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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260526T110000
DTEND;TZID=Europe/Paris:20260526T120000
DTSTAMP:20260613T151907
CREATED:20260424T075655Z
LAST-MODIFIED:20260424T075655Z
UID:10000126-1779793200-1779796800@sfp-alpes.fr
SUMMARY:Mark GLOVER (Department of Biochemistry\, University of Alberta\, Edmonton\, Canada)
DESCRIPTION:Mechanism of sRNA recognition and regulation by FinO RNA chaperones\nRésumé : \nThe FinO family of RNA chaperones regulate sRNA function throughout gram negative bacteria. Many of the best characterized family members bind to rho-independent transcription termination structures at the 3’ ends of sRNAs and mediate pairing of the sRNA with their mRNA targets. The crystal structure of the FinO domain of the Legionella pneumophila chaperone RocC bound to its sRNA target reveals a novel interaction that recognizes both the stem and the 3’ end of the terminator structure. The structure suggests a mechanism by which different FinO proteins can selectively bind RNAs with different 3’ tail lengths\, which is likely conserved throughout the FinO family. Biochemical and in vivo studies indicate that intrinsically disordered regions adjacent to the FinO domain are also essential for sRNA regulation\, by remodeling RNA structure to facilitate RNA-RNA association. \n__ \nHôte : Dr Nicolas Coquelle (IBS/Groupe Dynamique et Cinétique des processus moléculaires) \nRappel : L’accès au campus EPN nécessite un avis de rendez-vous. A cet effet merci d’adresser votre demande à ibs.seminaires@ibs.fr (au moins 48h à l’avance).
URL:https://sfp-alpes.fr/event/mark-glover-department-of-biochemistry-university-of-alberta-edmonton-canada/
LOCATION:IBS – Salle des séminaires\, IBS 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260526T140000
DTEND;TZID=Europe/Paris:20260526T150000
DTSTAMP:20260613T151907
CREATED:20260521T142155Z
LAST-MODIFIED:20260521T142155Z
UID:10000155-1779804000-1779807600@sfp-alpes.fr
SUMMARY:Jamie SILK (PhD Student - LMGP\, Université Grenoble Alpes\, CNRS\, Grenoble INP\, Grenoble\, France)
DESCRIPTION:Development of a Sustainable Passive Atmospheric Water Harvesting Device\nRésumé : \nWater is essential for human life\, yet roughly two billion people worldwide still lack access to safely managed drinking water. With increasing pressure from rapid population growth and climate change\, there is a critical need for water generation technologies that are low-cost\, scalable\, and environmentally sustainable. Passive atmospheric water harvesting offers a promising solution by capturing moisture from the air without continuous energy input\, but current approaches are often limited by low efficiency or high cost. This study aims to optimize a bioinspired mixed-wettability surface to enhance passive water collection by promoting both droplet nucleation and rapid transport of condensed water. The surface is fabricated using superhydrophobic zinc oxide nanowire (NW) arrays synthesized via a scalable sol-gel/chemical bath deposition method\, followed by functionalization with a non-fluorinated silane agent. Hydrophilic silica nanoparticles are then deposited on the superhydrophobic NW arrays to create the mixed wettability effect. Material performance is optimized by varying NW morphology\, surface wettability\, and nanoparticle concentration to maximize water collection rates. To induce condensation without energy input\, this mixed-wettability surface is coupled with a passive daytime radiative cooling (PDRC) coating composed of bicontinuous interfacially jammed emulsion gels (bijels). These porous polymer films exhibit high solar reflectance and strong infrared emissivity\, enabling sub-ambient cooling. The PDRC layer is optimized by adjusting domain size and film thickness to achieve maximum cooling performance. In parallel\, a life cycle assessment (LCA) is conducted to evaluate the environmental impacts of material fabrication and identify key contributors to categories such as global warming potential\, water use\, and ozone depletion. This integrated approach informs design choices that minimize environmental burden. The results of this study show promise in developing a material with the ability to passively collect atmospheric water even in climates with low levels of humidity\, potentially aiding in providing clean water globally in the face of the climate crisis. \nShort Bio/CV \nI am a PhD student at the LMGP lab studying passive atmospheric water harvesting technologies. I hold a Bachelor’s degree in Chemical Engineering and a Master’s degree in Sustainable Engineering for International Development from Villanova University (Pennsylvania\, USA). During my master’s\, my research studied the impact of climate change on drinking water resources in Madagascar\, combining data from the latest IPCC climate models with local stakeholder knowledge and priorities to plan for future climate-related water challenges. In 2025\, I spent four months as an invited researcher at the SMART LAB at the University of Pennsylvania\, where I researched passive daytime radiative cooling coatings. My current research builds on this background\, focusing on the development of environmentally sustainable\, low-cost\, scalable materials for passive water collection. \n_ \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/jamie-silk-phd-student-lmgp-universite-grenoble-alpes-cnrs-grenoble-inp-grenoble-france/
LOCATION:LMGP – salle des séminaires\, Grenoble INP -Phelma 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260528T130000
DTEND;TZID=Europe/Paris:20260528T140000
DTSTAMP:20260613T151907
CREATED:20260507T093329Z
LAST-MODIFIED:20260521T094049Z
UID:10000146-1779973200-1779976800@sfp-alpes.fr
SUMMARY:Vincent LACROIX  (LBBE - Lyon)
DESCRIPTION:Repeats : the dark side of transcriptome assembly\n_ \nContact : lucie.lamothe@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/vincent-lacroix-lbbe-lyon/
LOCATION:IMAG – Salle de Réunion\, 150 place du Torrent\, St Martin d’Hères\, 38400\, France
CATEGORIES:Séminaire
ORGANIZER;CN="TIMC - IMAG":MAILTO:lucie.lamothe@univ-grenoble-alpes.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260528T140000
DTEND;TZID=Europe/Paris:20260528T150000
DTSTAMP:20260613T151907
CREATED:20260430T121134Z
LAST-MODIFIED:20260430T122107Z
UID:10000139-1779976800-1779980400@sfp-alpes.fr
SUMMARY:Alexandre BUZDIN (LOMA\, Bordeaux)
