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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260721T140000
DTEND;TZID=Europe/Paris:20260721T150000
DTSTAMP:20260709T121303Z
CREATED:20260709T121303Z
LAST-MODIFIED:20260709T121303Z
UID:10000218-1784642400-1784646000@sfp-alpes.fr
SUMMARY:Ben HUMPHREYS (Institut Laue-Langevin (ILL) Grenoble\, France)
DESCRIPTION:Advancing our Understanding of Responsive Polymer Brushes\nRésumé : \n\nInterfacial properties of a surface can be extensively modified through the addition of a polymer brush layer; a dense array of end-tethered polymers grafted to a surface. When a polymer brush is synthesised with a stimulus responsive polymer\, the surface properties can be tailored to respond\, often reversibly\, to external stimuli such as temperature\, light\, pH\, solvent or electric fields. While these so-called smart materials are particularly promising for high-value applications such as sensors\, nanoactuation and microfluidics\, their response can be significantly influenced by additives such as osmolytes and salts. Unlike untethered polymer systems\, research into the influence of additives for responsive polymer brushes has been sparse\, yet this knowledge is crucial when advancing their utilisation in biomedical and industrial applications. \nThroughout my research career I have primarily focused on the influence of salts and osmolytes on temperature and pH responsive homo- and co-polymer brushes. I will firstly discuss my synthetic methodologies and choice of responsive polymers. This will be followed by a comprehensive outline of the approaches used to investigate these responsive coatings. Here\, starting with the simplest systems\, then gradually increasing complexity\, I have been able to systematically understand the influence of individual additives/changes. This information is invaluable when considering the complex real-world applications that can benefit from the utilisation of smart\, responsive polymer brush surface coatings. \nShort Bio/CV\nIn 2015 I graduated from the University of Newcastle\, Australia\, with a Bachelor of Science\, 1st class honors\, majoring in Chemistry\, followed by my PhD at the same university (2015-2019) titled “Nanostructure of Temperature Responsive Polymer Brushes Modulated by Salt Identity”. I then accepted a post-doc position at Lund University in Sweden\, investigating the internal structural changes of a triglyceride film throughout enzymatic digestion\, with particular focus on the influence of pH and how this influences the species present throughout the lipolytic process. In 2023 I started in my current position as instrument responsible for the D17 neutron reflectometer at the ILL where I have re-established my research on responsive polymer brushes with a focus on osmolyte and salt additives in aqueous solutions. \n_ \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/ben-humphreys-institut-laue-langevin-ill-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:20260831T140000
DTEND;TZID=Europe/Paris:20260831T150000
DTSTAMP:20260709T120641Z
CREATED:20260709T120641Z
LAST-MODIFIED:20260709T120641Z
UID:10000217-1788184800-1788188400@sfp-alpes.fr
SUMMARY:Sasha CHERNYSHEV (University of California\, Irvine\, USA)
DESCRIPTION:BaCo₂(AsO₄)₂ : Strong Kitaev\, After All\nRésumé : \nBaCo₂(AsO₄)₂ – a magnetic compound first studied some 50 years ago—has long been a mystery. Its spectrum is incompatible with the theory that this material was supposed to verify\, and its magnetic order is discrepant and easily destroyed by an exceptionally low magnetic field. All these traits have perplexed theorists and experimentalists alike. The mystery had to wait for breakthroughs such as the development of the novel concept of « Kitaev magnetism » in the late 2000s. It had to wait even longer as the first\, more obvious Kitaev candidates were studied\, before researchers turned their attention to the cobaltate family. Only recently did the stars align