Fédération Friedel-Jacquinot

Blog

  • January 16-20, 2023

    Seminar ISMO:
    17th January, 2023, 02:00pm, Amphithéâtre, Bât. 520+ Zoom (unusual time !)
    Oliver S. Wenger, University of Basel, Suisse
    “Photoredox mechanisms and photocatalyst development”
    Link / Contact
    Seminar LPS:
    – Quantum matter:
    16th January, 2023, 02:00pm, Moyen amphi, Bât. 510 et visio
    Benjamin Piot, LNCMI Grenoble
    « Spin resonances in 2 dimensions »
    Link / Contact
    – Soft matter:
    20th January, 2023, 11:00am, Moyen amphi, Bât. 510
    Alfredo Sciortino, CEA Grenoble
    “From nematic defects to polar order: polar flow of gliding filaments steered by nematic defects”
    Link /  Contact
    Seminar LPTMS:
    17th January, 2023, 03:00pm, Petit amphi, Bât. 530+ Zoom (unusual time !)
    Etienne Granet, Chicago University
    “Out-of-equilibrium dynamics in Gaussian systems: from quantum quenches to measurement-induced phase transitions”
    Link
     

  • January 9-13, 2023

    Seminar Mechanics FAST/LISN:
    12th January, 2023, 02:00pm, salle C.120, Bât. 530
    Thomas Gibaud, Laboratoire de Physique CNRS ENS Lyon
    “Carbon black gels: yielding, softening under high power ultrasound, and flow properties”
    Link 

    Seminar ISMO:
    10th January, 2023, 11:00am, Amphithéâtre, Bât. 520+ Zoom
    Alexandra Fragola, ISMO
    “Structured illumination and adaptive optics fluorescence microscopy for high resolution bio-imaging”
    Link / Contact 

    Seminar LPS:
    – Soft matter:
    13th January, 2023, 11:00am, Moyen amphi, Bât. 510
    Mohamed Nawfal Ghazzal, Institut de Chimie Physique Orsay
    “Structured TiO2 material for enhanced light harvesting and photocatalytic activity”
    Link / Contact 

    Seminar LPTMS:
    10th January, 2023, 11:00am, Salle des séminaires, Bât. 530+ Zoom
    Andrei Rotaru, LPTHE
    “New results for Rényi entanglement entropies in one-dimensional quantum
    critical systems with boundaries”
    Link

  • January 2-6, 2023

    Seminar Mechanics FAST/LISN:
    5th January, 2023, 02:00pm, salle C.120, Bât. 530
    Mathilde Reyssat, Laboratoire Gulliver, ESPCI
    “Active droplets confined in a tube: an active Bretherton problem!”
    Link  

    Seminar LPS:
    – Quantum matter:
    3rd January, 2023, 02:00pm, Moyen amphi, Bât. 510 et visio
    Alexis Morvan, Google
    “Formation of robust bound states of interacting photons”
    Link  / Contact 

  • Organisation

    • La direction

    La nomination du directeur de la fédération est prononcée par la tutelle de la fédération, l’Université Paris- Saclay, en accord avec l’ensemble des tutelles des laboratoires. Cette nomination se fait par consensus entre les directions des 6 laboratoires composant la fédération. Elle devra être avalisée par les conseils de laboratoire des 6 laboratoires. Le directeur de la fédération est choisi parmi les chercheurs et enseignants-chercheurs des 6 laboratoires. La direction de la fédération tourne tous les 2 ans entre les 6 laboratoires. Le directeur met en œuvre la politique de la fédération et assure la gestion et l’utilisation du budget. Sa mission implique aussi la responsabilité de l’organisation de l’animation scientifique, de la formation, de l’accès à l’information. Il suscitera des rencontres avec les directeurs de laboratoire aussi souvent que cela est nécessaire pour le bon fonctionnement de la fédération.

    Directeur de la fédération : Raoul Santachiara

    • Conseil de fédération

    Ce conseil est composé du directeur de la fédération, des 6 directeurs de laboratoire, de 6 représentants chercheurs ou enseignants-chercheurs (1 par laboratoire) et de 6 représentants des ingénieurs et techniciens (1 par laboratoire). La façon dont le choix de ces représentants est effectué sera laissée à la discrétion de chaque laboratoire. Le conseil est consulté sur l’animation scientifique de la fédération, la communication et la promotion des recherches collaboratives entre les laboratoires, les moyens budgétaires à demander par la fédération et leur utilisation. Les membres de ce conseil pourront eux-mêmes coordonner des actions ou donner mission à des collègues pour mettre en place les actions (par exemple les actions de communication, d’organisation de la journée de la fédération, des colloques de la fédération.

