Advertise on podcast: Matière molle et biophysique - Jean-François Joanny

Jean-François Joanny Matière molle et biophysique Collège de France Année 2025-2026 Raphael Voituriez Institut Jean Perrin, Sorbonne Université Paris Séminaire - Raphael Voituriez : Anomalous and Non-Markovian Reaction Kinetics in Cells

Jean-François Joanny Chaire Chaire Matière molle et biophysique Collège de France Année 2025-2026 02 - Transport dans la cellule : Diffusion dans la cellule

Jean-François Joanny Matière molle et biophysique Collège de France Année 2025-2026 Marino Zerial Human Technopole, Milan Séminaire - Marino Zerial : Molecular Mechanisms of Endocytic Transport in Cell and Tissue Organization

Jean-François Joanny Matière molle et biophysique Collège de France Année 2025-2026 01 - Transport dans la cellule : Mécanismes de transport dans une cellule

Jean-François Joanny Matière molle et biophysique Collège de France Année 2024-2025 Conférence - Mark Bowick - Nonabelian Topological Defects Mark Bowick Deputy Director, Kavli Institute for Theoretical Physics, University of California Santa Barbara Mark Bowick est invité par l'assemblée du Collège de France sur proposition du professeur Jean-François Joanny, chaire Matière molle et biophysique. The line defects of three dimensional uniaxial nematics have a simple abelian algebra governing their interactions and so simply pass through one another. I will discuss, instead, biaxial nematics for which the fundamental group is non-abelian. As a result they exhibit topological entanglement/rigidity, trivalent junctions and associated networks, and stable bound states of pairs of disclinations. They can be experimentally realized in chiral nematics or in hybrid molecular-colloidal systems, realizing the notion of topological rigidity envisaged 50 years ago by Poenaru and Toulouse. Mark Bowick Mark Bowick was born in New Zealand, obtained his B.Sc.(Hons) from the University of Canterbury (New Zealand) and a Ph.D. in theoretical particle physics from Caltech in 1983. This was followed by a Research Associate position in the Particle Theory Group at Yale, winning the First prize award in the 1986 Gravity Research Foundation Essay Competition. This was followed by a postdoctoral position in the Center for Theoretical Physics at MIT. He joined the faculty of the Physics Department at Syracuse University in 1987, holding an Outstanding Junior Investigator award from the Department of Energy from 1987-1993 and becoming Full Professor of Physics in 1998. His research career has been split between theoretical high-energy physics and condensed matter (principally soft matter). He was elected a Fellow of the American Physical Society (Division of Condensed Matter Physics) in 2004 and Fellow of the American Association for the Advancement of Science in 2022. He received the Chancellor's Citation for Exceptional Academic Achievement in 2006 (Syracuse University) and the William Wasserstrom Prize for Excellence in Graduate Teaching and Advising in 2009 (Syracuse University). From 2011-2016 he was Director of the Soft Matter Program at Syracuse University. Since 2016 Bowick has been Deputy Director of the Kavli Institute for Theoretical Physics (Santa Barbara) and Distinguished Visiting Professor of Physics at the University of California Santa Barbara.