DESCRIPTION:Optical and TeraHertz radiation methods of flux manipulation in superconductors\nRésumé : \nAlthough the average properties of vortex matter in superconductors can be tuned using magnetic fields\, temperature\, or electric currents\, the manipulation of individual Abrikosov vortices remains challenging and has only been demonstrated with advanced scanning local probe microscopies. Recently\, a far-field optical method was proposed\, leveraging local heating of the superconductor with a focused laser beam to enable fast and precise manipulation of individual vortices\, akin to optical tweezers. This development paves the way for creating laser-driven Josephson junctions controlled by optically driven Abrikosov vortices. \nAnother approach for manipulating single flux quanta involves the so-called inverse Faraday effect\, where circularly polarized radiation interacts with the superconducting condensate\, acting as an effective magnetic field that generates supercurrents and DC magnetic moments. By employing the time-dependent Ginzburg–Landau equation formalism\, we have analyzed the current-carrying states of a small superconducting ring illuminated by such radiation. Numerical simulations reveal the possibility of 100% on-demand switching between current-carrying states in the superconductor by controlling the helicity of the electromagnetic field polarization. \nFurthermore\, theoretical analysis suggests the feasibility of the electromagnetic drag effect in superconductors—the generation of DC supercurrents and second harmonic signals induced by microwave radiation incident on a superconducting surface. \nThese findings open pathways to the all-optical operation of superconducting devices\, including RF SQUID flux qubits. \n_ \nContact : florence.levy-bertrand@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/alexandre-buzdin-loma-bordeaux/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260528T140000
DTEND;TZID=Europe/Paris:20260528T150000
DTSTAMP:20260613T151907
CREATED:20260430T130321Z
LAST-MODIFIED:20260430T130828Z
UID:10000143-1779976800-1779980400@sfp-alpes.fr
SUMMARY:Charles McCRORY (Chemistry and Macromolecular Science and Engineering - University of Michigan\, USA)
DESCRIPTION:Breaking Scaling Relationships in Molecular Electrocatalysts for the CO2 Reduction Reaction\nProfesseur invité UGA du 15/05 au 15/06/2026 \nRésumé : \nFor molecular electrocatalysts\, beneficial decreases in effective overpotential are typically correlated with detrimental decrease in catalytic activity. This scaling relationship arises when both effective overpotential and kinetic reactivity scale with metal site nucleophilicity. Our research strategy is to break typical molecular scaling  relationships by designing molecular electrocatalysts with redox-active ligands where the catalytic reaction is initiated by redox activation of the ligand. These systems decouple metal site nucleophilicity from effective overpotential\, thus allowing us to break the correlation between catalyst reactivity and effective overpotential. \nIn this talk\, we will discuss how incorporating electronic substituents onto the redox-active ligand structure of Co(pyridyldiimine) complexes facilitates ligand reduction and leads to an inverse molecular scaling relationship for electrocatalytic CO2 reduction. We will explore the strategy of incorporating cationic charges into the complex as a means of breaking and inverting scaling relationships both through the incorporation of charged substituents into the ligand scaffold and through construction of homo- and heterobimetallic Co-Co and Co-Zn complexes. We will also discuss whether the activity enhancement from these cationic substituents is best described as\nthrough-space electrostatic stabilization of reactive intermediates\, or through-bond inductive effects related to the stabilization of the catalytic intermediates. Finally\, we will explore how these complexes operate for CO2 reduction and other electrocatalytic reductions when incorporated into larger coordination polymers and macromolecular scaffolds. \n_ \nContact : cyrille.costentin@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/charles-mccrory-chemistry-and-macromolecular-science-and-engineering-university-of-michigan-usa/
LOCATION:DCM – Salle C209\, DCM - Bât Chimie Recherche 301 rue de la Chimie\, St Martin d'Hères\, 38400\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260529T110000
DTEND;TZID=Europe/Paris:20260529T120000
DTSTAMP:20260613T151907
CREATED:20260521T141533Z
LAST-MODIFIED:20260521T143851Z
UID:10000154-1780052400-1780056000@sfp-alpes.fr
SUMMARY:Gilles PAREZ
DESCRIPTION:The range of multipartite entanglement in many-body states\nLe séminaire théorie est financé par la fédération de recherche Quantalps \nRésumé : \nThe characterization of entanglement and its structure in quantum many-body states is a long-standing problem at the interface of condensed matter physics and quantum information. A pivotal question is to understand to what extent two or more regions can remain entangled at large distances. As it turns out\, this is more subtle than understanding the range of quantum correlations: strongly correlated states such as resonating valence-bond states and critical ground states can display long-range correlations but only short-range multipartite entanglement. I will discuss how particle statistics and superselection rules also play a role in this problem\, and how to understand it within the broader “fate of entanglement” framework\, which goes beyond the study of entanglement decay with distance and also applies to finite-temperature systems and nonequilibrium dynamics. \n_ \nContact : jeanne.colbois@neel.cnrs.fr \n 
URL:https://sfp-alpes.fr/event/gilles-parez/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260602T110000
DTEND;TZID=Europe/Paris:20260602T120000
DTSTAMP:20260613T151907
CREATED:20260528T153318Z
LAST-MODIFIED:20260528T153318Z
UID:10000163-1780398000-1780401600@sfp-alpes.fr
SUMMARY:Damien GREGOIRE (IGMM\, Montpellier\, France)
DESCRIPTION:In vivo modeling of tumor heterogeneity in hepatocellular carcinoma\nRésumé : \nOur research aims at a better understanding of how various combinations of oncogenic events drive tumorigenesis. We address two major questions in cancer biology\, within the context of inter-tumoral heterogeneity: (1) what mechanisms underlie oncogenic cooperation in shaping of the tumor cell fate\, and (2)\, how does the genetic identity of a tumor influence its interactions with the microenvironment ? \nWe explore these questions in the context of hepatocellular carcinoma (HCC)\, the most common primary liver cancer. Our approach combines functional studies with advanced preclinical mouse models\, particularly in vivo hepatocyte transfection via hydrodynamic gene transfer. We focus our investigations on tumors driven by either FGF19 overexpression or a spectrum of p53 mutations. \nIn this talk at IAB\, I will present recent findings on these two distinct families of hepatic tumors. Our ultimate goal is to elucidate how the genetic profile of HCC shapes the tumor cell phenotype\, its interactions with the tumor microenvironment—especially immune cells—and its response to treatments. \n_ \nContact : thomas.decaens@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/damien-gregoire-igmm-montpellier-france/