to enable a comprehensive analysis of this enduring enigma. Our work [1] has provided exactly that: it propelled BaCo₂(AsO₄)₂ to the forefront of research as a champion among Kitaev magnets\, while bringing its multifaceted conundrums close to a complete resolution by reconciling its puzzling magnetic state\, spectrum\, and low critical field with the phenomenology of the proposed model. \n[1] P. A. Maksimov\, S. Jiang\, L. P. Regnault\, and A. L. Chernyshev\, Phys. Rev. Lett. 135\, 066703 (2025). (Editors’ Suggestion). \n_ \nArno Hiess (College 4 Secretary) \nExternal visitors may ask for a site access to tellier(at)ill.fr \nZoom link : https://ill.zoom.us/j/94822992547?pwd=STd44Z3otZU5k1DXbwobbeLtQPJJq2.1 – Password : SeminarC4
URL:https://sfp-alpes.fr/event/sasha-chernyshev-university-of-california-irvine-usa/
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:20260901T140000
DTEND;TZID=Europe/Paris:20260901T150000
DTSTAMP:20260827T151536Z
CREATED:20260827T151536Z
LAST-MODIFIED:20260827T151536Z
UID:10000223-1788271200-1788274800@sfp-alpes.fr
SUMMARY:Tomáš NOVOTNY (Charles University\, Praha\, Czech Republic)
DESCRIPTION:Theoretical approaches to correlated quantum dots coupled to superconducting leads\nRésumé : \nI will present a brief overview of relatively simple theoretical approaches developed in our Prague group in past several years and applied to the problem of description of correlated quantum dots attached to the BCS superconducting leads. As a thorough Quantum Monte Carlo analysis (1) of the experimental data (2) showed realistic experimental setups can be even quantitatively captured by the Single Impurity Anderson Model (SIAM) with superconducting leads. Pioneering semi-analytical approaches have not matched the so far employed heavy numerical tools such as Numerical Renormalization Group (NRG) and/or Quantum Monte Carlo (QMC) in the ability of quantitatively predicting the properties of this model. However\, we have shown that self-consistent perturbation expansion up to the second order in the interaction strength (3) yields at zero temperature and for a wide range of other parameters excellent results for the position of the 0 − π impurity quantum phase transition boundary and the Josephson current as well as the energy of Andreev bound states in the 0-phase. Furthermore\, we have discovered exact identities connecting symmetric and asymmetric coupling situations which significantly reduce computational requirements in experimentally generic asymmetric setups (4) and provided simple approximate analytical formulas for the fitting of the phase boundaries from finite-temperature experimental data (5). I will also briefly mention an exact mapping of a half-filled superconducting SIAM onto a normal SIAM with a structured semiconducting lead which simplifies some technical aspects of its NRG solution significantly (6) and a simple way of determination of the quantum critical point from finite-temperature QMC statistics (7). Finally\, the most recent extensions of those methods to more quantum dots (8) or superconducting leads (9) will be mentioned. \n(1) David J. Luitz\, Fakher F. Assaad\, Tomáš Novotný\, Christoph Karrasch\, and Volker Meden\, Understanding the Josephson current through a Kondo-correlated quantum dot\, Phys. Rev. Lett. 108\, 227001 (2012).\n(2) H. Ingerslev Jørgensen\, T. Novotný\, K. Grove-Rasmussen\, K. Flensberg\, and P. E. Lindelof\, Critical Current 0-π Transition in Designed Josephson Quantum Dot Junctions\, Nano Lett. 7 (8)\, 2441 (2007).\n(3) M. Žonda\, V. Pokorný\, V. Janiš\, and T. Novotný\, Perturbation theory of a superconducting 0-π impurity quantum phase transition\, Scientific Reports 5\, 8821(2015); Perturbation theory for an Anderson quantum dot asymmetrically attached to two superconducting leads\, Phys. Rev. B 93\, 024523 (2016).\n(4) Alžběta Kadlecová\, Martin Žonda\, and Tomáš Novotný\, Quantum dot attached to superconducting leads: Relation between symmetric and asymmetric coupling\, Phys. Rev. B 95\, 195114 (2017).