Jean-François Joanny Matière molle et biophysique Collège de France Année 2024-2025 Conférence - Mark Bowick - Order in Biological Development Mark Bowick Deputy Director, Kavli Institute for Theoretical Physics, University of California Santa Barbara Mark Bowick est invité par l'assemblée du Collège de France sur proposition du professeur Jean-François Joanny, chaire Matière molle et biophysique. Résumé How does a biological system set up a body plan to produce a final organism with everything in the right place and orientation? I will discuss a developmental system (parhyale) that exploits activity and cell division to establish four-fold orientational order with the flexibility of a liquid but the structural rigidity arising from orientational order. Such ideas can be tested in active (self-propelled) Voronoi models of tissue that include cell division. Mark Bowick Mark Bowick was born in New Zealand, obtained his B.Sc.(Hons) from the University of Canterbury (New Zealand) and a Ph.D. in theoretical particle physics from Caltech in 1983. This was followed by a Research Associate position in the Particle Theory Group at Yale, winning the First prize award in the 1986 Gravity Research Foundation Essay Competition. This was followed by a postdoctoral position in the Center for Theoretical Physics at MIT. He joined the faculty of the Physics Department at Syracuse University in 1987, holding an Outstanding Junior Investigator award from the Department of Energy from 1987-1993 and becoming Full Professor of Physics in 1998. His research career has been split between theoretical high-energy physics and condensed matter (principally soft matter). He was elected a Fellow of the American Physical Society (Division of Condensed Matter Physics) in 2004 and Fellow of the American Association for the Advancement of Science in 2022. He received the Chancellor's Citation for Exceptional Academic Achievement in 2006 (Syracuse University) and the William Wasserstrom Prize for Excellence in Graduate Teaching and Advising in 2009 (Syracuse University). From 2011-2016 he was Director of the Soft Matter Program at Syracuse University. Since 2016 Bowick has been Deputy Director of the Kavli Institute for Theoretical Physics (Santa Barbara) and Distinguished Visiting Professor of Physics at the University of California Santa Barbara.

Jean-François Joanny Matière molle et biophysique Collège de France Année 2024-2025 Conférence - Mark Bowick - Membranes – Control by Geometry in Graphene Statistical Mechanics Mark Bowick Deputy Director, Kavli Institute for Theoretical Physics, University of California Santa Barbara Mark Bowick est invité par l'assemblée du Collège de France sur proposition du professeur Jean-François Joanny, chaire Matière molle et biophysique. Résumé Thermalized elastic membranes show strong scale-dependence of their elastic moduli. A beautiful realization is in the physics of thermalized 2D metamaterials, such as graphene, where thermal effects already set in at microscopic length scales. This opens the way to generating materials of any required modulus from one source material in different geometrical regimes and to the manipulation of nano and micromechanical systems by geometry, rather than external fields. Mark Bowick Mark Bowick was born in New Zealand, obtained his B.Sc.(Hons) from the University of Canterbury (New Zealand) and a Ph.D. in theoretical particle physics from Caltech in 1983. This was followed by a Research Associate position in the Particle Theory Group at Yale, winning the First prize award in the 1986 Gravity Research Foundation Essay Competition. This was followed by a postdoctoral position in the Center for Theoretical Physics at MIT. He joined the faculty of the Physics Department at Syracuse University in 1987, holding an Outstanding Junior Investigator award from the Department of Energy from 1987-1993 and becoming Full Professor of Physics in 1998. His research career has been split between theoretical high-energy physics and condensed matter (principally soft matter). He was elected a Fellow of the American Physical Society (Division of Condensed Matter Physics) in 2004 and Fellow of the American Association for the Advancement of Science in 2022. He received the Chancellor's Citation for Exceptional Academic Achievement in 2006 (Syracuse University) and the William Wasserstrom Prize for Excellence in Graduate Teaching and Advising in 2009 (Syracuse University). From 2011-2016 he was Director of the Soft Matter Program at Syracuse University. Since 2016 Bowick has been Deputy Director of the Kavli Institute for Theoretical Physics (Santa Barbara) and Distinguished Visiting Professor of Physics at the University of California Santa Barbara.

