{"id":35961,"date":"2019-04-09T08:42:32","date_gmt":"2019-04-09T06:42:32","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=35961"},"modified":"2019-09-06T10:26:55","modified_gmt":"2019-09-06T08:26:55","slug":"soutenance-de-these-ghizlane-boussatour-caracterisation-dielectrique-et-thermique-de-films-biopolymeres-pour-lelectronique-flexible-haute-frequence","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/actualites\/soutenance-de-these-ghizlane-boussatour-caracterisation-dielectrique-et-thermique-de-films-biopolymeres-pour-lelectronique-flexible-haute-frequence.html","title":{"rendered":"Soutenance de th\u00e8se : Ghizlane Boussatour \u2013 Caract\u00e9risation di\u00e9lectrique et thermique de films biopolym\u00e8res pour l\u2019\u00e9lectronique flexible haute fr\u00e9quence"},"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_58_k7pic6rfprvx\" 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\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.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;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;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-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/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-35961'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ju9fcfcz-2457355be1516cbcc90416eacbbc6385\">\n#top .av-special-heading.av-ju9fcfcz-2457355be1516cbcc90416eacbbc6385{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-ju9fcfcz-2457355be1516cbcc90416eacbbc6385 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-ju9fcfcz-2457355be1516cbcc90416eacbbc6385 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-ju9fcfcz-2457355be1516cbcc90416eacbbc6385 av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESIS: Dielectric and thermal characterisation of biopolymer films for high-frequency flexible electronics<\/h2><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-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-68e036126b913e5028f77311dc66b825\">\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825{\ncolor:#bfbfbf;\nborder-color:#bfbfbf;\n}\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-68e036126b913e5028f77311dc66b825 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='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<h5><strong style=\"font-size: 16px;\">Ghizlane BOUSSATOUR<\/strong><\/h5>\n<p><strong>Friday 12 April 2019 at 11.00 am<br \/>\n<\/strong>IEMN Amphitheatre - Central Laboratory, Villeneuve d'Ascq<\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-628129dba2299b2ecd65ebfc92eac29d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-6  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5><strong><span style=\"color: #800000;\">Jury:<\/span><\/strong><\/h5>\n<ul>\n<li>Prof. Elodie Richalot, Universit\u00e9 Paris-Est Marne-la-Vall\u00e9e (Rapporteur)<\/li>\n<li>Dr. Genevi\u00e8ve Maz\u00e9-Merceur, CEA-CESTA Le Barp (Rapporteur)<\/li>\n<li>Prof. Denis Remiens, Universit\u00e9 Polytechnique Haut de France (Examiner)<\/li>\n<li>Dr. Antoine Diet, Universit\u00e9 Paris Sud-11 (Examiner)<\/li>\n<li>Dr. Pierre-Yves Cresson, Universit\u00e9 d'Artois (Examiner, Co-supervisor)<\/li>\n<li>Prof. Tuami Lasri, University of Lille (thesis supervisor)<\/li>\n<li>Dr. Benoit Genestie, University of Artois (Guest)<\/li>\n<\/ul>\n<h5>Summary:<\/h5>\n<p>Biopolymer materials are very popular, with a wide range of applications in many fields, where they are increasingly replacing petroleum-based polymers. Given their properties, which include biocompatibility, biodegradability, flexibility and lightness, they are attracting growing interest in the field of electronics. However, their possible integration into high-frequency electronics requires the study of important properties such as thermal conductivity and complex dielectric permittivity. In this work we focus on two biopolymers in particular, poly lactic acid (PLA) and cellulose palmitate (CP). The properties of these materials are extracted using two methods. The 3\u03c9 method for determining thermal conductivity and the two-line method for determining complex dielectric permittivity. The latter is measured over a frequency range from 0.5 to 67 GHz. These two characterisation techniques require metal lines to be made on the surface of the biopolymer films, which by their very nature do not lend themselves well to photolithography processes. Alternative processes have therefore been developed to meet this technological challenge. This experimental work is accompanied by modelling studies on both aspects, i.e. estimates of the thermal conductivity and complex dielectric permittivity of the materials investigated. Comparison of the proposed analytical and numerical models with the experimental data shows a good understanding of the problem of characterising these biopolymers.<\/p>\n<h5>Abstract:<\/h5>\n<p style=\"font-weight: 400;\">Biopolymer materials attract significant attention in many fields where they tend to replace petrosourced polymers. Thanks to their properties, such as biocompatibility, biodegradability, flexibility and lightness, biopolmyers are also increasingly used in many electronic applications. Nevertheless, their possible integration into high-frequency electronics requires the study of important properties such as thermal conductivity and dielectric complex permittivity. In this work we are interested in two biopolymers in particular, poly lactic acid (PLA) and cellulose palmitate (CP). The extraction of the properties of these materials is carried out through the implementation of two methods. The means selected are the 3\u03c9 method for the thermal conductivity and the two-line method for the dielectric complex permittivity. This latter is measured in the frequency band 0.5 - 67 GHz. These two characterization techniques require the realization of metal lines on the surface of the biopolymer films. Since biopolymers are not compatible with classical photolithography method, an alternative processes have been developed to meet this technological challenge. This experimental work is accompanied by modeling studies on both aspects, estimates of the thermal conductivity and the complex dielectric permittivity of the investigated materials. The comparison of the proposed analytical and numerical models with the experimental data shows a good understanding of the problem of characterization of these biopolymers.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":35967,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,187],"tags":[],"class_list":["post-35961","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-annonces-these"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/35961","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=35961"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/35961\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/35967"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=35961"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=35961"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=35961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}