LOCATION:IAB – Salle de séminaire\, IAB Site Santé - Allée des Alpes\, La Tronche\, 38700\, France
CATEGORIES:Séminaire
ORGANIZER;CN="IAB":MAILTO:appaixfl@univ-grenoble-alpes.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260602T140000
DTEND;TZID=Europe/Paris:20260602T150000
DTSTAMP:20260613T151907
CREATED:20260528T154225Z
LAST-MODIFIED:20260528T154225Z
UID:10000164-1780408800-1780412400@sfp-alpes.fr
SUMMARY:Marielena VELASCO-ENRIQUEZ (LMGP\, Institut Néel)
DESCRIPTION:Chemical pathways to obtain Ga2O3 films for next generation power electronics and optoelectronics\nRésumé : \nUltrawide bandgap semiconductors like β-Ga2O3 are promising candidates for power electronics and optoelectronics thanks to their large bandgap energy (4.6 – 4.9 eV)\, high breakdown electric field (~8 MV/cm)\, broadband photodetection\, and availability of high-quality substrates.[1] Beyond the thermodynamically stable β-Ga2O3\, metastable polymorphs (α\, γ\, δ\, κ) may offer additional functionalities\, including piezoelectricity (κ-phase).[2] \nThis work explores two different chemical approaches in vapor phase and aqueous solution to grow Ga₂O₃ thin films and microstructures on c-plane sapphire substrates. First\, pulsed-liquid injection MOCVD (PLI-MOCVD)\, that unlike conventional MOCVD systems\, enables fine control over precursor delivery and dosing\, improving chemical yield and reducing gallium waste\, an important sustainability consideration.[3] Second\, chemical bath deposition (CBD) followed by thermal annealing that offers a low-cost\, tunable pathway to obtain crystalline Ga₂O₃\,[4] though the link between growth parameters and final properties remains poorly understood. \nBy adapting and systematically investigating both methods\, the impact of key parameters on morphology\, structure\, chemistry\, and optical properties using a broad range of characterization techniques (SEM\, XRD\, TEM\, XPS\, Raman\, UV-Vis\, cathodoluminescence\, etc.) is studied. This comparative approach provides insight into the assets and limitations of each technique for controlled Ga₂O₃ synthesis. \n[1]        J. Y. Tsao et al.\, “Ultrawide-Bandgap Semiconductors: Research Opportunities and Challenges\,” Advanced Electronic Materials\, vol. 4\, no. 1\, p. 1600501\, 2018\, doi: 10.1002/aelm.201600501. \n[2]        M. Bosi\, P. Mazzolini\, L. Seravalli\, and R. Fornari\, “Ga 2 O 3 polymorphs: tailoring the epitaxial growth conditions\,” Journal of Materials Chemistry C\, vol. 8\, no. 32\, pp. 10975–10992\, 2020\, doi: 10.1039/D0TC02743J. \n[3]        H. Guillon and S. Bonnafous\, “Vaporization of Solid or Liquid Organic\, Organometallic or Inorganic Compounds\,” no. Gases&Instrumentation\, pp. 17–19\, Jun. 2008. \n[4]        G. Hector et al.\, “Chemical Synthesis of β-Ga2O3 Microrods on Silicon and Its Dependence on the Gallium Nitrate Concentration\,” Inorg. Chem.\, vol. 59\, no. 21\, pp. 15696–15706\, Nov. 2020\, doi: 10.1021/acs.inorgchem.0c02069. \nShort Bio/CV \nOriginally from the Amazonian region of Peru. I earned my Bachelor’s in Engineering physics at Universidad Nacional de Ingeniería in Lima\, Peru. After conducting research in Peru and abroad on soft robotics\, plasma physics\, and material science\, I moved into industry as an R&D Engineer in the automotive sector\, designing and testing eGlasses. Three years later\, I pursued the Erasmus Mundus Master in Nanoscience and Nanotechnology\, specializing in nanoelectronics at KU Leuven (Belgium) and TU Dresden (Germany). Since 2023\, I have been a PhD candidate at Université Grenoble Alpes\, working across LMGP and Institut Néel as part of the cross-disciplinary program PowerAlps from. \n_ \nContact : deborah.verger@grenoble-inp.fr 
URL:https://sfp-alpes.fr/event/marielena-velasco-enriquez-lmgp-institut-neel/
LOCATION:LMGP – salle des séminaires\, Grenoble INP -Phelma 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260602T150000
DTEND;TZID=Europe/Paris:20260602T160000
DTSTAMP:20260613T151907
CREATED:20260529T085706Z
LAST-MODIFIED:20260529T085706Z
UID:10000166-1780412400-1780416000@sfp-alpes.fr
SUMMARY:Christophe VALLEE (College of Nanotechnology\, Science\, and Engineering (CNSE) - University at Albany - SUNY)
DESCRIPTION:Le dépôt sélectif par zone (ASD) : de la substitution de la lithographie à son amélioration\nRésumé : \nDans cet exposé\, nous allons présenter le dépôt sélectif par zone (Area Selective Deposition) et illustrer le fait que ce procédé\, initialement développé pour supprimer des étapes de lithographie\, peut être aussi utilisé pour améliorer ces étapes. \nDans un premier temps\, nous introduirons les différentes façons de faire un dépôt sélectif par zone\, puis nous donnerons quelques exemples d’application. Ensuite\, nous discuterons des interactions entre ce procédé et des matériaux polymères afin de démontrer que les polymères peuvent être utilisés comme inhibiteurs dans un procédé ASD. De plus\, nous montrerons que le procédé ASD peut aussi être réalisé directement sur des polymères\, pour améliorer certaines de leurs propriétés telles que leur rugosité de surface et leur résistance à la gravure plasma. Nous finirons en donnant un exemple de dépôt sélectif « vertical » combinant à la fois une gravure sélective du polymère par effet catalytique et un dépôt sélectif par zone. \nShort Bio/CV \nChristophe Vallée est professeur à l’Université Grenoble Alpes jusqu’en 2020\, spécialisé dans les procédés plasma. Il a mené ses recherches au Laboratoire des Technologies de la Microélectronique (LTM) – Polytech Grenoble\, ainsi qu’en tant que professeur invité à l’Université de Tsukuba au Japon (2016–2020). En 2020\, il y a été nommé premier «TEL Innovation Scientist»\, soutenu par une dotation de 2\,3 millions de dollars pour le développement de technologies avancées au service de l’industrie des semi-conducteurs. Depuis 2022\, il est professeur permanent au CNSE de l’Université d’Albany (État de New York). Ses recherches portent sur la gravure plasma\, le dépôt plasma et les procédés à l’échelle atomique (ALD\, ALE)\, appliqués à la fabrication de dispositifs semi-conducteurs. \n_ \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/christophe-vallee-college-of-nanotechnology-science-and-engineering-cnse-university-at-albany-suny/