Jean-François Joanny Matière molle et biophysique Collège de France Année 2024-2025 Conférence - Mark Bowick - Order, Geometry and Defects: Facets of Order Mark Bowick Deputy Director, Kavli Institute for Theoretical Physics, University of California Santa Barbara Mark Bowick est invité par l'assemblée du Collège de France sur proposition du professeur Jean-François Joanny, chaire Matière molle et biophysique. Résumé Sharp structures can occur as minimizers of very regular problems. This means symmetry can lead us badly astray and the resultant symmetry breaking may lead to highly counter-intuitive structures. I will illustrate in a discrete example and then some continuous examples. The main soft matter example will be the emergence of faceted shapes as the ground states of liquid-crystalline vesicles and the novel ground states of crystalline order on a 2-sphere. Mark Bowick Mark Bowick was born in New Zealand, obtained his B.Sc.(Hons) from the University of Canterbury (New Zealand) and a Ph.D. in theoretical particle physics from Caltech in 1983. This was followed by a Research Associate position in the Particle Theory Group at Yale, winning the First prize award in the 1986 Gravity Research Foundation Essay Competition. This was followed by a postdoctoral position in the Center for Theoretical Physics at MIT. He joined the faculty of the Physics Department at Syracuse University in 1987, holding an Outstanding Junior Investigator award from the Department of Energy from 1987-1993 and becoming Full Professor of Physics in 1998. His research career has been split between theoretical high-energy physics and condensed matter (principally soft matter). He was elected a Fellow of the American Physical Society (Division of Condensed Matter Physics) in 2004 and Fellow of the American Association for the Advancement of Science in 2022. He received the Chancellor's Citation for Exceptional Academic Achievement in 2006 (Syracuse University) and the William Wasserstrom Prize for Excellence in Graduate Teaching and Advising in 2009 (Syracuse University). From 2011-2016 he was Director of the Soft Matter Program at Syracuse University. Since 2016 Bowick has been Deputy Director of the Kavli Institute for Theoretical Physics (Santa Barbara) and Distinguished Visiting Professor of Physics at the University of California Santa Barbara.

Jean-François Joanny Matière molle et biophysique Collège de France Année 2023-2024 Polymer Physics in Cell Nucleus Conférence - Alexander Grosberg : Chromatin Hydrodynamics Alexander Grosberg Professeur de physique et de mathématiques, université de New York

Jean-François Joanny Matière molle et biophysique Collège de France Année 2023-2024 Polymer Physics in Cell Nucleus Conférence - Alexander Grosberg : Activity Driven Folding and Segregation Alexander Grosberg Professeur de physique et de mathématiques, université de New York

Jean-François Joanny Matière molle et biophysique Collège de France Année 2023-2024 Polymer Physics in Cell Nucleus Conférence - Alexander Grosberg : Equilibrium Polymer Models Alexander Grosberg Professeur de physique et de mathématiques, université de New York

Jean-François Joanny Matière molle et biophysique Collège de France Année 2023-2024 Polymer Physics in Cell Nucleus Conférence - Alexander Grosberg : Phenomenology: Chromatin is a Functional Form of DNA in the Cell Alexander Grosberg Professeur de physique et de mathématiques, université de New York

Jean-François Joanny Matière molle et biophysique Collège de France Année 2023-2024 Séminaire - Ariel Amir : Correlations and Causation in the Bacterial Cell Cycle Ariel Amir Institut Weizmann Résumé How do cells control their size and couple the various ongoing cellular processes? Over the last decade, techniques were developed for extracting information pertinent to this question from correlations between key cell cycle variables, such as size and generation time. I will review this, as well as recent progress showing how conditional correlations (involving more than two variables) help prove the coupling between DNA replication and cell division in bacteria.

Jean-François Joanny Matière molle et biophysique Collège de France Année 2023-2024 06 - Régulation du volume des cellules : Métabolisme et croissance cellulaire

Jean-François Joanny Matière molle et biophysique Collège de France Année 2023-2024 Séminaire - Gabriel Neurohr : Regulation and Relevance of Cytoplasm Density Gabriel Neurohr Professeur Docteur, ETH-Zurich, Suisse Résumé The overall concentration of macromolecules tightly regulated but can change between cell types and environmental conditions. I will talk about, or efforts to elucidate, how cytoplasm density is controlled and alterations in overall macromolecule concentration affect cell physiology.