Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2006-03-28
Physical review letters 97 (2006) 238301
Physics
Condensed Matter
Soft Condensed Matter
published in PRL 97, 238301, 2006
Scientific paper
10.1103/PhysRevLett.97.238301
We study by light microscopy a soft glass consisting of a compact arrangement of polydisperse elastic spheres. We show that its slow and non-stationary dynamics results from the unavoidable small fluctuations of temperature, which induce intermittent local mechanical shear in the sample, because of thermal expansion and contraction. Temperature-induced shear provokes both reversible and irreversible rearrangements whose amplitude decreases with time, leading to an exponential slowing down of the dynamics with sample age.
Cipelletti Luca
Mazoyer Sylvain
Ramos Laurence
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