LOCATION:Phelma minatec\, Salle Z108\, Grenoble INP - Phelma\, 3 parvis Louis Néel\, Grenoble\, 38000\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260603T110000
DTEND;TZID=Europe/Paris:20260603T120000
DTSTAMP:20260613T151907
CREATED:20260529T091746Z
LAST-MODIFIED:20260529T091746Z
UID:10000167-1780484400-1780488000@sfp-alpes.fr
SUMMARY:Arjun DEY (Paul Scherrer Institute)
DESCRIPTION:Excitation energies from ground-state DMRG on the fuzzy sphere\nRésumé : \nIt has been observed that some eigenvalues of the effective local Hamiltonian built during a ground-state DMRG sweep of a one-dimensional critical chain stay nearly flat across iterations. Those flat levels correspond to true low-energy excitations\, giving access to the excitation spectrum at no extra cost. We ask whether the same holds on the fuzzy sphere\, a geometry used to study two-dimensional critical theories by mapping them onto a one-dimensional orbital chain. Getting excited states there directly is costly. We find numerical evidence that flat levels appear in the eigenvalues of the effective local Hamiltonian during our sweeps and match the expected low-energy spectrum. The symmetries of the fuzzy sphere and orthogonalization across symmetry sectors introduce additional structure into those eigenvalues\, which helps in resolving and assigning the excitations. \n_ \nContact : loic.herviou@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/arjun-dey-paul-scherrer-institute/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260604T113000
DTEND;TZID=Europe/Paris:20260604T123000
DTSTAMP:20260613T151907
CREATED:20260528T151721Z
LAST-MODIFIED:20260528T151721Z
UID:10000161-1780572600-1780576200@sfp-alpes.fr
SUMMARY:Timothée PROIX (ETH Zurich)
DESCRIPTION:Neural manifolds for speech processing\nRésumé : \nSpeech comprehension requires the brain to represent and combine phonetic\, lexical\, and semantic information across a linguistic hierarchy. Yet how neuronal populations implement these representations and compositions remains unclear. In this talk\, I will show how the framework of neural manifolds offers a powerful lens for this question\, combining intracranial recordings in the human cortex with population-level analyses and computational modeling.\nI will show that linguistic features are encoded as distinct trajectories on low-dimensional manifolds\, which can be resolved analytically by fitting recurrent neural networks directly to the neural data. I will then discuss how these trajectory-based representations are combined across levels\, from the composition of phonetic features into syllables\, to the interactions between phonetic and semantic representations. Together\, these perspectives point toward a population-level mechanism for the representation and composition of speech processing. \nContact : michael.pereira@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/timothee-proix-eth-zurich/
LOCATION:GIN – Amphi Serge Kampf\, Grenoble Institut des Neurosciences (GIN) Bât. Edmond J. Safra\, Chemin Fortune Ferrini CHU\, La Tronche\, 38700\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260604T140000
DTEND;TZID=Europe/Paris:20260604T150000
DTSTAMP:20260613T151907
CREATED:20260528T152555Z
LAST-MODIFIED:20260528T152555Z
UID:10000162-1780581600-1780585200@sfp-alpes.fr
SUMMARY:Nan TANG (University of Augsburg)
DESCRIPTION:New Macroscopic Windows into Spin Ice : From Emergent Monopoles to Quadrupolar Fluctuations\nRésumé : \nSpin ice\, a representative class of frustrated magnets\, provides a rich platform for exploring phenomena such as fractionalized excitations and multipolar degrees of freedom\, which remain difficult to access using conventional magnetic probes. In this seminar\, I will show how thermodynamic measurements\, especially elastic probes\, together with spintronics technique (in particular the spin Seebeck effect)\, can serve as practical detectors of these degrees of freedom. \nI will develop this theme via two studies in the pyrochlore oxides Pr2​Zr2​O7​ and Dy2​Ti2​O7​\, known as spin ices. First\, I will show how bulk thermodynamic measurements\, centered around elastic probes\, can diagnose quantum spin ice physics in Pr2​Zr2​O7​ [1]. Second\, I will discuss how transport-sensitive measurements in an insulator—through the spin Seebeck effect—can access the dynamics of emergent magnetic monopoles in the classical spin ice Dy2​Ti2​O7​ [2]. Together\, these two studies demonstrate how lattice-based probes and spintronic tools can be brought to bear on frustrated magnets\, providing new routes to detect low-energy degrees of freedom. \nIn this way\, precision thermodynamics and modern transport-sensitive techniques can reveal new physics even in long-studied frustrated magnets\, enabling direct comparison with theory through sharp macroscopic signatures. \n[1] N. Tang et al.\, Nat. Phys. 19\, 92-98 (2023).\n[2] N. Tang et al.\, preprint\, arXiv.2509.18422 (2025).\n  \n_ \nContact : elsa.lhotel@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/nan-tang-university-of-augsburg/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260604T140000
DTEND;TZID=Europe/Paris:20260604T150000
DTSTAMP:20260613T151907
CREATED:20260529T150404Z
LAST-MODIFIED:20260529T150404Z
UID:10000176-1780581600-1780585200@sfp-alpes.fr
SUMMARY:Aurélien DE LA TORRE (ICMMO\, CNRS/Université Paris-Saclay)
DESCRIPTION:Designing cycloadditions to enable total synthesis\nRésumé : \nAsymmetric catalysis is a key topic in organic synthesis\, as it allows the formation of new bonds while controlling stereogenic centers\, which are inherent to natural products and biologically active substances. On the other hand\, dual catalysis is an efficient approach to operate multiple chemical operations through a one-pot process. In this presentation\, we will discuss our recent developments in asymmetric catalysis and dual catalysis\, as well as their application to a concrete total synthesis\nproblem. \n_ \nContact : adrien.quintard@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/aurelien-de-la-torre-icmmo-cnrs-universite-paris-saclay/
LOCATION:DCM – Salle C209\, DCM - Bât Chimie Recherche 301 rue de la Chimie\, St Martin d'Hères\, 38400\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260604T160000
