{"id":112540,"date":"2018-03-11T10:39:31","date_gmt":"2018-03-11T10:39:31","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/metamateriales-con-actividad-electromagnetica-basados-en-inserciones-metalicas-tipo-manivela\/"},"modified":"2018-03-11T10:39:31","modified_gmt":"2018-03-11T10:39:31","slug":"metamateriales-con-actividad-electromagnetica-basados-en-inserciones-metalicas-tipo-manivela","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/electromagnetismo\/metamateriales-con-actividad-electromagnetica-basados-en-inserciones-metalicas-tipo-manivela\/","title":{"rendered":"Metamateriales con actividad electromagn\u00e9tica basados en inserciones met\u00e1licas tipo manivela."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Angel Joaquin Garcia Collado <\/strong><\/h2>\n<p>En esta tesis se aborda el dise\u00f1o, implementaci\u00f3n y medida de nuevos metamateriales quirales basados en inclusiones de elementos met\u00e1licos de tipo manivela. Partiendo del comportamiento electromagn\u00e9tico de los medios quirales cl\u00e1sicos implementados mediante inclusiones en forma de h\u00e9lice, se estudia la evoluci\u00f3n hacia nuevas estructuras, no referenciadas con anterioridad, que presentan grandes ventajas sobre aquellas, de forma que se simplifica de forma notable el proceso de dise\u00f1o y fabricaci\u00f3n y, lo que es m\u00e1s interesante, mejora su respuesta electromagn\u00e9tica. para ello, y mediante el empleo de t\u00e9cnicas fundamentalmente experimentales, se ha analizado aquellos par\u00e1metros f\u00edsicos que caracterizan la actividad electromagn\u00e9tica de los medios con quiralidad: la dispersi\u00f3n \u00f3ptica rotatoria y el dicro\u00edsmo circular, observ\u00e1ndose mejoras en los dise\u00f1os iniciales que han permitido la maximizaci\u00f3n de los mismos y, a la vez, minimizar las p\u00e9rdidas asociadas. Para este fin, diversas distribuciones espaciales ordenadas y diferentes agrupamientos de manivelas han sido propuestos, lo que constituye una importante innovaci\u00f3n en este campo. se ha logrado la implementaci\u00f3n de medios que presentan una destacada respuesta quiral, lo que adem\u00e1s, ha permitido obtener en determinadas bandas de frecuencia un \u00edndice de refracci\u00f3n negativo, es decir, que el medio responda como medio zurdo. Esto se logra a partir de los elevados valores de quiralidad presentados por los medios dise\u00f1ados en este trabajo, sin necesidad de permitividad y permeabilidad simult\u00e1neamente negativas, tal y como ocurre en los medios con \u00edndice de refracci\u00f3n negativo tradicionales. metamateriales con actividad electromagn\u00e9tica basadas en inserciones met\u00e1licas tipo manivela tesis doctoral \u00c2\u00bf \u00e1ngel joaqu\u00edn garc\u00eda collado abstract the main objective of the present doctoral thesis has been: the design, implementation and measurement of new chiral metamaterials based on the inclusion of metallic cranks into a host medium. starting with the analysis of the electromagnetic behavior of classic (based on random distribution of helices) chiral media, the work continued with the study of new structures, not previously referenced, which have shown to have many advantages: the design and manufacturing processes are greatly simplified and, more important, the new structures improve the electromagnetic behavior of the devices. the evaluation of electromagnetic activity has been carried out in terms of the following physical parameters: optical rotatory dispersion and circular dichroism. Experimental and numerical analysis, used in an interlaced way, have allowed the continuous improvement of the successive designs, obtaining devices with better electromagnetic activity while having reduced losses. Different spatial distributions with different clusters of metallic cranks have been used to get the desired objectives. with the above mentioned arrangements a relevant chiral response has been achieved. This has allowed negative index of refraction (left handed metamaterials) within some frequency bands. This behavior is mainly due to the high chirality shown by the metamaterials. It is not associated to the permittivity and permeability being simultaneously negative, as occurs in traditional negative index materials.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Metamateriales con actividad electromagn\u00e9tica basados en inserciones met\u00e1licas tipo manivela.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Metamateriales con actividad electromagn\u00e9tica basados en inserciones met\u00e1licas tipo manivela. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Angel Joaquin Garcia Collado <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Murcia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 22\/03\/2012<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Jose Margineda Puigpelat<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: ernesto Martin rodriguez <\/li>\n<li>angel Vegas garcia (vocal)<\/li>\n<li>Jos\u00e9 Represa fern\u00e1ndez (vocal)<\/li>\n<li>Antonio  Luis Campos da silva topa (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Angel Joaquin Garcia Collado En esta tesis se aborda el dise\u00f1o, implementaci\u00f3n y medida de nuevos metamateriales [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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