\n(5) Alžběta Kadlecová\, Martin Žonda\, Vladislav Pokorný\, and Tomáš Novotný\, Practical Guide to Quantum Phase Transitions in Quantum-Dot-Based Tunable Josephson Junctions\, Phys. Rev. Applied 11\, 044094 (2019).\n(6) Peter Zalom\, Vladislav Pokorný\, and Tomáš Novotný\, Spectral and transport properties of a half-filled Anderson impurity coupled to phase-biased superconducting and metallic leads\, Phys. Rev. B 103\, 035419 (2021); Peter Zalom and Tomáš Novotný\, Tunable reentrant Kondo effect in quantum dots coupled to metal-superconducting hybrid reservoirs\, Phys. Rev. B 104\, 035437 (2021).\n(7) V. Pokorný and T. Novotný\, Footprints of impurity quantum phase transitions in quantum Monte Carlo statistics\, Phys. Rev. Research 3\, 023013 (2021).\n(8) M. Žonda\, P. Zalom\, T. Novotný\, G. Loukeris\, J. Bätge\, and V. Pokorný\, Generalized atomic limit of a double quantum dot coupled to superconducting leads\, Phys. Rev. B 107\, 115407 (2023).\n(9) Peter Zalom\, Martin Žonda\, and Tomáš Novotný\, Hidden Symmetry in Interacting-Quantum-Dot-Based Multiterminal Josephson junctions\, Phys. Rev. Lett. 132\, 126505 (2024). \n_ \nContact : equipe-seminaires-nano@listes.grenoble.cnrs.fr
URL:https://sfp-alpes.fr/event/tomas-novotny-charles-university-praha-czech-republic/
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:20260904T110000
DTEND;TZID=Europe/Paris:20260904T120000
DTSTAMP:20260828T125150Z
CREATED:20260828T125150Z
LAST-MODIFIED:20260828T125150Z
UID:10000232-1788519600-1788523200@sfp-alpes.fr
SUMMARY:Sara MATYAS​ (Ingénieur innovation)​ & Stéphanie CELIS-JUAREZ (CNRS\, Direction des Relations Territoriales\, DR11)
DESCRIPTION:La Valorisation : quels dispositifs d’accompagnement au CNRS ?\nRésumé : \nLors de ce séminaire\, les dispositifs d’accompagnement en valorisation proposés par le CNRS vous seront présentés. Une opportunité de mieux connaitre les guichets de financement mais aussi de reparler de la déclaration d’invention\, point de départ de toute démarche de valorisation. \nLes guichets Prématuration CNRS et PUI\, Programme PISE\, Programme RISE vous seront notamment présentés\, ainsi que des Programmes de financement 2027 ciblant des projets à impacts sociétaux et environnementaux. \nEnfin\, un temps d’échange avec les oratrices permettra de répondre aux questions relatives à vos projets. \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/sara-matyas-ingenieur-innovation-stephanie-celis-juarez-cnrs-direction-des-relations-territoriales-dr11/
LOCATION:IBS – Salle des séminaires\, IBS 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
ORGANIZER;CN="IBS":MAILTO:ibs.seminaires@ibs.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260907T000000
DTEND;TZID=Europe/Paris:20260911T235959
DTSTAMP:20260611T112251Z
CREATED:20260611T112251Z
LAST-MODIFIED:20260611T112251Z
UID:10000197-1788739200-1789171199@sfp-alpes.fr
SUMMARY:Recent Advances in Quantum Integrable Systems 2026 (RAQIS)
DESCRIPTION:The conference aims at bringing in contact people working on various aspects of Quantum Integrable Systems\, including applications to Statistical Physics\, Condensed Matter and Field Theories.\nThe registration to the conference can be done through the website https://indico.in2p3.fr/event/38960/ \n\nIt will be closed on July 31th\, 2026. \nNote also that the early fees period will end by the end of June 2026. \nFees include lunches\, conference banquet and coffea breaks.\n_\n\nContact : raqis@lapth.cnrs.fr
URL:https://sfp-alpes.fr/event/recent-advances-in-quantum-integrable-systems-2026-raqis/
LOCATION:LAPTh – Auditorium\, 9\, chemin de Bellevue\, Annecy\, 74940\, France
CATEGORIES:Conférence,Evènements
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260908T110000
DTEND;TZID=Europe/Paris:20260908T120000
DTSTAMP:20260903T153516Z
CREATED:20260903T153408Z
LAST-MODIFIED:20260903T153516Z
UID:10000238-1788865200-1788868800@sfp-alpes.fr
SUMMARY:Delphine DELACOUR (IBDM \, Marseille (France))