DTEND;TZID=Europe/Paris:20260604T170000
DTSTAMP:20260613T151907
CREATED:20260213T142628Z
LAST-MODIFIED:20260213T143322Z
UID:10000071-1780588800-1780592400@sfp-alpes.fr
SUMMARY:Sophie GUERON
DESCRIPTION:Explorer les isolants topologiques avec la physique mésoscopique\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/12406/ \nContact : louis.fayard@IJCLAB.INP3.FR
URL:https://sfp-alpes.fr/event/sophie-gueron/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260605T123000
DTEND;TZID=Europe/Paris:20260605T131500
DTSTAMP:20260613T151907
CREATED:20260521T135745Z
LAST-MODIFIED:20260521T140108Z
UID:10000153-1780662600-1780665300@sfp-alpes.fr
SUMMARY:John MARTINEZ (Professeur - Grenoble INP-UGA\, Ense3\, GIPSA-Lab)
DESCRIPTION:Un nouveau modèle du frottement… Et un nouveau paradigme ?\nRésumé : \nDes résultats issus d’une collaboration avec Michelin\, dans le cadre du Laboratoire Commun I-TireLab (CNRS\, Université de Poitiers\, Grenoble INP-UGA\, UGA)\, nous permettront de réfléchir sur le caractère et la nature du frottement. Nous allons présenter un nouveau modèle qui pourrait modifier notre vision personnelle sur le frottement. \nIl s’agit d’un modèle macroscopique inspiré des théories liées aux machines à induction. Dans cette présentation\, nous illustrerons sa capacité à prédire les forces de frottement dans divers scénarios réels. \nÀ propos de l’intervenant \nJohn Martinez est docteur en Automatique à Grenoble INP-UGA depuis 2005 et enseignant-chercheur depuis 2007. Ses recherches portent sur la modélisation et le contrôle-commande des systèmes mécatroniques\, principalement dans des domaines d’application liés à la dynamique automobile\, au contrôle optimal des éoliennes et aux vélos électriques intelligents. \n_ \nContact : giant.campus@cea.fr
URL:https://sfp-alpes.fr/event/john-martinez-professeur-grenoble-inp-uga-ense3-gipsa-lab/
LOCATION:Amphi Minatec\, 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="GIANT":MAILTO:giant.campus@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260609T140000
DTEND;TZID=Europe/Paris:20260609T150000
DTSTAMP:20260613T151907
CREATED:20260529T080157Z
LAST-MODIFIED:20260529T080157Z
UID:10000165-1781013600-1781017200@sfp-alpes.fr
SUMMARY:Soline BEITONE (PhD Student - LMGP)
DESCRIPTION:Development and evaluation of a photocatalytic system to reduce and valorize CO2\nRésumé : \nThis work focuses on the development of a photocatalytic system for CO₂ reduction and valorization\, contributing to sustainable carbon conversion strategies. The study investigates Cu₂O nanowire (NW)-based photocatalyst\, selected for their visible-light activity\, abundance\, and low toxicity. \nA simple\, scalable\, and cost-effective fabrication strategy was developed to produce such photocatalyst. To enhance performance and stability\, the materials were further engineered through TiO₂ nanoparticle modification\, enabling the formation of p–n heterojunctions that improve charge separation\, stability and light utilization. \nThe resulting photocatalysts were evaluated for CO₂ conversion into value-added products and water depollution through dye degradation. \nFinally\, a life cycle perspective was incorporated to assess environmental impacts\, sustainability benefits\, and the scalability potential of these photocatalytic systems. \nShort Bio/CV \nI am a third-year PhD student with a background in materials science and chemistry. My research focuses on photocatalysis and materials development\, with an emphasis on green and sustainable approaches. \nI am part of the NABIOS team\, and my PhD project is integrated into DéfiCO₂\, a multidisciplinary initiative aimed at developing and evaluating technological solutions for carbon capture and utilization (CCU). \n_ \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/soline-beitone-phd-student-lmgp/
LOCATION:LMGP – salle des séminaires\, Grenoble INP -Phelma 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260609T140000
DTEND;TZID=Europe/Paris:20260609T150000
DTSTAMP:20260613T151907
CREATED:20260604T105036Z
LAST-MODIFIED:20260605T084741Z
UID:10000181-1781013600-1781017200@sfp-alpes.fr
SUMMARY:Jean-Claude BESSE (Department of Physics\, ETH Zurich\, CH-8093 Zurich\, Switzerland)
DESCRIPTION:Execution of Blind Quantum Computing Primitives on a Modular Superconducting Processor\nRésumé : \nAs a route towards a cluster of interconnected processors in a quantum network\, the Quantum Device Lab’s approach to short-range modularity uses small modules with high fabrication yield flip-chip bonded to a common carrier chip. In the first part of this talk\, we focus on the hardware realization of this 3D-integrated architecture with indium bump bonds\, inter-chip spacing control\, and parameter targeting enabling high-fidelity operations 1\,2. We then leverage this technology in a two-module processor\, with three qubits per node 3. The first module acts as a server generating cluster states as entangled quantum resource. The second module acts as a client\, consuming the resource through real-time adaptive measurement basis choice. We demonstrate that the client can implement universal single- and two-qubit gates with local measurements and rotations only. As an example of blind quantum computation\, we show results of a measurement-based Deutsch-Jozsa algorithm. We verify that the computation remains private\, that is\, the server’s state doesn’t reveal the client’s algorithm nor its result. This demonstrates that cloud quantum providers can be set up in a way that they respect the data privacy of their clients 4. \n1 Norris et al.\, EPJ Quant. Tech. 11\, 5 (2024) 2 Norris et al.\, EPJ Quant. Tech. 13\, 29 (2026) 3 Dalton et al.\, PRX Quantum 6\, 040365 (2025) 4 Song et al.\, arXiv:2605.14656 (2026) \n_ \nContact : sem_nano_elec_quantique@listes.grenoble.cnrs.fr
URL:https://sfp-alpes.fr/event/jean-claude-besse-department-of-physics-eth-zurich-ch-8093-zurich-switzerland/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260610T110000
DTEND;TZID=Europe/Paris:20260610T120000
DTSTAMP:20260613T151907
CREATED:20260604T110614Z
LAST-MODIFIED:20260604T110614Z
UID:10000182-1781089200-1781092800@sfp-alpes.fr
SUMMARY:Mahdi ABOU-HAMDAN (LPMMC)
DESCRIPTION:TITRE A VENIR\n_ \nContact : pierre.nataf@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/mahdi-abou-hamdan-lpmmc/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260611T113000
DTEND;TZID=Europe/Paris:20260611T123000
DTSTAMP:20260613T151907
CREATED:20260605T140154Z
LAST-MODIFIED:20260605T140154Z
UID:10000192-1781177400-1781181000@sfp-alpes.fr
