{"id":48069,"date":"2021-10-20T14:50:01","date_gmt":"2021-10-20T12:50:01","guid":{"rendered":"https:\/\/www.iemn.fr\/articles-temporaires-anglais\/master-thesis-position-using-strong-coupling-to-detect-gas-traces-in-the-thz-4.html"},"modified":"2021-10-22T10:10:59","modified_gmt":"2021-10-22T08:10:59","slug":"master-thesis-position-using-strong-coupling-to-detect-gas-traces-in-the-thz-4","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/2nd_pages\/2nd-offres-demplois\/master-thesis-position-using-strong-coupling-to-detect-gas-traces-in-the-thz-4.html","title":{"rendered":"Master thesis position: Bridging optical trapping and dielectrophoresis, across the terahertz gap"},"content":{"rendered":"<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ljsub1-aaf3492137d78ccefcf73193c289cd97\">\n.flex_column.av-ljsub1-aaf3492137d78ccefcf73193c289cd97{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-ljsub1-aaf3492137d78ccefcf73193c289cd97 av_three_fourth  avia-builder-el-0  el_before_av_one_fourth  avia-builder-el-first  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-kuzj5bxs-db864237ce5f7fe599915530862318d1'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h3 style=\"text-align: center;\">Master thesis position: Bridging optical trapping and dielectrophoresis, across the terahertz gap<\/h3>\n<hr \/>\n<p><strong>Context:<br \/>\n<\/strong>2018 Physics Nobel Prize has been awarded to A. Ashkin \" for the optical tweezers and their application to biological systems. OT's have now become indispensable in the biophysicists' toolkit. It allows label free experiments on single cells leading to several breakthroughs in biology such as measuring the force of flagella of a bacteria or understanding DNA structure or RNA transcription by grafting them to a \u00b5-bead. However, the investigation of systems at smaller scales is hindered by optical diffraction that limits the focusing and the subsequent optical forces. For this reason, the extension of free space OT below 50 nm, at visible wavelengths, for a dielectric target and biology compliant power, is extremely difficult.<\/p>\n<p><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/10\/image-Optra.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-48100 aligncenter\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/10\/image-Optra-300x92.jpg\" alt=\"\" width=\"368\" height=\"113\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/10\/image-Optra-300x92.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/10\/image-Optra-18x6.jpg 18w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/10\/image-Optra-495x153.jpg 495w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2021\/10\/image-Optra.jpg 500w\" sizes=\"auto, (max-width: 368px) 100vw, 368px\" \/><\/a><\/p>\n<p><span style=\"color: #808080;\"><em>Figure: Left typical aimed metasurface , middle schematic of the cross section of the targeted sample, right THz optical setup<\/em><\/span><\/p>\n<p><strong>Objective:<\/strong><br \/>\nDuring this internship, we will propose a novel approach aiming at using longer wavelengths to rap smaller objects. Though it looks counterintuitive, in the Terahertz range, metals absorb 2 to 3 orders of magnitude less in the THz than in the visible or infrared ranges. Thus, they transduce light into heat 100 to 1000 time less giving rise to much weaker competitive forces and thus allow to use lasers that are more powerful. In this work, we will take the full benefit of these properties of metal to enable optical trapping in TeraHertz plasmonic metasurfaces where the photonic mode will be shrunk to a few \u00b5m^3. The consequent huge gradient field will induce as huge optical force without the drawback of the thermal perturbation and thus better trapping. We aim at establishing a novel state of the art for optical trapping thanks to this approach.<\/p>\n<p><strong>Mission statement:<\/strong><br \/>\nThe proposed work includes a simulation part where the student will design the trap. It will be followed by a fabrication part exploiting the \u00b5 and nano fabrication facilities at IEMN. Then, the main part will use the optical trapping set up to perform the experiment and evaluate quantitatively the trapping. A data analysis will follow.<\/p>\n<p><strong>Environment:<\/strong><br \/>\nThe student will work with a team of experienced researchers in the THz-Photonics group at IEMN Laboratory (https:\/\/photoniquethz.univ-lille.fr\/en\/). The group has a long lasting experience in the conception and realization of THz optoelectronic devices, and is fully equipped to carry out this project. The Laboratory hosts a 1500m2 clean-room with state of the art growth and fabrication facilities. IEMN is located in Lille, the capital of French Flanders, a vibrant city close to the Belgian border at 50 min by train from Paris-CDG airport.