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Origin of the non-linear elastic behavior of silicate glasses
Zhen Zhang, Simona Ispas, Walter Kob
For small tension the response of a solid to an applied stress is given by Hooke's law. Outside this linear regime the relation between stress and strain is no longer universal and…
Connecting packing efficiency of binary hard sphere systems to their intermediate range structure
Houfei Yuan, Zhen Zhang, Walter Kob +1
Using computed x-ray tomography we determine the three dimensional (3d) structure of binary hard sphere mixtures as a function of composition and size ratio of the particles, q. Us…
Viscosity of Silica and Doped Silica Melts: Evidence for a Crossover Temperature
John C. Mauro, Charles R. Kurkjian, Prabhat K. Gupta +1
Silica is known as the archetypal strong liquid, exhibiting an Arrhenius viscosity curve with a high glass transition temperature and constant activation energy. However, given the…
Influence of Roughness on Granular Avalanches
Jie Zheng, Yi Xing, Ye Yuan +10
Combining X-ray tomography with simultaneous shear force measurement, we investigate shear-induced granular avalanches using spherical particles with different surface roughness. W…
Dynamics of nanoparticles in polydisperse polymer networks: From free diffusion to hopping
Valerio Sorichetti, Virginie Hugouvieux, Walter Kob
Using molecular dynamics simulations we study the static and dynamic properties of spherical nanoparticles (NPs) embedded in a disordered and polydisperse polymer network. Purely r…
Experimental Test on Edwards Volume Ensemble of Tapped Granular Packings
Ye Yuan, Yi Xing, Jie Zheng +9
Using X-ray tomography, we experimentally investigate granular packings subject to mechanical tapping for three types of beads with different friction coefficients. We validate Edw…