DESCRIPTION:Deciphering the principles of epithelial tissue organization\nRésumé : \nEpithelia constitute the primary physical barrier against external insults while simultaneously ensuring organ function. Defects in epithelial assembly or function lead to a broad spectrum of pathological conditions\, ranging from rare developmental disorders to cancer. Despite their fundamental importance\, the mechanisms by which epithelial cells coordinate individual behaviors across entire tissues to ensure spatial organization\, integrity\, and function remain poorly understood. To date\, epithelial coherence has been studied predominantly in invertebrate systems or in transformed cell lines\, limiting our understanding of its regulation in physiological mammalian contexts.\nThe intestinal epithelium represents an exceptional model to address these questions. It is one of the most rapidly renewing tissues in mammals and is continuously exposed to challenges. Its homeostasis relies on the precise balance between cell proliferation\, differentiation\, migration\, and death. However\, the cellular and developmental principles governing intestinal tissue organization and maintenance remain largely unexplored. \nThe overarching objective of this project is to elucidate how functional domains of the intestinal epithelium are established\, maintained\, and coordinated in space and time. Specifically\, the project aims to : \n1. understand the mechanisms that preserve the integrity of the proliferative compartment and determine their role in crypt formation and maintenance ;\n2. uncover epithelial connectivity and collective behavior within the differentiated compartment\, both under homeostatic conditions and in response to perturbations. \nA major strength of this project lies in its integrative and comparative strategy\, combining in vivo and in vitro murine models with human disease-relevant systems. The project brings together advanced approaches in cell and developmental biology\, tissue engineering\, histology\, molecular biology\, biophysics\, and computational modeling. This multidisciplinary framework will enable the identification of adaptive mechanisms by which epithelial cells polarize\, self-organize\, and dynamically regulate their fate in response to their environment\, with broad implications for developmental biology\, regenerative medicine\, and disease pathology. \n_ \nContact : monika.dolega@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/delphine-delacour-ibdm-marseille-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:20260908T140000
DTEND;TZID=Europe/Paris:20260908T150000
DTSTAMP:20260827T152108Z
CREATED:20260827T152108Z
LAST-MODIFIED:20260827T152108Z
UID:10000224-1788876000-1788879600@sfp-alpes.fr
SUMMARY:Paul CANFIELD (Ames Laboratory\, Iowa State University\, Ames\, Iowa 50010\, USA)
DESCRIPTION:Negotiations with Nature — What happens when a Physicist tries to be a Chemist\nRésumé : \nOver the past 30 plus years my group has made over 10\,000 solution growth attempts to grow or explore 1\,000’s of different compounds or phase spaces. Over the past decade we have been developing a variety of different algorithms for identifying and accessing poorly explored spaces\, partly with an eye toward discovering new phases\, partly with an eye toward discovering new electrical or magnetic phase transitions and ground states. In this talk I will try to address the basic research questions of\, “where should I look for new materials or physics?” and “how can I enhance my chances of discovering X\, Y\, or Z (where XYZ can be your favorite state\, structure or behavior)?”. Specific examples spanning superconductors\, quasicrystals\, heavy fermions\, fragile magnets\, topological electronic systems\, local moment magnets and a few lost puppies will be given and reviewed. \n_ \nContact : jean-pascal.brison@cea.fr
URL:https://sfp-alpes.fr/event/paul-canfield-ames-laboratory-iowa-state-university-ames-iowa-50010-usa/
