Seminars

Gulliver seminars take place on Mondays at 11:30 AM in the F304 room, and typically last one hour including questions. The seminars are in English, and the scientific topics are mainly those studied in the laboratory.

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Seminars  (25)

• Gulliver Seminar : Suzanne Fielding (Durham University)
  Lundi 13 novembre 2023 de 11h30 à 12h30 - Bibliothèque PCT - F3.04
  Delayed yielding of amorphous materials
  Amorphous solids include soft materials such as emulsions, foams, colloids, granular matter, and gels, as well as harder metallic and molecular glasses. In contrast to conventional crystalline solids, the internal arrangement of their constituent microstructures (emulsion droplets, foam bubbles, etc.) lacks any (...)
• Séminaire GULLIVER
  Lundi 27 novembre 2023 de 11h30 à 12h30 - Charpak
  Phase-Separated Droplets Swim to Their Dissolution
  Cells control vital bio-chemical processes by creating compartments with distinct compositions. In addition to the well-known membrane-bound organelles, such as the nucleus or chloroplasts, dynamic membraneless compartments formed through liquid-liquid phase separation have merged as important cellular (...)
• Gulliver Seminar : Etienne Jambon-Puillet (LadHyX, Polytechnique)
  Lundi 27 novembre 2023 de 11h30 à 12h30 - Bibliothèque PCT - F3.04
  Phase-Separated Droplets Swim to Their Dissolution
  Cells control vital bio-chemical processes by creating compartments with distinct compositions. In addition to the well-known membrane-bound organelles, such as the nucleus or chloroplasts, dynamic membraneless compartments formed through liquid-liquid phase separation have emerged as important cellular (...)
• Gulliver Seminar : Peter Olmsted (Georgetown University)
  Lundi 4 décembre 2023 de 11h30 à 12h30 - Charpak
  How does the glass transition temperature in polymers depend on molecular weight ?
  I present a study of the molecular weight dependence, M, of the glass transition Tg(M), xperimentally and with simple modeling. We find three regimes for T_g(M), roughly corresponding to (1) short inflexible oligomers, (2) oligomers with 2-20 or so Kuhn steps, and (3) polymeric molecules. We identify (...)
• Gulliver Seminar : Peter Olmsted (Georgetown University)
  Lundi 4 décembre 2023 de 11h30 à 12h30 - Charpak
  How does the glass transition temperature in polymers depend on molecular weight ?
  I present a study of the molecular weight dependence, M, of the glass transition Tg(M), xperimentally and with simple modeling. We find three regimes for T_g(M), roughly corresponding to (1) short inflexible oligomers, (2) oligomers with 2-20 or so Kuhn steps, and (3) polymeric molecules. We identify (...)
• Gulliver Seminar : Jörg Baschnagel (Institut Charles Sadron)
  Lundi 11 décembre 2023 de 11h30 à 12h30 - Charpak
  Correlations of stress fluctuations in glass-forming liquids
  Many fluids do not crystallize upon cooling, but form amorphous, glassy, solids at low temperature. As liquids, amorphous solids are on average isotropic so that static pair-correlation functions do not allow to distinguish between fluid and solid states. However, a distinction is possible under weak shear (...)
• Gulliver Seminar : Jörg Baschnagel (Institut Charles Sadron)
  Lundi 11 décembre 2023 de 11h30 à 12h30 - Charpak
  Correlations of stress fluctuations in glass-forming liquids
  Many fluids do not crystallize upon cooling, but form amorphous, glassy, solids at low temperature. As liquids, amorphous solids are on average isotropic so that static pair-correlation functions do not allow to distinguish between fluid and solid states. However, a distinction is possible under weak shear (...)
• Gulliver Seminar : Guy Bunin (Technion)
  Lundi 8 janvier de 11h00 à 13h00 - Charpak
  Many species dynamics in space
  Natural ecosystems often harbor individuals of many species, spread out in space. We describe two very different dynamical behaviors ("phases") that can be found in such systems, depending on the interactions between the species. In one phase, population sizes undergone huge fluctuations, spanning many orders of (...)
• Gulliver Seminar : Guy Bunin (Technion)
  Lundi 8 janvier de 11h00 à 13h00 - Charpak
  Many species dynamics in space
  Natural ecosystems often harbor individuals of many species, spread out in space. We describe two very different dynamical behaviors ("phases") that can be found in such systems, depending on the interactions between the species. In one phase, population sizes undergone huge fluctuations, spanning many orders of (...)
• Gulliver Seminar : Léa-Leaticia Pontani (Sorbonne)
  Lundi 15 janvier de 11h00 à 13h00 - Charpak
  Emulsions as a tool to study tissue mechanics
  Emulsions, i.e. packings of oil droplets in water, are a great tool to explore the structure of jammed matter. Indeed, contrary to classical granular systems, emulsions can be made transparent, allowing to image their 3D structure through classical microscopy techniques. It is then possible to study (...)