Syracuse

Probing heterogeneous dynamics of a repulsive colloidal glass by time resolved x-ray correlation spectroscopy

Archive ouverte

Wandersman, Elie | Duri, Agnès | Robert, A | Dubois, E | Dupuis, V | Perzynski, R

Edité par CCSD ; IOP Publishing [1989-....] -

International audience. We present here experimental results obtained by time resolved x-ray correlation spectroscopy,revealing the heterogeneous nature of the dynamics down to the nanoscale in a dense dispersionof magnetic nanoparticles. The dynamical susceptibility, which quantifies the amplitude of thedynamical fluctuations, is investigated in a repulsive colloidal glass. Its value is an order ofmagnitude smaller than the ones found in gels and is length scale independent in theQ-range ofthe x-ray scattering experiment.

• Description
• Sujet/Public
• Outil
• Outil d'anticipation
• Mémoire et thèse
• Gestion