LOCATION:GreenER – Amphi Bergès\, GreenER\, 21 avenue des Martyrs\, Grenoble\, 38031\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260910T143000
DTEND;TZID=Europe/Paris:20260910T153000
DTSTAMP:20260904T141514Z
CREATED:20260904T141514Z
LAST-MODIFIED:20260904T141514Z
UID:10000240-1789050600-1789054200@sfp-alpes.fr
SUMMARY:Kayla NGUYEN (Oregon University)
DESCRIPTION:Three-Dimensional Atomic Reconstruction using Electron Ptychography\nRésumé : \nElectrons play a pivotal role in stabilizing matter\, but they are also tools that can reveal the underlying physics of complex systems from high energy physics to condensed matter. Electrons can be used as imaging probes\, where properties of matter such as magnetism or topology can be observed atom-by-atom.  In this talk\, I will show how electron ptychography\, a computational phase retrieval technique\, can improve resolution beyond the numerical aperture of electromagnetic lenses and reveal atomic structures in three-dimensions.  In particular\, I use this ‘computation lens’ approach on Er: CeO2 nanocrystals and thin films with dramatically different crystallographic orientations to uncover dopants\, defects and strain with picometer precision.  Ptychography can also be extended to visualize topological magnetism in three dimensions.  Here\, I will devise an approach to image magnetic structures of centrosymmetric skyrmions grown from amorphous FeGePt; here\, internal Bloch domains with Néel caps can be reconstructed\, as predicted from micromagnetic simulations. For non-idealized emergent materials\, solving the atomic or magnetic structure in three dimensions can support results from density functional theory\, micromagnetic simulations and enable a deeper understanding of a system’s physical properties. \n_ \nContact : martien.den-hertog@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/kayla-nguyen-oregon-university/
LOCATION:CNRS – Salle Erwin Bertaut (F418)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260911T110000
DTEND;TZID=Europe/Paris:20260911T120000
DTSTAMP:20260903T154443Z
CREATED:20260903T154413Z
LAST-MODIFIED:20260903T154443Z
UID:10000239-1789124400-1789128000@sfp-alpes.fr
SUMMARY:William FAUGNO (LKB)
DESCRIPTION:Topology in the Many-Body Spectrum: A Spectral Localizer Approach to Quantum Scars\nRésumé : \nTopological phases\, both single-particle and many-body\, are often formulated through momentum-space invariants\, many of which rely on the presence of a spectral gap. However\, disorder and gapless spectra can make these conventional approaches difficult to apply. The spectral localizer provides an alternative real-space framework for defining and characterizing topology in such settings. By combining the Hamiltonian with position operators\, it constructs a pseudospectrum that can identify topologically protected states while simultaneously providing a measure of their spectral stability. The spectral localizer has been successfully applied to a variety of single-particle systems\, including disordered and gapless systems. In this seminar\, I will present recent work extending the spectral localizer to many-body systems. Our construction provides a general pseudospectral framework for identifying topologically protected states throughout the many-body spectrum. We have used this framework to identify candidates for quantum many-body scarring in both an interacting chiral bosonic chain and the PXP model\, demonstrating that the approach is not tied to a particular microscopic mechanism for scarring. The many-body spectral localizer thus provides new insight into the structure and stability of these anomalous ETH-violating states\, while offering a quantitative measure of their stability. Finally\, I will discuss the implications of this framework for quantum error-correcting codes constructed from quantum many-body scar subspaces. \nContact : jeanne.colbois@neel.cnrs.fr \nLe séminaire théorie est financé par la fédération de recherche Quantalps.
