{"id":31434,"date":"1997-01-01T00:00:00","date_gmt":"1997-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-por-microscopia-de-efecto-tunel-y-microscopia-electronica-de-estructuras-submicrometricas\/"},"modified":"1997-01-01T00:00:00","modified_gmt":"1997-01-01T00:00:00","slug":"estudio-por-microscopia-de-efecto-tunel-y-microscopia-electronica-de-estructuras-submicrometricas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/estudio-por-microscopia-de-efecto-tunel-y-microscopia-electronica-de-estructuras-submicrometricas\/","title":{"rendered":"Estudio por microscopia de efecto tunel y microscopia electronica de estructuras submicrometricas."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Agustina Asenjo Barahona <\/strong><\/h2>\n<p>El trabajo de esta tesis se centra en el desarrollo de un microscopio de efecto tunel, stm (scanning tunneling microscope), combinado con un electronico comercial, sem (scanning electron microscope), y las distintas aplicaciones de este sistema. Las caracteristicas mas destacables del stm dise\u00f1ado, ademas de su resolucion (0.1 a en la direccion vertical y 0.01 na en corriente), son su reducido tama\u00f1o y la posibilidad de elegir la zona de estudio utilizando un posicionamiento inercial.  por sus dimensiones, es posible insertar y extraer el stm a traves de la camara de transferencia del sem, disminuyendo asi el ritmo de contaminacion de la muestra y mejorando el vacio final alcanzado. El estudio de una misma zona utilizando ambas tecnicas (stm y sem) permite la correlacion de datos. La aplicacion mas apropiada ha sido la del estudio de los procesos asociados al calentamiento por efecto joule de peque\u00f1as muestras (1umx1umx4um): difusion, recristalizacion, electromigracion y facetado, y su importancia relativa al variar la temperatura y la densidad de corriente.  tambien se ha demostrado la capacidad del stm para provocar cambios a nivel atomico sobre wse2. Las modificaciones obtenidas han sido de dos tipos:  localizadas y extensas. Las estructuras extensas pueden explicarse por interacciones entre punta y muestra. Sin embargo, los datos espectroscopicos revelan que su comportamiento coincide con el de defectos situados en capas enterradas.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio por microscopia de efecto tunel y microscopia electronica de estructuras submicrometricas.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio por microscopia de efecto tunel y microscopia electronica de estructuras submicrometricas. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Agustina Asenjo Barahona <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1997<\/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> Baro Vidal Arturo M.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Francisco Javier Piqueras De Noriega <\/li>\n<li>Carmen Ocal Garcia (vocal)<\/li>\n<li>Nicolas Garcia Garcia (vocal)<\/li>\n<li>Ricardo Garcia Garcia (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Agustina Asenjo Barahona El trabajo de esta tesis se centra en el desarrollo de un microscopio de [&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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