{"id":55323,"date":"2023-02-03T15:47:26","date_gmt":"2023-02-03T13:47:26","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=55323"},"modified":"2023-02-03T15:47:26","modified_gmt":"2023-02-03T13:47:26","slug":"these-ziani-z-localisation-et-propagation-non-lineaire-de-modes-plasmons-de-surface-dans-des-nanostructures-metalliques","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/these\/these-2021\/these-ziani-z-localisation-et-propagation-non-lineaire-de-modes-plasmons-de-surface-dans-des-nanostructures-metalliques.html","title":{"rendered":"THESE : ZIANI Z. Localisation et propagation non-lin\u00e9aire de modes plasmons de surface dans des nanostructures m\u00e9talliques"},"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_141xfckcb8ys6\" 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-55323'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lawkmwg7-e2b61afe30133f3b2523e3488e3e4de4\">\n#top .av-special-heading.av-lawkmwg7-e2b61afe30133f3b2523e3488e3e4de4{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-lawkmwg7-e2b61afe30133f3b2523e3488e3e4de4 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-lawkmwg7-e2b61afe30133f3b2523e3488e3e4de4 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-lawkmwg7-e2b61afe30133f3b2523e3488e3e4de4 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\"  >THESE : ZIANI Z. Localisation et propagation non-lin\u00e9aire de modes plasmons de surface dans des nanostructures m\u00e9talliques <\/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<p><strong>Z. ZIANI<br \/>\n<\/strong><\/p>\n<p>Soutenance : 15 Juillet 2021<strong><br \/>\n<\/strong>Th\u00e8se de doctorat en Electronique, photonique, Universit\u00e9 de Lille.<\/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>Summary:<\/h5>\n<p>La plasmonique non lin\u00e9aire est un domaine largement inexplor\u00e9 et seules quelques interactions non lin\u00e9aires dans les nanostructures m\u00e9talliques ont \u00e9t\u00e9 \u00e9tudi\u00e9es jusqu&rsquo;\u00e0 pr\u00e9sent. Ces travaux de th\u00e8se portent sur l&rsquo;apparition de modes plasmons de surface non lin\u00e9aire dans des nanostructures m\u00e9talliques (dim\u00e8re, cha\u00eenes de nanoparticules) ins\u00e9r\u00e9es dans une matrice di\u00e9lectrique, et soumis \u00e0 l&rsquo;action d&rsquo;une source \u00e9lectromagn\u00e9tique externe de type onde plane. Une non-lin\u00e9arit\u00e9 de type Kerr largement rencontr\u00e9 dans les milieux optiques est incluse dans la r\u00e9ponse du m\u00e9tal et le couplage dip\u00f4le-dip\u00f4le entre les nanoparticules est consid\u00e9r\u00e9e. Dans le cas d&rsquo;un nano-dim\u00e8re, apr\u00e8s avoir \u00e9tudi\u00e9 la nature des solutions non lin\u00e9aires ainsi que leur stabilit\u00e9, nous avons mis en \u00e9vidence l&rsquo;\u00e9mergence des dynamiques riches et complexes, et nous avons \u00e9tudi\u00e9 en particulier l&rsquo;apparition du chaos. Bien qu&rsquo;il semble \u00eatre al\u00e9atoire, il se produit dans un syst\u00e8me d\u00e9terministe non lin\u00e9aire dans des conditions d\u00e9terministes. L&rsquo;existence de la route famili\u00e8re de d\u00e9doublement de p\u00e9riode conduisant au chaos est mise en \u00e9vidence, et les domaines correspondant \u00e0 l&rsquo;apparition de doublement de p\u00e9riode et de chaos dans le plan des param\u00e8tres sont mis en \u00e9vidence. Dans le cas d&rsquo;une cha\u00eene de nanoparticules m\u00e9talliques unidimensionnelle, le m\u00e9canisme de l&rsquo;instabilit\u00e9 modulationnelle, qui est responsable de l&rsquo;amplification exponentielle de faibles perturbations et qui est due \u00e0 la non-lin\u00e9arit\u00e9 du m\u00e9tal, nous a permet d&rsquo;observer plusieurs dynamiques spatio-temporelle. Le spectre de Lyapunov nous a permis d&rsquo;identifier le comportement complexe observ\u00e9 comme chaos spatio-temporel. Nous avons montr\u00e9 que dans le r\u00e9gime hautement non lin\u00e9aire, le chaos spatio-temporel est robuste et existe dans une large gamme de param\u00e8tres.<\/p>\n<h5>Abstract:<\/h5>\n<p>Nonlinear plasmonics is a largely unexplored field and only a few nonlinear interactions in metallic nanostructures have been studied so far. This thesis work focuses on the appearance of nonlinear surface plasmon modes in metallic nanostructures (dimer, nanoparticle chains) inserted in a dielectric matrix, and subjected to the action of an external electromagnetic source of plane wave type. A Kerr-type nonlinearity widely encountered in optical media is included in the metal response and the dipole-dipole coupling between the nanoparticles is considered. In the case of a nano-dimer, after having studied the nature of the nonlinear solutions as well as their stability, we have highlighted the emergence of rich and complex dynamics, and we have studied in particular the appearance of chaos. Although it seems to be random, it occurs in a deterministic nonlinear system under deterministic conditions. The existence of the familiar period splitting route leading to chaos is demonstrated, and the domains corresponding to the occurrence of period splitting and chaos in the parameter plane are highlighted. In the case of a one-dimensional metal nanoparticle chain, the mechanism of modulational instability, which is responsible for the exponential amplification of small perturbations and which is due to the nonlinearity of the metal, has allowed us to observe several space-time dynamics. The Lyapunov spectrum allowed us to identify the observed complex behavior as space-time chaos. We have shown that in the highly nonlinear regime, the space-time chaos is robust and exists in a wide range of parameters.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[317],"tags":[],"class_list":["post-55323","post","type-post","status-publish","format-standard","hentry","category-these-2021"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/55323","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\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=55323"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/55323\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=55323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=55323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=55323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}