    Les membres du Conseil sont :
    Raoul Santachiara, directeur de la FFJ
    Harold Auradou, directeur du FAST
    Thomas Pino, directeur de l’ISMO
    Olivier Dulieu, directeur du LAC
    Pascale Foury, directrice du LPS
    Alberto Rosso, directeur du LPTMS
    Fabrien Bretenaker, directeur du LuMIn
    Georg Dietze (FAST)
    Lionel Auffray (FAST)
    Thibaut Chasse (FAST)
    Eric Le Moal (ISMO)
    Thierry Chamaillé (ISMO)
    Corentin Rossi (ISMO)
    Nouari Kebaïli (LAC)
    Daniel Civiale (LAC)
    Martin Collignon (LAC)
    Pascale Launois (LPS)
    Jean-Denis Blazit (LPS)
    Thomas Bugea (LPS)
    Raoul Santachiara (LPTMS)
    Delphine Hannoy (LPTMS)
    Giovanni Russo (LPTMS)
    Isabelle Ledoux (LuMIn)
    Sébastien Rousselot (LuMIn)

  • December 12-16, 2022

    Seminar Mechanics FAST/LISN:
    15th December, 2022, 02:00pm, salle des séminaires, Bât. 530
    Philippe Brunet, Laboratoire MSC
    “Streaming acoustique près de pointes”
    Link
    Seminar ISMO:
    13th December, 2022, 11:00am, Amphi de l’ISMO, Bât. 520 et visio
    Philippe Carbonnière, IPREM, Pau
    “GSAM : A global search algorithm to find the low-lying conformers of atomic and molecular clusters for the evaluation of their (vibrational) properties”
    Link /  Contact
    Seminar LPS:
    – Quantum matter:
    12th December, 2022, 02:00pm, Salle S-208, Bât. 510 et visio
    Miguel Monteverde, LPS
    “Doped twisted stacking faults in graphite systems and hints of superconductivity”

    13th December, 2022, 11:00am, Salle S-208, Bât. 510 et visio
    Sachin Krishnia, Thales
    « Giant interfacial Rashba interaction for efficient charge to spin current generation in atomically thin metallic multilayers »
    Link  / Contact  
    – Soft matter:
    16th December, 2022, 11:00am, Moyen amphi, Bât. 5101
    Dorleta Jiménez de Aberasturi, BRTA, Espagne
    “Hybrid biofunctional materials for 3D cell model fabrication”
    Link  / Contact 
    PhD defense LPS:
    13th December, 2022, 02:00pm, Amphi ISMO, Bât. 520
    Arianna D’Angelo
    « Imogolite nanotubes: order-disorder transition and dynamics of nanoconfined water »

    16th December, 2022, 10:00am, Amphi Blandin, Bât. 510
    Léo Berges
    « Magnetic Skyrmions in GdCo ferrimagnetic thin-films »

    16th December, 2022, 01:00pm, Moyen Amphi, Bât. 510
    Rodolfo Rocco
    « Neuromoprhic properties of Mott materials under an electric field »

    Seminar LPTMS:
    13th December, 2022, 11:00am, Salle des séminaires, Bât. 530+ Zoom
    Martin Robert-de-Saint-Vincent, Laboratoire de Physique des Lasers
    “Manipulating the spins of degenerate SU(10)-symmetric fermi gases”
    Link

    PhD defense LuMIn:
    15th December, 2022, 02:00pm, Amphi 1Z18 ENS
    Antoine Hilberer
    “Quantum sensors for high pressure superconductivity”

     

     

  • December 5-9, 2022

    Seminar Mechanics FAST/LISN:
    7th December, 2022, 11:00am, salle de conferences, Bât. 507 (unusual day)
    Rodrigo Mendez Rojano, Cornell University
    “Mathematical Modeling of Thrombosis in Medical Devices: the interplay between fluid mechanics, biochemistry, and data driven methods”