URL:https://sfp-alpes.fr/event/william-faugno-lkb/
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:20260911T110000
DTEND;TZID=Europe/Paris:20260911T120000
DTSTAMP:20260827T154120Z
CREATED:20260827T154120Z
LAST-MODIFIED:20260827T154120Z
UID:10000226-1789124400-1789128000@sfp-alpes.fr
SUMMARY:Alexander BRONSTEIN (Institute of Science & Technology\, Autriche)
DESCRIPTION:Experiment-guided generative models for protein structure and dynamics\nRésumé : \n\nProteins exist as a dynamic ensemble of multiple conformations\, and these motions are often crucial for their functions. However\, current structure prediction methods predominantly yield a single conformation\, overlooking the conformational heterogeneity revealed by diverse experimental modalities. I will present a framework for building experiment-grounded protein structure generative models that infer conformational ensembles consistent with measured experimental data. The key idea is to treat state-of-the-art protein structure predictors (e.g.\, AlphaFold3) as sequence-conditioned structural priors\, and cast ensemble modeling as posterior inference of protein structures given experimental measurements. Through extensive real-data experiments\, I will demonstrate the generality of our method to incorporate a variety of experimental measurements. In particular\, our framework uncovers previously unmodeled conformational heterogeneity from crystallographic densities\, and generates high-accuracy NMR ensembles orders of magnitude faster than the state-of-the-art and often better fitting the experimental data than the publicly deposited structures to the Protein Data Bank. I believe that this approach will unlock building predictive models that fully embrace experimentally observed conformational diversity.​\n_\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/alexander-bronstein-institute-of-science-technology-autriche/
LOCATION:IBS – Salle des séminaires\, IBS 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
ORGANIZER;CN="IBS":MAILTO:ibs.seminaires@ibs.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260911T123000
DTEND;TZID=Europe/Paris:20260911T131500
DTSTAMP:20260827T150826Z
CREATED:20260827T150807Z
LAST-MODIFIED:20260827T150826Z
UID:10000222-1789129800-1789132500@sfp-alpes.fr
SUMMARY:Sandra LAVOREL (Laboratoire d’Écologie Alpine\, Grenoble)
DESCRIPTION:S’allier avec la nature pour l’adaptation au changement climatique\nRésumé : \nLes écosystèmes en bon état et leur biodiversité contribuent de multiples façons à la qualité de notre vie. Outre leur rôle dans la séquestration du carbone\, ils soutiennent l’adaptation au changement climatique par leur résilience\, la régulation des risques naturels ou le soutien du tissu économique et culturel. Les solutions fondées sur la nature mobilisent ces capacités par la conservation\, la gestion durable et la restauration de la biodiversité. Dans cette présentation vous verrez comment elles peuvent être mises en œuvre dans nos territoires\, en concertation avec leurs acteurs. \nÀ propos de l’intervenant : \nSandra Lavorel est directrice de recherche au CNRS. Elle est une figure majeure de l’écologie scientifique. Elle travaille au Laboratoire d’Écologie Alpine à Grenoble. Pionnière de l’écologie fonctionnelle des plantes\, ses recherches portent sur les effets du changement climatique et des usages des sols sur la biodiversité\, et le fonctionnement des écosystèmes. Elle applique ces approches à la quantification des services écosystémiques et à l’adaptation au changement climatique. Avec ses travaux interdisciplinaires et transdisciplinaires\, elle figure parmi les leaders mondiaux de l’analyse des trajectoires d’adaptation fondée sur la nature. Très impliquée dans le dialogue science-politique\, elle a contribué aux évaluations internationales (IPBES\, GIEC) et nationales (Evaluation Française des Ecosystème et des Services Ecosystémiques). \n_ \nContact : contact@giant-grenoble.org \n 
URL:https://sfp-alpes.fr/event/sandra-lavorel-laboratoire-decologie-alpine-grenoble/
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:20260914T110000
DTEND;TZID=Europe/Paris:20260914T120000
DTSTAMP:20260910T140135Z
CREATED:20260910T140135Z
