Granular materials have a complex collective behavior based on simple interactions between grains. The global stems from dynamic rearrangements in the micro-structure. local increase (resp. decrease) of density generates jamming unjamming). In this paper, instabilities form localized bursts kinetic energy are studied at both micro-scale (i.e. grain scale) and meso-scale cluster scale). defined ...

Superconducting materials hold great potential to bring radical changes for electric power and high-field magnet technology , enabling high-efficiency generation, high-capacity lossless transmission, small light-weighted electrical equipment, high-speed maglev transportation, ultra-strong magnetic field generation high-resolution resonance imaging (MRI) systems, nuclear (NMR) the future advance...