SUMMARY:Kirill NOURSKI (University of Iowa\, USA)
DESCRIPTION:What the insula hears and does : Insights from human intracranial electrophysiology\nRésumé : \nThe human insula is known to be involved in auditory processing\, though its detailed response properties remain elusive. Intracranial recordings in human neurosurgical patients provide a unique opportunity to characterize the functional properties of the human insula with high spatiotemporal resolution. Local field potential recordings reveal that posterior insula (InsP) is characterized by larger broadband gamma (30-150 Hz) responses to monosyllabic words compared to anterior insula (InsA). Both subdivisions of the insula generate evoked responses to novel sounds. Single neurons within InsP and\, to a lesser extent\, InsA\, respond to simple sounds in the absence of a behavioral context. InsP and InsA share similar res9ng state functional connectivity profiles with limbic structures. InsP is more closely linked to activity propagated from early auditory cortex\, while InsA is more tightly coupled with prefrontal\, anterior temporal regions and the amygdala. Clinical case studies identify language and music perception deficiencies associated with insula lesions. Finally\, single unit recordings during emergence from general anesthesia reveal a temporal dissociation between reactivation of limbic structures and the insula\, the laPer marking the transition to connected consciousness and the capacity to act on commands. Together\, these results begin to characterize the insula’s place in the auditory hierarchy\, with implications ranging from sensory processing to conscious awareness of our surroundings. \n_ \nContact : julien.bastin@univ-grenoble-alpes.fr \n  \n 
URL:https://sfp-alpes.fr/event/kirill-nourski-university-of-iowa-usa/
LOCATION:GIN – Amphi Serge Kampf\, Grenoble Institut des Neurosciences (GIN) Bât. Edmond J. Safra\, Chemin Fortune Ferrini CHU\, La Tronche\, 38700\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260611T130000
DTEND;TZID=Europe/Paris:20260611T140000
DTSTAMP:20260613T151907
CREATED:20260507T093550Z
LAST-MODIFIED:20260604T104156Z
UID:10000147-1781182800-1781186400@sfp-alpes.fr
SUMMARY:Anne LOPES (I2BC - Gif sur Yvette)
DESCRIPTION:Emergence of microproteins and de novo genes from noncoding DNA\n_ \nContact : lucie.lamothe@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/anne-lopes-i2bc-gif-sur-yvette/
LOCATION:IMAG – Salle de Réunion\, 150 place du Torrent\, St Martin d’Hères\, 38400\, France
CATEGORIES:Séminaire
ORGANIZER;CN="TIMC - IMAG":MAILTO:lucie.lamothe@univ-grenoble-alpes.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260612T110000
DTEND;TZID=Europe/Paris:20260612T120000
DTSTAMP:20260613T151907
CREATED:20260604T132045Z
LAST-MODIFIED:20260604T132045Z
UID:10000183-1781262000-1781265600@sfp-alpes.fr
SUMMARY:Benjamin LENZ (IMPMC)
DESCRIPTION:Spectroscopic signatures of spin-polarons in quasi two-dimensional correlated materials\nRésumé : \nThe motion of a single hole in a two-dimensional antiferromagnet can lead to the formation of a low-energy quasiparticle\, a so-called spin-polaron\, which amounts to a bound state of the doped hole and a spin flip. In this talk\, I will first introduce the notion of spin-polarons and then discuss spectroscopic signatures of this quasiparticle at the example of two different material classes which both host quasi two-dimensional low-energy physics in their correlated electronic structure.\nIllustrated by the Na-doped oxychloride Ca2CuO2Cl2\, we will see how the spin-polaron gives rise to “kink” and “waterfall” features in the spectral function of hole-doped cuprates. Employing a numerical workflow comprising density functional theory and cluster dynamical mean-field theory\, we will discuss these features in comparison to measurements obtained from angle-resolved photoemission spectroscopy. As a second example\, we will see that spin-polaron physics is also relevant in two prototypical iridates\, (Ba\,Sr)2IrO4\, which host an exotic spin-orbital entangled jeff=1/2 ground state. In particular\, the characteristic two-peak structure of their optical absorption and optical conductivity curves will be revisited and interpreted in the light of these coherent low-energy quasiparticles. \nB. Bacq-Labreuil et al.\, Phys. Rev. Lett. 134\, 016502 (2025)\nF. Cassol et al.\, arXiv:2509.20337; accepted in Phys. Rev. B (2026) \n_ \nContact : serge.florens@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/benjamin-lenz-impmc/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260612T110000
DTEND;TZID=Europe/Paris:20260612T120000
DTSTAMP:20260613T151907
CREATED:20260604T142423Z
LAST-MODIFIED:20260604T142423Z
UID:10000187-1781262000-1781265600@sfp-alpes.fr
SUMMARY:Alexandra COLIN (CEA-Irig/LPCV)
DESCRIPTION:Dynamics and Scaling of Competitive Actin Architectures\nRésumé : \n\nCells constantly experience environmental changes requiring a fast adaptation of their different actin structures. However\, the mechanisms governing the size and dynamics of these multiple actin structures remain unknown. Decoupling the various parameters that would provide a complete understanding of these mechanisms is very complicated in a cellular context. This is why we have developed a bottom-up approach to identify the key molecular mechanisms that determine the size and coexistence of multiple competing actin architectures. We used a reconstituted system consisting of purified proteins and substrates to localize actin polymerization in microwells\, enabling us to work with a limited number of components. With this system\, we reconstituted several dynamic actin architectures\, competing for a limited pool of protein\, over a period of multiple hours. This allowed us to gain key insights into physiological functions related to actin turnover. I will show how we used this system to study the limits of scaling in dynamic structures\, as well as the limits of coexistence in actin networks under resource-limited conditions. Finally\, I will show how we can recapitulate these results in a complementary cellular system\, in which we have demonstrated that an increase in spreading area leads to a decrease in overall turnover\, due to a predominance of structures with low turnover.​​​​​\n​\n\n\n\nLes séminaires et soutenances sont ouverts à tous\, notez toutefois que l’accès au campus EPN nécessite un avis de rendez-vous. Merci de remplir ce formulaire  et de l’adresser\, plus de 48h à l’avance\, à ce contact.\nPensez à vous munir d’une pièce d’identité le jour de votre visite.