LAST-MODIFIED:20260910T140135Z
UID:10000241-1789383600-1789387200@sfp-alpes.fr
SUMMARY:Daniel DUFFY (Cambridge\, UK)
DESCRIPTION:Mechanics and geometry of nematic shape-morphing sheets\n\nRésumé : \nThin ‘shape-programmed’ sheets morph into curved shapes when stimulated by heat\, light\, or chemical fuel. Biology is full of intricate examples (leaves\, petals\, etc)\, and soft synthetic materials such as liquid-crystal elastomers have begun to approach similar levels of richness\, opening doors to bio-inspired soft machines. Such machines can lift\, pump\, push\, pull\, . . . etc\, promising myriad applications including microfluidic components\, deployable structures\, switchable surfaces\, and robotic actuators. I’ll present work on nematic shape morphers\, in which the direction of anisotropic deformation is patterned\, while deformation magnitudes are spatially uniform. The focus will be on encoding Gauss curvature\, which imparts mechanical strength to the resultant structures\, as Gauss understood centuries ago. The patterned deformation direction must typically be chosen at the time of manufacture\, leading to a design limitation: the morphing sheet can only realise a single target shape. I will then show how to overcome this limitation\, by varying the deformation magnitude (e.g. via patterned illumination) in both space and time. This new paradigm allows a single physical sample to be morphed into arbitrarily many different shapes at will. Thus a designer can specify entire time-dependent motions of the sheet. This capability could greatly increase the versatility of soft robots\, e.g. when operating in confined environments or performing complex tasks. Furthermore\, it facilitates swimming\, which typically requires non-reciprocal motion. More generally\, it unlocks the full potential of shape-morphing sheets\, allowing them to progress from being merely functional to being truly multi-functional. \n_ \nContact : emmanuel.siefert@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/daniel-duffy-cambridge-uk/
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:20260914T140000
DTEND;TZID=Europe/Paris:20260914T150000
DTSTAMP:20260910T141150Z
CREATED:20260910T141150Z
LAST-MODIFIED:20260910T141150Z
UID:10000242-1789394400-1789398000@sfp-alpes.fr
SUMMARY:Alberto CARTA ( Laboratory for Material simulations\, Paul Scherrer Institut\, Villigen)
DESCRIPTION:Of bandits and Bohr magnetons : balancing exploration and exploitation in magnetic landscapes\nRésumé : \nThe energy landscape of strongly interacting magnetic materials is a high-dimensional\, rugged terrain populated by a multitude of metastable states with distinct magnetizations\, oxidation states\, and orbital orders. Identifying the true ground state within this complexity remains a significant hurdle for the computational design of materials with tunable magnetic properties.\nBuilding on the work of Ponet et al. [1\,2]\, we systematically characterize this terrain to reveal the fundamental drivers of its complexity. We trace its origins to a core competition between the DFT functional’s preference for delocalization and the Hubbard +U correction’s drive for localization. This primary conflict is further modulated by a hierarchy of magnetic interactions\, including Hund’s coupling\, superexchange\, and Kugel-Khomskii physics\, which collectively define the energetic valleys and barriers across both high and low energy scales.\nTo overcome these barriers\, we propose a novel approach inspired by a completely different field: advertisement/recommendation engines (contextual Bandits) currently powering social media feeds and large parts of the Internet. By leveraging bandit strategies that balance the exploration of unknown configurations with the exploitation of known areas\, we demonstrate an efficient method for navigating this landscape. Our results show that these strategies successfully identify the lowest energy states where traditional methods often fail\, providing a robust framework for predicting and engineering the properties of strongly correlated magnetic materials. \n[1] Ponet\, L.\, Di Lucente\, E.\, & Marzari\, N. (2024). The energy landscape of magnetic materials. npj Computational Materials\, 10(1)\, 151.\n[2] Haddadi\, F.\, Campi\, D.\, dos Santos\, F.\, Mounet\, N.\, Ponet\, L.\, Marzari\, N.\, & Gibertini\, M. (2025). Exploring the magnetic landscape of easily-exfoliable two-dimensional materials (arXiv:2509.09531v2). \n_ \nContact : matteo.dastuto@neel.cnrs.fr