    8th December, 2022, 02:00pm, salle des séminaires, Bât. 530
    Anaïs Abramian, Institut Jean de Rond d’Alembert
    “Vibrated granular matter / Cohesive granular matter”

    9th December, 2022, 11:00am, salle des séminaires, Bât. 530 (unusual day)
    Virgile Thiévenaz, INRAE, Clermont-Ferrand
    “Pinch-off of complex suspensions drops”
    Link  

    PhD defense ISMO:
    5th December, 2022, 02:00pm, Auditorium D. Descartes, UVSQ Versailles et visio
    Mai Vuong
    “Degradation mechanisms of nanoparticle-based drug delivery systems : the case of polymer conjugate and metal-organic framework”

    Seminar ISMO:
    6th December, 2022, 02:00pm, Amphi de l’ISMO, Bât. 520 et visio
    Pedro Henrique Rezende Gonçalves, ISMO
    “ARPES investigations of the topological states in TaTe4 and NbTe4”
    Link  / Contact

    Seminar LPS:
    – Quantum matter:
    5th December, 2022, 02:00pm, Moyen amphi, Bât. 510 et visio
    Juan Carlos Cuevas, University of Madrid
    “Interplay between superconductivity and magnetism at the atomic scale: Yu-Shiba-Rusinov bound states”

    8th December, 2022, 04:00pm, Moyen amphi, Bât. 510 et visio
    chönenberger, Université de Bâle
    “Search for the Fractional Josephson Effect in Topological and Nontopological Materials”
    Link  / Contact

    PhD defense LPS:
    6th December, 2022, 02:00pm, Moyen Amphi, Bât. 510
    Ansgar Graf
    “Aspects des systèmes multibandes: Géometrie quantique, bandes plates et fermions multiples”

    8th December, 2022, 09:30am, Amphi Blandin, Bât. 510
    Alexandre Bernard
    “Signatures de topologie d’ordre supérieur dans des nanostructures de bismuth par mesures de transport« 

    8th December, 2022, 02:00pm, Amphi Blandin, Bât. 510
    Marie Corpart
    “Evaporation de gouttes sur des fibres”

    Seminar LPTMS:
    6th December, 2022, 11:00am, Salle des séminaires, Bât. 530+ Zoom
    Elisabeth Agoritsas, EPFL
    “Towards a unifying (mean-field) picture of driven disordered systems”
    Link 

    Seminar LuMIn:
    8th December, 2022, 11:00am, Amphi sc.071, Bât. Bouygues de CentraleSupélec
    Mohamed Chaker, INRS Québec, Canada
    “Pulsed Laser Deposition: a flexible tool for the synthesis of advanced functional materials 
    Contact

  • November 28 – December 2, 2022

    Seminar Mechanics FAST/LISN:
    1st December, 2022, 02:00pm, webinar
    Christos Markides, Imperial College London
    “Spatiotemporally-resolved measurements in multiphase flows with phase change”
    Link

    Seminar ISMO:
    29th November, 2022, 11:00am, Amphi de l’ISMO, Bât. 520 et visio
    Silvia Spezzano, Max Planck Institute
    “Dissecting the chemical and physical structure of pre-stellar cores”
    Link  / Contact

    PhD defense LPS:
    30th November, 2022, 02:30pm, Amphi Blandin, Bât. 510
    Etienne Fayen
    “Quasicrystal self-assembly in 2D hard sphere mixtures”

    Seminar LPTMS:
    29th November, 2022, 11:00am, Salle des séminaires, Bât. 530+ Zoom
    Alexis Poncet, ENS Lyon
    “Collective effects in driven matter: from one-dimensional crowding to 2D melting”
    Link

    PhD defense LuMIn:
    2nd December, 2022, 02:00pm, auditorium de Thales Research & Technology
    Maxime Descampeaux
    « Développement de cavités fibrées et contrôle de la modulation d’amplitude résiduelle (RAM) : application au gyromètre optique résonant »
    Contact

     

  • Comparative analysis of recirculating and collimating cesium ovens

    Abstract : We have performed a study of several cesium oven designs. A comparison between recirculating (or sticking-wall) and collimating (or re-emitting-wall) ovens is made in order to extract the most efficient design in terms of beam brightness. Unfortunately, non-reproducible behaviors have been observed, and the most often observed output flux is similar to the sticking-wall case, which is the lowest theoretical value of the two cases, with a beam brightness close to 10 18 at. sr −1 s −1 cm −2 . The reason of this universally observed behavior is unclear despite having tested several materials for the collimating tube. Conclusion on possible improved design based on sticking of cesium on several (un)cleaned surfaces is given.