URL:https://sfp-alpes.fr/event/alexandra-colin-cea-irig-lpcv/
LOCATION:IBS – Salle des séminaires\, IBS 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
ORGANIZER;CN="IRIG - CEA":MAILTO:odile.rossignol@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260615T110000
DTEND;TZID=Europe/Paris:20260615T120000
DTSTAMP:20260613T151907
CREATED:20260529T122925Z
LAST-MODIFIED:20260529T122925Z
UID:10000168-1781521200-1781524800@sfp-alpes.fr
SUMMARY:Richard HOLZ (School of Mines\, Golden\, Colorado\, USA)
DESCRIPTION:Targeting Iron-Sulfur Cluster Biosynthesis in Staphylococcus aureus : Mechanistic Insights into the SUF Pathway\n_ \nL’accès au CEA Grenoble nécessite un avis de rendez-vous. Merci d’envoyer la copie de votre pièce d’identité à sandrine.ollagnier@cea.fr\, avant le 08 juin 2026.\nPensez à vous munir de cette pièce d’identité le jour de votre visite. \n  \n 
URL:https://sfp-alpes.fr/event/richard-holz-school-of-mines-golden-colorado-usa/
LOCATION:CEA – Salle de séminaire IRIG (104 – bâtiment C3)\, 17\, avenue des Martyrs\, Grenoble\, 38000\, France
CATEGORIES:Séminaire
ORGANIZER;CN="IRIG - CEA":MAILTO:odile.rossignol@cea.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260615T110000
DTEND;TZID=Europe/Paris:20260615T120000
DTSTAMP:20260613T151907
CREATED:20260611T102519Z
LAST-MODIFIED:20260611T102519Z
UID:10000193-1781521200-1781524800@sfp-alpes.fr
SUMMARY:Luis Alberto RAZO LOPEZ (Institut Langevin\, Paris)
DESCRIPTION:Phase retrieval based on intensity-only spatiotemporal wavefront shaping\nRésumé : \nWe introduce a phase retrieval framework based solely on intensity measurements and intensity-only spatiotemporal modulation. Our approach leverages spatiotemporal wavefront shaping to encode phase information into temporally multiplexed intensity signals\, which are subsequently decomposed in the Fourier domain. We show that the resulting temporal harmonics correspond to spiral-phase–modulated speckle components\, enabling the retrieval of phase information without direct phase-sensitive detection. We derive the harmonic structure induced by a rotating angular aperture mask and demonstrate that each harmonic carries a distinct spiral phase and amplitude weighting governed by a sinc envelope. Based on this structure\, we develop an optimization-based reconstruction algorithm that retrieves both the unknown diffuser phase and system scaling without prior knowledge of the optical transfer function. Experimental results confirm accurate reconstruction of diffuser surfaces and aberration correction\, including refocusing through digital micromirror device (DMD)-induced distortions. \nContact : dorian.bouchet@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/luis-alberto-razo-lopez-institut-langevin-paris/
LOCATION:LiPhy – Salle de conférence\, LiPhy 140 avenue de la Physique\, St Martin d'Hères\, 38402\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260616T140000
DTEND;TZID=Europe/Paris:20260616T150000
DTSTAMP:20260613T151907
CREATED:20260611T103209Z
LAST-MODIFIED:20260611T103209Z
UID:10000194-1781618400-1781622000@sfp-alpes.fr
SUMMARY:Roger TORMO-QUERALT (Institute of Photonic Sciences (ICFO)\, Barcelona\, Spain)
DESCRIPTION:Carbon Nanotube Electromechanical Oscillators: where photons\, phonons and electrons meet\nRésumé : \nAchieving strong mechanical nonlinearities\, minimally invasive detection\, and control at the few-phonon level is a central challenge in the development of mechanical oscillators for quantum technologies\, including quantum information processing (1\,2)\, precision sensing (3)\, and tests of quantum mechanics (4\,5). In our group\, we aim to realize these capabilities using suspended carbon-nanotube mechanical oscillators coupled to electronic quantum dots. In this talk\, I will present results obtained with a device operating in the exotic dispersive ultrastrong-coupling regime (6\,7)\, where the interaction strength between a nanotube mechanical oscillator and a double-quantum-dot electronic two-level system (DQD-ETLS) exceeds the bare energy of the oscillator. In this regime\, we demonstrate a mechanical Kerr oscillator with an anharmonicity exceeding the state of the art for mechanical systems by four orders of magnitude (8). We read out the mechanical states using a superconducting cavity coupled to the square displacement (x²) of the oscillator (8)\, paving the way towards future quantum non-demolition (QND) cavity-based readout of mechanical Fock states (9). I will also show that the decay and decoherence rates of our ETLS charge qubit outperforms the current state of the art for 2DEG-based systems\, reaching the highest coherence values ever measured in a charge-based DQD-ETLS (10). \n1 A. D. O’Connell\, et al. Nature 464 (2010)\n2 Y. Yang\, et al. A mechanical qubit\, 386 (6723) (2024)\n3 F. Pistolesi\, et al. Phys. Rev. X\, 11\, 031027 (2021)\n4 M.F. Gely et al.\, AVS Quantum Sci. 3\, 035601 (2021)\n5 Oriol Romero-Isart. et\, al. Physical Review A\, 84 (2011)\n6 C. Samanta et al\, Nat. Phys. 19 (2023)\n7 P. Forn-Díaz et al.\, Rev. Mod. Phys (2019)\n8 C.B. Moller*\, R.Tormo-Queralt* (under review) 9 P. Arrangoiz-Ariola\, Nature volume 571 (2019)\n10 P. Scarlino Phys. Rev. Lett. 122\, 206802 (2019) \n_ \nContact : equipe-seminaires-nano@listes.grenoble.cnrs.fr
URL:https://sfp-alpes.fr/event/roger-tormo-queralt-institute-of-photonic-sciences-icfo-barcelona-spain/
LOCATION:CNRS – Salle Rémy Lemaire (K223)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260617T110000
DTEND;TZID=Europe/Paris:20260617T120000
DTSTAMP:20260613T151907
CREATED:20260611T105930Z
LAST-MODIFIED:20260612T140333Z
UID:10000195-1781694000-1781697600@sfp-alpes.fr
SUMMARY:Mohamed AMDDAH (LPMMC)
DESCRIPTION:Dissipative Dynamics of Phase Slips in SNS Junctions\n_ \nContact : pierre.nataf@lpmmc.cnrs.fr
URL:https://sfp-alpes.fr/event/mohamed-amddah-lpmmc/
LOCATION:LPMMC – salle Roger Maynard (G421)\, CNRS - LPMMC 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260619T093000
DTEND;TZID=Europe/Paris:20260619T103000
DTSTAMP:20260613T151907
