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wp-container-core-post-template-is-layout-1 wp-block-post-template-is-layout-grid"> <li class="wp-block-post post-150267 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-336-juin-2024/" target="_self">Brèves de l’IRAMIS n° 336 (Juin 2024)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Vers une simulation machine learning d’agrégats chargés Benoit Gervais (CIMAP/SIMUL) L’intelligence artificielle et plus généralement les méthodes de machine learning (ML) ont fait leur apparition tout récemment en simulation des matériaux. Dans leur principe, elles permettent de s’affranchir de calculs longs et complexes pour obtenir des grandeurs telles l’énergie et les forces d’interaction d’un ensemble… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-336-juin-2024/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 336 (Juin 2024)</span></a> </div> </article> </li> <li class="wp-block-post post-150258 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-335-mai-2024/" target="_self">Brèves de l’IRAMIS n° 335 (Mai 2024)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Effets orbitalaires dans les gaz bidimensionnels avec couplage Rashba Michel VIret (SEC/LNO) Un des objectifs de la spintronique est de chercher à manipuler des courants d’aimantation (sans transport net de charge) pouvant remplacer plus frugalement les courants électriques dans le calcul numérique. Pour ce faire, après avoir traité l’information sous sa forme magnétique, il faut… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-335-mai-2024/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 335 (Mai 2024)</span></a> </div> </article> </li> <li class="wp-block-post post-146817 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-334-avril-2024/" target="_self">Brèves de l’IRAMIS n° 334 (Avril 2024)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">ESPADON : sondes photoniques pour un Equipex interdisciplinaire autour des matériaux du patrimoine Delphine Neff et Eddy Foy (Nimbe/Lapa) Le projet ESPADON met à disposition de la communauté des scientifiques du Patrimoine, des moyens instrumentaux de tomographies 3D multi-échelles et d’imagerie multi-physique 2D, ainsi que des ressources et savoir-faire numériques de traitement et de gestion de… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-334-avril-2024/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 334 (Avril 2024)</span></a> </div> </article> </li> <li class="wp-block-post post-142194 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ moderation-_expire_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-333-mars-2024/" target="_self">Brèves de l’IRAMIS n° 333 (Mars 2024)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Décomposition en processus photoniques de la génération d’harmoniques d’ordre élevé en champ fort Thierry Ruchon (LIDYL/Atto) Les flashs de lumière attoseconde constituent l’outil incontournable pour suivre la dynamique des électrons dans les atomes, les molécules ou la matière condensée. Ces impulsions laser ultra-courtes peuvent être obtenues par génération d’harmoniques d’ordre élevé (GHOE) produite par l’interaction… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-333-mars-2024/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 333 (Mars 2024)</span></a> </div> </article> </li> <li class="wp-block-post post-142179 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ moderation-_expire_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-332-fevrier-2024/" target="_self">Brèves de l’IRAMIS n° 332 (Février 2024)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Symétrie du couplage dans les supraconducteurs de type kagome Romain Grasset (LSI/DDSM) Lors de la découverte d’une nouvelle famille de matériaux supraconducteurs, l’une des questions primordiales qui se pose est le mécanisme de couplage qui permet aux électrons de s’appareiller en paires de Cooper et, plus précisément, de la symétrie de ce couplage. C’est pour… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-332-fevrier-2024/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 332 (Février 2024)</span></a> </div> </article> </li> <li class="wp-block-post post-115297 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-331-janvier-2024/" target="_self">Brèves de l’IRAMIS n° 331 (Janvier 2024)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Transferts de charge, d’atome et d’énergie au sein de systèmes biomoléculaires en phase gazeuse Jean-Christophe Poully (CIMAP/AMA) En radiothérapie ou pour la stérilisation, des rayonnements ionisants peuvent être utilisés pour interagir avec des tissus biologiques. La conséquence de l’irradiation peut être la mort cellulaire, ou une modification des propriétés. Au cours de l’irradiation, les processus… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-331-janvier-2024/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 331 (Janvier 2024)</span></a> </div> </article> </li> <li class="wp-block-post post-115199 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-330-novembre-decembre-2023/" target="_self">Brèves de l’IRAMIS n° 330 (Novembre-Décembre 2023)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Modélisation de l’effet tunnel anisotrope spin galvanique Cosimo Gorini (SPEC/GMT) Le couplage spin-orbite (interaction entre le mouvement d’une particule et son spin) ouvre de nombreuses possibilités de conversion entre un signal électrique et un signal porté par le spin. Dans les systèmes 2D où la symétrie par inversion est brisée, des courants de charge peuvent… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-330-novembre-decembre-2023/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 330 (Novembre-Décembre 2023)</span></a> </div> </article> </li> <li class="wp-block-post post-96219 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-327-juin-juillet-aout-2023/" target="_self">Brèves de l’IRAMIS n° 327 (Juin-juillet-août 2023)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Nouvelles sondes planaires actives pour microscopes AFM Laurent Pham-Van (SPEC/LEPO) À l’origine, l’introduction des « tuning fork » (diapasons horlogers) comme porte pointe en Microscopie à Force Atomique (AFM) à l’air semblait une gageure, car la raideur de ces sondes était physiquement incompatible avec les deux modes de stabilisation connus : « contact » et « tapping ». En développant le mode… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-327-juin-juillet-aout-2023/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 327 (Juin-juillet-août 2023)</span></a> </div> </article> </li> <li class="wp-block-post post-96198 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-326-mai-2023/" target="_self">Brèves de l’IRAMIS n° 326 (Mai 2023)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Nouvelles méthodologies IRM pour l’analyse des matériaux électrochimiques et des batteries Konstantin Romanenko (NIMBE/LSDRM) Les cellules de poche (« pouch », en anglais) conventionnelles des batteries Li-ion contiennent des composants hautement magnétiques (Ni, Fe, Co, etc.) qui, lorsqu’ils sont placés dans le champ magnétique homogène d’un instrument RMN, créent des perturbations de l’ordre du milliTesla. La cartographie… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-326-mai-2023/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 326 (Mai 2023)</span></a> </div> </article> </li> <li class="wp-block-post post-96190 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-325-avril-2023/" target="_self">Brèves de l’IRAMIS n° 325 (Avril 2023)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Nouveau mécanisme d’accélération d’électrons par interaction d’un laser avec le bord d’une cible plasma sur-dense Michèle Raynaud (LSI) L’intérêt pour le développement de nouvelles sources compactes de particules énergétiques et de rayonnement via des mécanismes d’interaction entre un laser ultra-intense et un plasma n’a cessé d’augmenter au cours de la dernière décennie, car ces sources… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-325-avril-2023/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 325 (Avril 2023)</span></a> </div> </article> </li> <li class="wp-block-post post-96186 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-324-fevrier-mars-2023/" target="_self">Brèves de l’IRAMIS n° 324 (Février-Mars 2023)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">Radiolyse et corrosion anoxique : maîtriser le dégagement à long terme de H2 dans l’installation Cigéo Gérard Baldacchino (LYDIL/DICO) L'hydrogène moléculaire, dans une installation de stockage ultime des déchets nucléaires de haute activité et à vie longue (HAVL) comme Cigéo (Andra), peut provenir de la radiolyse de l'eau et aussi des processus de corrosion anoxique. Des… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-324-fevrier-mars-2023/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 324 (Février-Mars 2023)</span></a> </div> </article> </li> <li class="wp-block-post post-96139 post type-post status-publish format-standard has-post-thumbnail hentry category-breve moderation-_importation_phocea_ moderation-_ast_ unite-iramis"> <article class="wp-block-group alignwide is-style-default has-base-background-color has-background has-global-padding is-layout-constrained wp-block-group-is-layout-constrained"> <div class="wp-block-group QL_Bloc_Defaut_Contenu is-style-default is-layout-flow wp-block-group-is-layout-flow" style="margin-top:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"> <h2 style="font-style:normal;font-weight:500;" class="wp-block-post-title has-medium-font-size"><a href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-323-janvier-2023/" target="_self">Brèves de l’IRAMIS n° 323 (Janvier 2023)</a></h2> <div class="wp-block-post-excerpt has-intermediaire-font-size"><p class="wp-block-post-excerpt__excerpt">La NanoSpace : gravure, imagerie et analyse chimique à l’échelle nanométrique avec un unique équipement Fabrice Gourbilleau (CIMAP/NIMPH) Le CIMAP (UMR 6252 CNRS, CEA, Ensicaen, Université de Caen) vient d’acquérir un équipement couplant l’imagerie de microscopie électronique à balayage (MEB) avec une colonne ionique focalisée plasma (FIB), pour la gravure, et un spectromètre de masse des… </p></div> <a class="is-style-en-savoir-plus wp-block-read-more" href="https://iramis.cea.fr/2019/03/breves-de-l-iramis-n-323-janvier-2023/" target="_self">Lire la suite<span class="screen-reader-text"> : Brèves de l’IRAMIS n° 323 (Janvier 2023)</span></a> </div> 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