    Raphaël Hahn Thomas Battard Oscar Boucher Yan Picard 1 Hans Lignier 1 Daniel Comparat 1 Nolwenn-Amandine Keriel Colin Lopez 2 Emanuel Oswald Morgan Reveillard 3 Matthieu Viteau 3
    1 LAC – Laboratoire Aimé Cotton
    2 LuMIn – Laboratoire Lumière, Matière et Interfaces
    3 Orsay Physics

  • Substrate influence on transition metal dichalcogenide monolayer exciton absorption linewidth broadening

    Abstract : The excitonic states of transition metal dichacolgenide (TMD) monolayers are heavily influenced by their external dielectric environment based on the substrate used. In this work, various wide bandgap dielectric materials, namely hexagonal boron nitride (h-BN) and amorphous silicon nitride (Si 3 N 4), under different configurations as support or encapsulation material for WS 2 monolayers are investigated to disentangle the factors contributing to inhomogeneous broadening of exciton absorption lines in TMDs using electron energy loss spectroscopy (EELS) in a scanning transmission electron microscope (STEM). In addition, monolayer roughness in each configuration was determined from tilt series of electron diffraction patterns by assessing the broadening of diffraction spots by comparison with simulations. From our experiments, the main factors that play a role in linewidth broadening can be classified in increasing order of importance by: monolayer roughness, surface cleanliness, and substrate-induced charge trapping. Furthermore, because high-energy electrons are used as a probe, electron beam-induced damage on bare TMD monolayer is also revealed to be responsible for irreversible linewidth increases. h-BN not only provides clean surfaces of TMD monolayer, and minimal charge disorder, but can also protect the TMD from irradiation damage. This work provides a better understanding of the mechanisms by which h-BN remains, to date, the most compatible material for 2D material encapsulation, facilitating the realization of intrinsic material properties to their full potential.

    Fuhui Shao 1, 2 Steffi Woo 1, 2 Nianjheng Wu 1, 2 Robert Schneider 3 Andrew Mayne 2 Steffen Michaelis de Vasconcellos 3 Ashish Arora 3 Benjamin Carey 3 Johann Preuß 3 Noémie Bonnet 1 Mauro Och 4 Cecilia Mattevi 4 Kenji Watanabe 5, 6 Takashi Taniguchi 5, 6 Zhichuan Niu 7 Rudolf Bratschitsch 3 Luiz Tizei 1, 2
    1 LPS – Laboratoire de Physique des Solides
    2 ISMO – Institut des Sciences Moléculaires d’Orsay
    3 WWU – Westfälische Wilhelms-Universität Münster = University of Münster
    4 Imperial College London
    5 Université de Tsukuba = University of Tsukuba
    6 NIMS – National Institute for Materials Science
    7 State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences

  • Density-tuned isotherms and dynamic change at the superconducting transition in a gate-controlled AlOx/SrTiO3 heterostructure

    Abstract : Two-dimensional electron gases in SrTiO3-based heterostructures provide a platform to study the real-time evolution of the macroscopic state with a variation of the carrier density, and the impact of structural properties on the emergence of the superconducting state. We have explored the isothermal evolution of the electron gas in AlOx/SrTiO3 by measuring the variation of resistance with continuous gate-voltage-controlled tuning of its carrier density. It is seen that condensation of the ordered phase leads to non-monotonic isotherms within the superconducting dome. The timescale for dynamic change following changes in gate voltage is measured across the phase transition. It is found to be tens of seconds near the onset of superconductivity, significantly larger compared to the normal state. Such a large timescale governing the kinetics of the phase transition presumably arises from the strong impact of structural defects and distortions of the substrate on the development of superconducting islands.

    Shamashis Sengupta 1 Miguel Monteverde 2 Anil Murani 2 Claire Marrache-Kikuchi 1 Andrés F Santander-Syro 3 Franck Fortuna 3
    1 IJCLab – Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
    2 LPS – Laboratoire de Physique des Solides
    3 ISMO – Institut des Sciences Moléculaires d’Orsay