L’AGENDA CHIMIE PARISTECH - PSL

Controlling interactions in real space across the lengthscales: love, hate and criticality Paddy Royall   Polymers, liquid crystals, surfactants, and colloidal dispersions form the four historic pillars of soft matter. For physicists, colloids were a relatively late entry into the field, driven in no small way by the seminal work of Peter Pusey and Bill…

Responsive microgels: from individual systems to their collective properties Jérôme Crassous, Institute of Physical Chemistry, RWTH Aachen University,52074 Aachen, Germany Abstract: Although poly(N-isopropylacrylamide) microgels have been widely used as model systems for soft colloids, their properties are still far to be completely understood. This stems from their heterogeneous structure strongly differing from an idealized…

Instabilities and geometry of growing tissues Doron Grossman, Collège de France   The vertex model is a discrete often used to described cellular media, where elastic energy depends on the difference of cells' actual area and perimeter from a reference values. Cells are allowed to change neighbors via di fferent topological transition - including division,…

Instabilities and geometry of growing tissues   Doron Grossman (Collège de France)   Abstract: The vertex model is a discrete often used to described cellular media, where elastic energy depends on the difference of cells' actual area and perimeter from a reference values. Cells are allowed to change neighbors via di fferent topological transition -…

Bad metal behavior from slow collective excitations  By Simone Fratini, Institut Néel, Grenoble   Scattering of charge carriers by slow degrees of freedom can drive an electronic system away from normal transport behavior, causing anomalously large resistivities. This phenomenon relies on the idea that the same localization corrections that make the conductivity vanish in disordered…

Surface tension and the strain-dependent topography of soft solids Nicolas Bain, ETH Zurich Abstract: Despite its importance in any adhesion and wetting phenomena, there is a fundamental property that is not yet understood in soft solids: surface elasticity. Also called the Shuttleworth effect, surface elasticity can be boiled down to one question. Does stretching the…

Surface tension and the strain-dependent topography of soft solids Nicolas Bain ETH Zurich Abstract: Despite its importance in any adhesion and wetting phenomena, there is a fundamental property that is not yet understood in soft solids: surface elasticity. Also called the Shuttleworth effect, surface elasticity can be boiled down to one question. Does stretching the…

Basics of surface tension with a focus on the liquid/vapour interface Seminar Graduate Program PSL Chemistry Thursday October 14th at 2pm Amphi Moissan Virginie LAIR Institut de Recherche de Chimie Paris (IRCP) Chimie ParisTech, Université PSL   Phenomenon of capillarity? Why can some insects walk on water? How can we create water-repellent surfaces? It is…

Theory of superconductivity due to Ngai's mechanism in lightly doped SrTiO3    By M. V. Feigel’man L.D. Landau Institute for Theoretical Physics, Chernogolovka, Russia Skolkov Institute of Physics and Technology, Moscow,Russia   We develop a theory of superconducting pairing in low-density Strontium titanate due to quadratic coupling of electron density to soft transverse optical phonons.…

Well-defined Low-valent Cobalt complexes: Simpler and Easier to understand ? Marc Petit  Sorbonne Université   Where ? ESPCI Paris, escalier C, niveau 3, salle Cellule In this presentation we will discusses about two main themes, the common thread of which is organometallic catalysis with cobalt. One focuses on the activation of E-H bonds (with E…

Emergent phenomena in photosynthesis as an opportunity for improved yields and sensing of plants   Ladislav Nedbal Institute of Bio- and Geosciences/Plant Sciences (IBG-2) Forschungszentrum Jülich, D-52428 Jülich, Germany   Ladislav Nedbal studied theoretical solid-state biophysics, graduated from the Faculty of Mathematics and Physics, Charles University, Prague with Vladislav Čápek, and did his Ph.D. in…