L’AGENDA CHIMIE PARISTECH - PSL

Teaching an old foam new tricks: material design, memories and learning in aging solids Daniel Hexner Disordered solids are often out of equilibrium, evolving slowly as they age. The small incremental changes inherent in the aging process reduce the internal stresses through microscopic plastic deformations within the material. While often considered as merely a nuisance…

Zero group velocity and backward elastic guided modes in homogeneous media  Claire Prada and Alexandre Delory In elastic waveguides, the coupling between shear and compression waves results in complex dispersion effects. Indeed, negative phase velocity modes are observed in most waveguides like plates, tubes or ribbons. These modes, called 'backward', appear when two branches of…

Thermoluminescence, a tool to control defects in materials  Bruno Viana () IRCP Chimie-Paristech, Paris, France  Scientific Seminar   Friday 10th of September 2:00 PM Room Prefabriqué 1 at Chimie ParisTech - PSL     Thermoluminescence or thermally stimulated luminescence is a perfect tool to characterize the defects in the luminescent materials. In general, defects should…

On wrinkles, and what they have to do with liquid crystals A thin elastic sheet attached to a soft substrate often develops wrinkle patterns when subject to an external forcing or as a result of geometric incompatibility. Such patterns appear spontaneously in a variety of natural systems, ranging from plant tissues to drying paint and…

The next CMC seminar will be held on September 17th (10.30 am) in room Génome with a presentation from Erica Benedetti (Université de Paris). The title and abstract can be found below.   Presentation title: Synthesis and applications of planar chiral paracyclophanes   Abstract: Originally discovered in a serendipitous fashion by vapour phase pyrolysis of p-xylene, paracyclophane (pCp) and its derivatives have rapidly gained popularity amongst…

The biophysics of plant morphogenesis   Arezki Boudaoud from Ecole Polytechnique   The seminar will take place in  person in the Gulliver library and by zoom at the link below: What sets the size and form of organisms is still, by large, an open question. During this talk, I will aim at a broad audience…

Dr. Simion Beldean from Babes Bolei University (Cluj Napoca, Romania),  currently present in the CBI/LSABM, will present his research work, focused on the use of GCxGC for the analysis of complex environmental samples, during a meeting that will take place on Monday 20th September, at 14h. This meeting will occur in the LSABM library (F2.09)…

From Superfluids to Mott Insulators with Dipolar Excitons By François Dubin, INSP Paris Semiconductor excitons are composite bosons made by the Coulomb attraction between electrons and holes. Enforcing a spatial separation between these carriers provides a well oriented electric dipole to excitons, which then become model dipolar quasi-particles to explore collective quantum phenomena in the solid-state. In…