{"id":62820,"date":"2008-08-02T00:00:00","date_gmt":"2008-08-02T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/fabrication-of-soft-x-ray-diffractive-lenses-with-resolution-in-the-nanometer-range\/"},"modified":"2008-08-02T00:00:00","modified_gmt":"2008-08-02T00:00:00","slug":"fabrication-of-soft-x-ray-diffractive-lenses-with-resolution-in-the-nanometer-range","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/fabrication-of-soft-x-ray-diffractive-lenses-with-resolution-in-the-nanometer-range\/","title":{"rendered":"Fabrication of soft x-ray diffractive lenses with resolution in the nanometer range"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Joan Vila Comamala <\/strong><\/h2>\n<p>Durante las \u00faltimas d\u00e9cadas, la construcci\u00f3n de anillos de almacenamiento de electrones exclusivamente dedicados a la producci\u00f3n de radiaci\u00f3n sincrotr\u00f3n ha sido la clave para justificar el gran desarrollo de los componentes \u00f3pticos para rayos x. Se requieren nuevos elementos \u00f3pticos para una explotaci\u00f3n \u00f3ptima de las propiedades de esta luz, que puede usarse para descubrir los secretos de la materia y para revelar el mundo microsc\u00f3pico. El uso de radiaci\u00f3n sincrotr\u00f3n como sonda ha hecho posible una gran cantidad de experimentos para expandir el conocimiento de muchas \u00e1reas cient\u00edficas. Paulatinamente, la radiaci\u00f3n sincrotr\u00f3n se ha convertido en un instrumento indispensable para muchos cient\u00edficos, que trabajan en disciplinas muy diferentes como la biolog\u00eda, la qu\u00edmica, la ciencia de materiales o incluso la arqueolog\u00eda. la microscop\u00eda de rayos x ha emergido como t\u00e9cnica para observar estructuras que no son accesibles con microscopia \u00f3ptica convencional, y que tiene ventajas respeto a la microscop\u00eda electr\u00f3nica debido a la mayor longitud de penetraci\u00f3n y a la sensibilidad qu\u00edmica de la radiaci\u00f3n x. La \u00f3ptica de los microscopios de rayos x incluye componentes como las lentes zonales de fresnel que se producen con t\u00e9cnicas de microfabricaci\u00f3n. en este trabajo, se han fabricado lentes zonales de fresnel utilizando distintas t\u00e9cnicas y se han testado en diversas fuentes de luz sincrotr\u00f3n. Describiremos en detalle las t\u00e9cnicas de micro- y nanofabricaci\u00f3n que son necesarias para la producci\u00f3n de estos elementes, des de la litograf\u00eda por haz de electrones a la transferencia del patr\u00f3n a distintos materiales. En particular, presentamos lentes para rayos x blandos hechas de silicio. Mostraremos que \u00e9stas funcionan bien en las fuentes de luz existentes y que debido a su robustez ser\u00e1n tambi\u00e9n apropiadas para las fuentes de rayos x de 4a generaci\u00f3n. Tambi\u00e9n preparamos un elemento \u00f3ptico difractivo que produce una mancha iluminaci\u00f3n<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Fabrication of soft x-ray diffractive lenses with resolution in the nanometer range<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Fabrication of soft x-ray diffractive lenses with resolution in the nanometer range <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Joan Vila Comamala <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 08\/02\/2008<\/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>Salvador Ferrer Fabregas<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Mar\u00eda  josefa Yzuel gimenez <\/li>\n<li>francesc Perez murano (vocal)<\/li>\n<li>christian David (vocal)<\/li>\n<li>Emilio Lora-tamayo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Joan Vila Comamala Durante las \u00faltimas d\u00e9cadas, la construcci\u00f3n de anillos de almacenamiento de electrones exclusivamente dedicados [&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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