\/a> theses.<\/p>\n<h6><\/h6>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kc3heo-ee66e928218b0eba239701ff9f851acf\">\n.flex_column.av-kc3heo-ee66e928218b0eba239701ff9f851acf{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-kc3heo-ee66e928218b0eba239701ff9f851acf av_one_half  avia-builder-el-15  el_after_av_one_half  avia-builder-el-last  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kbgi4lbo-142ac1ff2ab5217134b516837e42cf5e\">\n#top .avia-animated-number.av-kbgi4lbo-142ac1ff2ab5217134b516837e42cf5e .avia-animated-number-title{\ncolor:#d65799;\n}\n<\/style>\n<div  class=\"avia-animated-number av-kbgi4lbo-142ac1ff2ab5217134b516837e42cf5e av-force-default-color avia_animate_when_visible  avia-builder-el-16  el_before_av_textblock  avia-builder-el-first  avia-color-font-custom\" data-timer=\"3000\"><strong class=\"heading avia-animated-number-title\"><span class=\"avia-single-number __av-single-number\" data-number_format=\"\" data-number=\"4\" data-start_from=\"0\">4<\/span><\/strong><div class=\"avia-animated-number-content\"><p>Project progress, spin-offs and prospects<\/p>\n<\/div><\/div><br \/>\n<section  class='av_textblock_section av-kbgfq55a-1d11ed083fe135d6251833918e86dbb2'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_41445\" style=\"width: 143px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/06\/Portrait-JFR-2.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-41445\" class=\"wp-image-41445\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/06\/Portrait-JFR-2-300x223.jpg\" alt=\"\" width=\"133\" height=\"99\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/06\/Portrait-JFR-2-300x223.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/06\/Portrait-JFR-2-768x571.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/06\/Portrait-JFR-2-705x524.jpg 705w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/06\/Portrait-JFR-2.jpg 907w\" sizes=\"auto, (max-width: 133px) 100vw, 133px\" \/><\/a><p id=\"caption-attachment-41445\" class=\"wp-caption-text\">Device for thermoelectric generation from nanostructured crystalline silicon. a) Membranes arranged to form a thermoelectric generator. b) Detail of the membranes, heat is injected into the center of the thermopiles. c,d,e) Visible phononic structuring on the membranes.Project progress, spin-offs and prospects<\/p><\/div>\n<p>Obtaining the UPTEG ERC project has been a tremendous gas pedal for his technologically advanced research that has led to the <strong>successful generation of thermoelectricity using silicon<\/strong>. In addition, it has enabled him to establish fruitful <strong>collaborations in particular with the Lyon Thermal and Energy Center<\/strong> (<a href=\"https:\/\/cethil.insa-lyon.fr\/\" target=\"_blank\" rel=\"noopener noreferrer\">CETHIL<\/a>).<\/p>\n<blockquote>\n<p>The IEMN has acquired experience in this field via three methods: electrothermal, Raman thermometry and near-field thermal microscopy. The marriage between micro-nanotechnologies and thermics has led to a collaborative <strong>ANR<\/strong> project <strong>TIPTOP<\/strong> to develop new sensitive detectors for thermal microscopy.<\/p>\n<\/blockquote>\n<p>The results of the ERC project, completed in 2019, are positive: six theses defended, three post-doctoral fellowships funded, about ten published articles and oral communications and five invited conferences, ... This good harvest allowed the start of new activities. In particular, Jean-Fran\u00e7ois is now working on <strong>thermal optimization in non-volatile phase change memories<\/strong> (PCRam), still within the framework of the Joint Laboratory. In addition, <strong>two ANR projects will start in 2021<\/strong>one focusing on heat transport in the quantum regime and the other on heat transfer in metal-semiconductor interfaces. This will provide food for thought at the frontiers of several disciplines ...<\/p>\n<p style=\"text-align: right;\">Writing Karine Perrot (ECM department)<\/p>\n<\/div><\/section><\/p><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-42993","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages\/42993","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"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=42993"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/pages\/42993\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=42993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}