CREATED:20260529T151254Z
LAST-MODIFIED:20260529T151254Z
UID:10000178-1781861400-1781865000@sfp-alpes.fr
SUMMARY:Alain WALCARIUS (Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l’Environnement (LCPME)\, UMR Université de Lorraine-CNRS 7564\, Equipe Chimie et Electrochimie Analytiques\, Nancy)
DESCRIPTION:Intérêt des membranes de silice à porosité orientée en électrochimie analytique et au delà\n_ \nContact : andrew.gross@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/alain-walcarius-laboratoire-de-chimie-physique-et-microbiologie-pour-les-materiaux-et-lenvironnement-lcpme-umr-universite-de-lorraine-cnrs-7564-equipe-chimie-et-electrochimie-analytiques/
LOCATION:DCM – Bât Nanobio\, DCM 570 rue de la Chimie\, St Martin d'Hères\, 38400\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260619T110000
DTEND;TZID=Europe/Paris:20260619T120000
DTSTAMP:20260613T151907
CREATED:20260604T132608Z
LAST-MODIFIED:20260604T133618Z
UID:10000184-1781866800-1781870400@sfp-alpes.fr
SUMMARY:Jonathan HOME (ETH Zürich)
DESCRIPTION:Scaling trapped-ion quantum computers\nRésumé : \nTrapped ions are among the most promising paths to realizing quantum computers\, having exhibited the highest fidelity gates and long coherence times. Scaling up will require the adoption of new technologies\, and can be facilitated by new approaches. In this talk I will describe recent work from our group in both directions. Firstly I will describe the use of integrated optics to deliver light to multiple zones of an ion trap chip in scalable manner\, and give an impression of the new types of control which might be enabled by this approach 1\,2\,3. I will then introduce a new concept for scaling trapped-ion quantum computers based on microfabricated Penning traps\, introducing flexible 2-dimensional ion transport while removing the need for high-voltage radio-frequency fields and thus improving compatibility with standardized chip fabrication 4\,5. We have used this to perform sensing of both static and oscillating magnetic and electric fields near the chip surface\, and more recently demonstrated multi-qubit gates and control of multi-dimensional arrays of ions. \n1 K. Mehta et al. Nature 586\, 533–537 (2018)\n2 A. Ricci et al. Phys. Rev. Lett. 130\, 133201 (2023)\n3 C. Mordini et al. Physical Review X 15\, 011040 (2025)\n4 S. Jain et al. Physical Review X 10\, 031027 (2021)\n5 S. Jain et al. Nature 627\, 8004\, pp. 510–514 (2024) \n_ \nContact : michele.filippone@cea.fr
URL:https://sfp-alpes.fr/event/jonathan-home-eth-zurich/
LOCATION:GreenER – Amphi Bergès\, GreenER\, 21 avenue des Martyrs\, Grenoble\, 38031\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260622T140000
DTEND;TZID=Europe/Paris:20260622T150000
DTSTAMP:20260613T151907
CREATED:20260522T124820Z
LAST-MODIFIED:20260522T124835Z
UID:10000160-1782136800-1782140400@sfp-alpes.fr
SUMMARY:Maurizio SACCHI (CNRS - Institut des NanoSciences de Paris and Synchrotron SOLEIL)
DESCRIPTION:X-rays with Orbital Angular Momentum for spectroscopy and imaging\nRésumé : \nIn addition to the spin angular momentum (SAM) associated to the light polarization\, Laguerre-Gaussian light beams carry also an orbital angular momentum (OAM) of ℓ /photon [1]ℏ associated to an azimuthal dependence exp(iℓϕ) of the electric field phase. Over the last thirty years\, OAM beams at vis-IR wavelengths found applications in fields as different as biology\, telecommunication and imaging [2]. The azimuthal phase dependence\, with a singularity on the propagation axis\, is accompanied by a radial modulation of the intensity (ring-shaped beams)\, properties that have been used to modify local magnetic ordering\, to improve the spatial resolution in microscopy\, and to enhance the edge sharpness in phase-contrast imaging. \nOver the last decade\, several approaches to the generation of OAM beams at shorter wavelengths\, from XUV to hard x-rays\, were proposed. Potential applications are often based on the extrapolation of previous work carried out in the vis-IR range. For instance\, as for the SAM\, the handedness imposed by the OAM has been exploited to study magnetic materials [3] and chiral molecules [4]. The interest of extending the use of OAM beams from the vis-IR to the x-ray range has been growing steadily over the last few years. Nonetheless\, the offer of user accessible beamlines and endstations remains limited\, especially when one aims at independently varying both SAM and OAM in a controlled way. At the SEXTANTS beamline of the SOLEIL synchrotron\, we have implemented and commissioned a new setup for soft x-ray spectroscopy (absorption and resonant scattering experiments) with OAM beams [5]. \n1. L. Allen at al.\, Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes\, Phys. Rev. A 45\, 8185 (1992).\n2. Y. Shen et al.\, Optical vortices 30 years on: OAM manipulation from topological charge to multiple singularities\, Light: Science & Applications 8\, 90 (2019).\n3. M. Fanciulli et al.\, Electromagnetic theory of Helicoidal Dichroism in reflection from magnetic structures\, Phys. Rev. A 103\, 013501 (2021); Observation of magnetic helicoidal dichroism with extreme ultraviolet light vortices\, Phys. Rev. Lett. 128\, 077401 (2022); Magnetic vortex dynamics probed by time-resolved magnetic helicoidal\ndichroism\, Phys. Rev.Lett. (2025).\n4. J. R. Rouxel et al.\, Hard X-ray helical dichroism of disordered molecular media\, Nature Phot. 16\, 570 (2022).\n5. P. Carrara et al.\, Soft x-rays with Orbital Angular Momentum for resonant scattering experiments at the SOLEIL synchrotron\, J. Synchr. Rad. 33\, 858 (2026). \nContact : matteo.dastuto@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/maurizio-sacchi-cnrs-institut-des-nanosciences-de-paris-and-synchrotron-soleil/
LOCATION:CNRS – Salle Louis Weil (E424)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260623T100000
DTEND;TZID=Europe/Paris:20260623T110000
DTSTAMP:20260613T151907
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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