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X-WR-CALDESC:Évènements pour SFP Alpes
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DTSTART;TZID=Europe/Paris:20260623T100000
DTEND;TZID=Europe/Paris:20260623T110000
DTSTAMP:20260618T133516
CREATED:20260529T151847Z
LAST-MODIFIED:20260529T152039Z
UID:10000179-1782208800-1782212400@sfp-alpes.fr
SUMMARY:Cyril BRESSY (Aix-Marseille Université - Institut des Sciences Moléculaires de Marseille (iSm2))
DESCRIPTION:Compartmentalized MultiCatalysis : Chirality as Probe\, Separation of Enantiomers & Catalytic Active Transport\nRésumé : \nLife solves the problem of different reaction conditions by the compartmentalization of the catalytic systems. This solution opens new opportunities for the chemists using synthetic membranes to isolate the catalytic systems. \nWe were interested to study the diffusion of molecules through a semi-permeable membrane when no gradient of concentration does exist. Chirality was found to be helpful to be used as probe to study such systems (1). A scale of diffusion energy depending on the structure of the solute was established providing fruitful lessons. \nBased on these results\, compartmentalized multicatalytic systems were set up for different goals : \n– A system where two catalysts of opposite configurations are working in each compartment leading to the physical separation of enantiomeric products starting from a racemic substrate. This is describing a case of compartmentalized parallel kinetic resolution (CPKR)(2).\n– A system to promote the active transport of a molecule able to cross a membrane. The active transport means a transfer against the gradient of concentration (3). \nReferences \n1 .  J. Hou\, S. Chevallier-Michaud\, L. Favre\, D. Hérault & C. Bressy\, J. Membrane Sci. 2026\, in revision.\n2  . a) J. Hou\, S. Chevallier-Michaud\, M. Jean\, L. Favre\, D. Hérault & C. Bressy\, J. Am. Chem. Soc. 2023\, 145\, 27236-27241; b) J. Hou\, D. Hérault\, C. Bressy\, “Method for simultaneous preparation of separated enantiomeric products from racemic substrates”\, Extension internationale PCTEP2022085983 (2022) WO2023126186A1.\n3 . Manuscript in preparation \n_ \nContact : adrien.quintard@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/cyril-bressy-aix-marseille-universite-institut-des-sciences-moleculaires-de-marseille-ism2/
LOCATION:DCM – Salle C209\, DCM - Bât Chimie Recherche 301 rue de la Chimie\, St Martin d'Hères\, 38400\, France
CATEGORIES:Séminaire
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260623T110000
DTEND;TZID=Europe/Paris:20260623T120000
DTSTAMP:20260618T133516
CREATED:20260326T142350Z
LAST-MODIFIED:20260326T142357Z
UID:10000111-1782212400-1782216000@sfp-alpes.fr
SUMMARY:Lucas GOEHRING (Nottingham Trent University (UK))
DESCRIPTION:Structure formation in paints and coatings\nRésumé : \nPaints and coatings are typically a mix of small particles\, like pigments\, along with a polymer glue or binder. Similar products include inks\, varnishes\, cosmetics\, ceramics and even the lithium-ion battery electrodes that power modern electric vehicles. These materials are prepared as a liquid\, spread over a surface\, and dried.  As anyone who has painted a wall will know\, however\, this process can easily go wrong. Even a well-prepared paint can develop an undesirable skin and wrinkle\, crack\, or peel\, and these coatings can also visibly degrade over time. \nIn this talk I will go through the key stages of film formation\, or how a colloidal dispersion dries.  I will show how small angle scattering experiments (SANS/SAXS) helped to elucidate how the structure of the film changes during drying\, evolving from a dilute gas of particles\, into a transient gel where capillary pressures balance electrostatic repulsion\, to a final aggregated solid. I will then turn to look at how the insight gained has led to a better understanding of mechanical instabilities like fracture\, shear banding\, birefringence\, and peeling\, as well as revealing an unexpected route to colloidal crystallisation. \nFinally\, I will summarise our recent work using neutron scattering techniques to investigate blanching\, a degradation process that can cause a visible whitening in the traditional varnishes that are used as a protective outer coating on many historically and artistically important paintings. \nSpeaker’s website: https://www.ntu.ac.uk/staff-profiles/science-technology/lucas-goehring \n— \nOrsolya Czakkel (College 9 Secretary) \nExternal visitors may ask for a site access to tellier@ill.fr \nZoom link: https://ill.zoom.us/j/95581858117?pwd=hh9paEQj6BF8u9WYzfZkvZaGspe1i3.1  – Passcode: 078610 \n 
URL:https://sfp-alpes.fr/event/lucas-goehring-nottingham-trent-university-uk/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260623T140000
DTEND;TZID=Europe/Paris:20260623T160000
