Matière molle et biophysique - Jean-François Joanny

• Conférence - Mark Bowick - Order in Biological Development

  Jean-François JoannyMatière molle et biophysiqueCollège de FranceAnnée 2024-2025Conférence - Mark Bowick - Order in Biological DevelopmentMark BowickDeputy Director, Kavli Institute for Theoretical Physics, University of California Santa BarbaraMark Bowick est invité par l'assemblée du Collège de France sur proposition du professeur Jean-François Joanny, chaire Matière molle et biophysique.RésuméHow 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 BowickMark 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.

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• Conférence - Mark Bowick - Membranes – Control by Geometry in Graphene Statistical Mechanics

  Jean-François JoannyMatière molle et biophysiqueCollège de FranceAnnée 2024-2025Conférence - Mark Bowick - Membranes – Control by Geometry in Graphene Statistical MechanicsMark BowickDeputy Director, Kavli Institute for Theoretical Physics, University of California Santa BarbaraMark Bowick est invité par l'assemblée du Collège de France sur proposition du professeur Jean-François Joanny, chaire Matière molle et biophysique.RésuméThermalized 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 BowickMark 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.

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  1:08:16
• Conférence - Mark Bowick - Order, Geometry and Defects: Facets of Order

  Jean-François JoannyMatière molle et biophysiqueCollège de FranceAnnée 2024-2025Conférence - Mark Bowick - Order, Geometry and Defects: Facets of OrderMark BowickDeputy Director, Kavli Institute for Theoretical Physics, University of California Santa BarbaraMark Bowick est invité par l'assemblée du Collège de France sur proposition du professeur Jean-François Joanny, chaire Matière molle et biophysique.RésuméSharp 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 BowickMark 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.

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  1:08:20
• Conférence - Alexander Grosberg : Chromatin Hydrodynamics

  Jean-François JoannyMatière molle et biophysiqueCollège de FranceAnnée 2023-2024Polymer Physics in Cell NucleusConférence - Alexander Grosberg : Chromatin HydrodynamicsAlexander GrosbergProfesseur de physique et de mathématiques, université de New York

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  1:07:37
• Conférence - Alexander Grosberg : Activity Driven Folding and Segregation

  Jean-François JoannyMatière molle et biophysiqueCollège de FranceAnnée 2023-2024Polymer Physics in Cell NucleusConférence - Alexander Grosberg : Activity Driven Folding and SegregationAlexander GrosbergProfesseur de physique et de mathématiques, université de New York

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