L’AGENDA CHIMIE PARISTECH - PSL

Microfluidic osmotic compression of charge-stabilized colloidal dispersions: Equations of state and collective diffusion coefficients. Annick Hallez, Laboratoire de Génie Chimique, Université de Toulouse. Where : ESPCI, Amphi Holweck. Using a model coupling mass transport and liquid theory calculations for a charge-stabilized colloidal dispersion, it is possible to show that diffusion significantly limits measurement times of…

From nanocrystals to earthquakes: Universal avalanche statistics across 12 decades in length?   Karin Dahmen, Department of Physics, University of Illinois at Urbana Champaign Slowly-compressed nano-crystals, bulk metallic glasses, high entropy alloys, rocks, granular materials, and the earth all deform via intermittent slips or “quakes”. We find that although these systems span 12 decades in…

Searching for the Ideal Glass Transition: Ultra-stable Glasses and Yotta Second Time-Scales Gregory B. McKenna, Department of Chemical and Biomolecular Engineering, North Carolina State University Raleigh, NC 20795   Where : ESPCI, Amphi Holweck Zoom link: https://espci.zoom.us/j/85188005514?pwd=OHYyRTIyeWNxQkFQOUlTRVpOdGxodz09  Abstract: In prior work we have addressed the problem of the glass transition by examining the response of…

Crumpled Matter made from Sticky and Damaged Sheets Andrew B. Croll, Department of Physics, NDSU   The cause for the relatively high compressive strength of a crumpled sheet has long fascinated many researchers. When a sheet is confined in a spherical cavity it slowly bends and collides with itself until it become strapped in a complicated…

And yet it clogs: flow (or no-flow) of suspensions in constricted channels Alban Sauret, University of California Santa BarbaraAbstract:From pipes, to highways, to arteries, stopping the flow is always inconvenient and sometimes dangerous. Clogging can occur whenever a suspension, comprised of discrete particles dispersed in a liquid, flows through a confined geometry. It is a…