DTSTAMP:20260618T133516
CREATED:20260604T144948Z
LAST-MODIFIED:20260604T144948Z
UID:10000190-1782223200-1782230400@sfp-alpes.fr
SUMMARY:Soutenance HDR de Damien CALISTE (CEA-Irig/MEM)
DESCRIPTION:Étude de mécanismes à l’échelle atomique pour les matériaux fonctionnels\, apports de la DFT comme un outils en évolution\nRésumé : \nThe purpose to use numerical tools is to treat problems where the analytical solutions are too complex or unknown. In the field of solid-state physics\, the advent of the Density Functional Theory (DFT) had a major impact on the studies of materials at the atomic scale. Its numerous implementations and ability to efficiently run on large computing infrastructures\, made it popular and it quickly became indispensable in both academic and industrial research\, enabling unprecedented insights into the electronic\, structural\, and chemical properties of complex systems. However\, the power of DFT is not solely derived from its theoretical foundations; it is equally dependent on the robustness\, efficiency\, and adaptability of the computational tools that implement it. ​ \nThis defense will deal with these two aspects: material science through DFT simulations\, and maintainance and development of large numerical infrastructures like a DFT code. ​ \nI will first address how atomistic-level simulations can be used to complement experimental characterisations\, through the example of the indirect role played by Se atoms in the efficiency improvement of CdTe solar panels. Revealing such mechanisms is important for material design\, driving material engineering by knowledge. ​ \nA second part will be dedicated to a broad overview on the physics description of a graphite electrode in a Li-ion battery. Starting from a fully charged anode\, and following the deintercalation process\, I will question what insights we can get from DFT calculations with the existing knowledge obtained from long-passed experiments as from more recent in-operando characterisation results. ​ \n​Studying the dilute regime in graphite intercalation will lead to open questions about the capability of numerical simulations to address cases where the strong interactions between the cations and the host material\, compete with the binding of the layers. To properly address such questions\, it is important to have available within DFT\, a level of theory capable of treating inhomogeneous systems made of places where covalent bonds are dominant while in other areas van der Waals interactions take the lead. These situations can be commonly found in several classes of materials\, from van der Waals heterostructures to hybrid perovskites when out-of-equilibrium processes take place\, with defect / impurity diffusion or phase / structural transitions. The recent developments of versatile meta-GGAs associated to dispersion corrections\, look promising and have demonstrated their ability to reproduce perfect van der Waals systems. Concurrently\, their usage are restricted to some codes\, hindered by the complexity in DFT implementations\, isolating the diffusion of new ideas. I believe that the advent of code generation through AI is a timely opportunity to help spreading state-of-the-art DFT developments. Such thoughts will be discussed in the last part of the defense.​ \n_ \nContact : alain.farchi@cea.fr
URL:https://sfp-alpes.fr/event/soutenance-hdr-de-damien-caliste-cea-irig-mem/
LOCATION:CEA\, entrée principale – Salle de soutenance (bâtiment A2)\, 17\, avenue des Martyrs\, Grenoble\, 38000\, France
CATEGORIES:Soutenance,Soutenance HDR
ORGANIZER;CN="IRIG - CEA":MAILTO:odile.rossignol@cea.fr
END:VEVENT
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DTSTART;TZID=Europe/Paris:20260623T180000
DTEND;TZID=Europe/Paris:20260623T220000
DTSTAMP:20260618T133516
CREATED:20260612T085437Z
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UID:10000198-1782237600-1782252000@sfp-alpes.fr
SUMMARY:Editathon « Femmes & Ingéniosité » 2026
DESCRIPTION:Depuis 2017\, La Casemate\, centre de sciences de Grenoble et ses partenaires organisent un éditathon « Femmes & Sciences » sur des thèmes aussi variés que l’astronomie\, l’environnement ou les sciences de la Terre. \nLe 23 juin 2026\, venez participer au 9ème éditathon « Femmes & Sciences » de La Casemate\, une édition qui mettra en avant les femmes ingénieures et ingénieuses ! Cet événement est organisé à l’occasion des 25 ans de Wikipédia et de la Journée internationale des femmes ingénieures et en marge de l’exposition Batteries à La Casemate. \nEn savoir plus… \nInscription gratuite mais obligatoire
URL:https://sfp-alpes.fr/event/editathon-femmes-ingeniosite-2026/
LOCATION:La Casemate\, 2 Place Saint-Laurent\, Grenoble\, 38000\, France
CATEGORIES:Evènements
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