<br \/>\nWe are looking for a physics or engineering master student or equivalent. Having one of the following skills would greatly increase the chance of success of any application: <em>Experimental optics - Electromagnetism - Photonic simulation - Micro-nano fabrication<\/em><br \/>\nThe exact tasks in which the student will be involved will be discussed together with him\/her and the team and will depend on its capacities and taste as the needs of the team. We strongly advise any potential candidate to contact us by email or elsewhere to begin the discussion before any formal application.<\/p>\n<p><strong>Key words:<\/strong> TeraHertz, Optical Trapping, Plasmonics, Metasurfaces, Microfluidics<\/p>\n<p><strong>Possibility to go on with a PhD?<\/strong><br \/>\nYes, we are looking for two PhD student in the group next year one of them will have to deal with a really close subject.<\/p>\n<p><strong>Envisaged fellowship?<\/strong><br \/>\nWe already applied for several nationwide and European grants but the safest funding way will be to get a university of Lille grant. We are highly supported by the university and the chance of success are very high in this call for a good candidate.<\/p>\n<\/div><\/section><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-vbhlcd-13ef1f3987ed89be461ee0f4f68c4a4b\">\n.flex_column.av-vbhlcd-13ef1f3987ed89be461ee0f4f68c4a4b{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-vbhlcd-13ef1f3987ed89be461ee0f4f68c4a4b av_one_fourth  avia-builder-el-2  el_after_av_three_fourth  avia-builder-el-last  flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-kuzj8c92-2581b5b8ca48785ecca5bb4051d23927'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div class=\"detailRight\">\n<p><span class=\"intertitre1\"><strong><a href=\"..\/wp-content\/uploads\/2019\/04\/img_emploi2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35736 alignnone\" src=\"..\/wp-content\/uploads\/2019\/04\/img_emploi2.jpg\" alt=\"\" width=\"246\" height=\"256\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/04\/img_emploi2.jpg 246w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/04\/img_emploi2-36x36.jpg 36w\" sizes=\"auto, (max-width: 246px) 100vw, 246px\" \/><\/a><br \/>\n<\/strong><\/span><\/p>\n<p><strong>Host Unit:<\/strong><br \/>\n<span class=\"texte_courant\">IEMN UMR CNRS 8520<br \/>\n<\/span><span class=\"texte_courant\">Micro and Nano Manufacturing Center<br \/>\n<\/span><span class=\"texte_courant\">Avenue Poincar\u00e9<\/span><br \/>\n<span class=\"texte_courant\">59652 VILLENEUVE D'ASCQ CEDEX<br \/>\n<a href=\"http:\/\/www.iemn.univ-lille1.fr\" target=\"_blank\" rel=\"noopener noreferrer\">www.iemn.fr<\/a><\/span><\/p>\n<p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-9a9f1cfb2a3570afb0f44a0c4adce97a\">\n.av_font_icon.av-13ewzjw-9a9f1cfb2a3570afb0f44a0c4adce97a{\ncolor:#800000;\nborder-color:#800000;\n}\n.av_font_icon.av-13ewzjw-9a9f1cfb2a3570afb0f44a0c4adce97a .av-icon-char{\nfont-size:30px;\nline-height:30px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-9a9f1cfb2a3570afb0f44a0c4adce97a 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='\ue871' data-av_iconfont='entypo-fontello' ><\/span><\/span>Contact: Th\u00e9o Hannotte \/ Dr Romain Peretti<\/p>\n<p><div  class='avia-button-wrap av-rpqvoq-c343d979ebfdc2b2315edfe795e265e6-wrap avia-button-left  avia-builder-el-5  el_after_av_font_icon  el_before_av_button'><a href='mailto:theo.hannotte@univ-lille.fr'  class='avia-button av-rpqvoq-c343d979ebfdc2b2315edfe795e265e6 av-link-btn avia-icon_select-yes-left-icon avia-size-small avia-position-left avia-color-silver'   aria-label=\"theo.hannotte@univ-lille.fr\"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >theo.hannotte@univ-lille.fr<\/span><\/a><\/div><br \/>\n<div  class='avia-button-wrap av-rpqvoq-6d1813174cbca2901e618d99cb1c3af8-wrap avia-button-left  avia-builder-el-6  el_after_av_button  avia-builder-el-last'><a href='mailto:romain.peretti@univ-lille.fr'  class='avia-button av-rpqvoq-6d1813174cbca2901e618d99cb1c3af8 av-link-btn avia-icon_select-yes-left-icon avia-size-small avia-position-left avia-color-silver'   aria-label=\"romain.peretti@univ-lille.fr\"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >romain.peretti@univ-lille.fr<\/span><\/a><\/div>\n<\/p>\n<\/div>\n<\/div><\/section><\/div><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-48069","post","type-post","status-publish","format-standard","hentry","category-2nd-offres-demplois"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/48069","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=48069"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/48069\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=48069"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=48069"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=48069"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}