Ductile-to-brittle transition and yielding in soft amorphous materials: perspectives and open questions.
Thibaut DivouxElisabeth AgoritsasStefano AimeCatherine BarentinJean-Louis BarratRoberto BenziLudovic BerthierDapeng BiGiulio BiroliDaniel BonnPhilippe BourrianneMehdi BouzidEmanuela Del GadoHéléne Delanoë-AyariKasra FarainSuzanne M FieldingMatthias FuchsJasper van der GuchtSilke HenkesMaziyar JalaalYogesh M JoshiAnaël LemaîtreRobert L LehenySébastien MannevilleKirsten MartensWilson C K PoonMarko PopovićItamar ProcacciaLaurence RamosJames A RichardsSimon A RogersSaverio RossiMauro SbragagliaGilles TarjusFederico ToschiVéronique TrappeJan VermantMatthieu WyartFrancesco ZamponiDavoud ZarePublished in: Soft matter (2024)
Soft amorphous materials are viscoelastic solids ubiquitously found around us, from clays and cementitious pastes to emulsions and physical gels encountered in food or biomedical engineering. Under an external deformation, these materials undergo a noteworthy transition from a solid to a liquid state that reshapes the material microstructure. This yielding transition was the main theme of a workshop held from January 9 to 13, 2023 at the Lorentz Center in Leiden. The manuscript presented here offers a critical perspective on the subject, synthesizing insights from the various brainstorming sessions and informal discussions that unfolded during this week of vibrant exchange of ideas. The result of these exchanges takes the form of a series of open questions that represent outstanding experimental, numerical, and theoretical challenges to be tackled in the near future.