“…Soft amorphous materials are disordered assemblies of interacting particles that can resist shear like a solid, but which flow like a liquid under a sufficiently large applied shear stress, see [1] and related references. The solid-like state is usually associated with highly multi-stable energy landscapes, whose origin allows one to classify these materials: entropy for colloidal suspensions [2], free energy for foams or emulsions (surface tension) as well as for soft elastomeric particles (elasticity) [3], and geometry for a granular material (volume times imposed pressure) [4].…”