{"id":60539,"date":"2018-03-09T22:48:22","date_gmt":"2018-03-09T22:48:22","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/modelos-discretos-de-dislocaciones-en-redes-cristalinas-formulacion-analisis-y-aplicaciones\/"},"modified":"2018-03-09T22:48:22","modified_gmt":"2018-03-09T22:48:22","slug":"modelos-discretos-de-dislocaciones-en-redes-cristalinas-formulacion-analisis-y-aplicaciones","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/matematicas\/modelos-discretos-de-dislocaciones-en-redes-cristalinas-formulacion-analisis-y-aplicaciones\/","title":{"rendered":"Modelos discretos de dislocaciones en redes cristalinas   formulacion, analisis y aplicaciones"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ignacio Plans Beriso <\/strong><\/h2>\n<p>La comprensi\u00f3n del comportamiento de los defectos presentes en las redes cristalinas es esencial para el dise\u00f1o y fabricaci\u00f3n de dispositivos nanoelectr\u00f3nicos porque afectan fuertemente sus propiedades electr\u00f3nicas, \u00f3pticas y magn\u00e9ticas. Asimismo defectos como las dislocaciones son esenciales para el proceso de crecimiento de estructuras heteroepitaxiales, para entender la propagaci\u00f3n de fisuras o en experimentos de nanoindentaci\u00f3n que tratan de aclarar el comienzo de la plasticidad. en la presente tesis doctoral se formulan modelos discretos de dislocaciones en redes cristalinas del sistema c\u00fabico (simple, centrado en las caras o centrado en el cuerpo, con la posibilidad de incluir una base de varios \u00e1tomos en cada nodo de la red) que recuperan la elasticidad lineal anisotr\u00f3pica en su l\u00edmite continuo. En la tesis se analiza la nucleaci\u00f3n homog\u00e9nea de dislocationes en un cristal bidimensional sujeto a tensiones de cizalladura y se concluye que los estados con dislocaciones aparecen como bifurcaciones subcr\u00edticas del estado estacionario sin dislocaciones. Las ramas bifurcadas multiestables se calculan por m\u00e9todos de continuaci\u00f3n num\u00e9rica y se estudia su selecci\u00f3n mediante ramping de la tensi\u00f3n de cizalla. Tambi\u00e9n se calculan valores cr\u00edticos para la formaci\u00f3n de dislocaciones en sistemas heteroepitaxiales, as\u00ed como en fisuras y experimentos de nanoindentaci\u00f3n.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Modelos discretos de dislocaciones en redes cristalinas   formulacion, analisis y aplicaciones<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Modelos discretos de dislocaciones en redes cristalinas   formulacion, analisis y aplicaciones <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ignacio Plans Beriso <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Carlos III de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 21\/09\/2007<\/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>Luis L\u00f3pez Bonilla<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Vega   De Prada Jos\u00e9 Manuel <\/li>\n<li>Jorge Galan Vioque (vocal)<\/li>\n<li> Ballesteros Perez Carlos Ines (vocal)<\/li>\n<li> Ariza Moreno Mar\u00eda  Del Pilar (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ignacio Plans Beriso La comprensi\u00f3n del comportamiento de los defectos presentes en las redes cristalinas es esencial [&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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