URL:https://sfp-alpes.fr/event/alberto-carta-laboratory-for-material-simulations-paul-scherrer-institut-villigen/
LOCATION:CNRS – Salle Louis Weil (E424)\, CNRS - Institut Néel 25 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260914T140000
DTEND;TZID=Europe/Paris:20260914T150000
DTSTAMP:20260903T152520Z
CREATED:20260903T152520Z
LAST-MODIFIED:20260903T152520Z
UID:10000237-1789394400-1789398000@sfp-alpes.fr
SUMMARY:Gabriel GARCIA JIMENEZ  (Institut Laue-Langevin)
DESCRIPTION:Proton-induced reactions on 238U in inverse kinematics : probing fission through nucleon knockout\nRésumé : \nIn this seminar\, I will present a study of proton-induced reactions on 238U in inverse kinematics\, performed at 540 AMeV with the R3B/SOFIA setup at GSI. The experiment provides access to the different reaction channels and\, in particular\, to the fission of the protactinium residue following nucleon knockout. \nI will discuss how the excitation energy of the residual nucleus was reconstructed from the kinematics of the emitted nucleons and how it can be correlated with the charge distribution of the fission fragments. This provides a way to investigate the evolution of shell effects with excitation energy and to test different theoretical descriptions of this process. The experimental results will be compared with calculations based on the INCL and ABLA07 models. \nFinally\, I will show the measured cross sections for the main spallation-evaporation and spallation-fission channels and compare them with previous experimental data and theoretical predictions. Overall\, the results provide insight into the interplay between nucleon knockout\, nuclear excitation\, and fission in relativistic proton-induced reactions on heavy nuclei. \nHenry Fischer (College 3 Secretary) \nExternal visitors may ask for a site access to : dubouloz@ill.fr \nZoom link : https://ill.zoom.us/j/7804743065?pwd=vYbib10VNk56W5mHOHB2QhzTBEyT0J.1&omn=95143035964 – Password : SeminarC3 \n 
URL:https://sfp-alpes.fr/event/gabriel-garcia-jimenez-institut-laue-langevin/
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:20260915T110000
DTEND;TZID=Europe/Paris:20260915T120000
DTSTAMP:20260910T142118Z
CREATED:20260910T142118Z
LAST-MODIFIED:20260910T142118Z
UID:10000243-1789470000-1789473600@sfp-alpes.fr
SUMMARY:Thomas KISBY (Centre for Nanotechnology in Medicine\, Manchester (UK)
DESCRIPTION:Nanoscale approaches to brain tumour therapy : harnessing biology for targeted therapeutics\nRésumé : \nGlioblastoma remains one of the most challenging cancers to treat\, in part because conventional approaches struggle to selectively access and target the cells responsible for recurrence. This talk will explore how nanoscale technologies can exploit the biology of brain tumours and the brain to create new therapeutic opportunities. Using graphene oxide\, a nanomaterial with preferential interaction with tumour-associated immune cells\, I will describe how we can use this as a locally administered platform for both more localised chemotherapy and targeted tumour immunomodulation. \nI will then discuss a new approach that exploits the biological response to tumour resection itself : a transient postoperative window in which the blood–brain barrier becomes selectively\npermeable to clinically used liposomal nanomedicines. By linking the timing and biology of surgery with nanoscale drug delivery\, we have developed an approach to specifically target residual disease at the site of recurrence. Together\, these studies illustrate how understanding and exploiting biological processes can guide the design and application of nanotherapeutics for brain cancer. \n_ \nContact : anne-laure.bulin@univ-grenoble-aleps.fr
URL:https://sfp-alpes.fr/event/thomas-kisby-centre-for-nanotechnology-in-medicine-manchester-uk/
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
END:VCALENDAR