131 citations · 380 across the 6 of their papers we have counts for
10 papers · 1 filter
Understanding the Low-Frequency Modes in Disordered Systems at Single-Particle Level
Peng Tan, Ning Xu, A. B. Schofield +1
Normal modes provide a fundamental basis for understanding crucial properties of solids, such as the thermal conductivity, the heat capacity and the sound propagation. While the no…
New jamming scenario: From marginal jamming to deep jamming
Cang Zhao, Kaiwen Tian, Ning Xu
We study properties of jammed packings of frictionless spheres over a wide range of volume fractions. There exists a crossover volume fraction which separates deeply jammed solids…
Excitations of Ellipsoid Packings near Jamming
Z. Zeravcic, N. Xu, A. J. Liu +2
We study the vibrational modes of three-dimensional jammed packings of soft ellipsoids of revolution as a function of particle aspect ratio and packing fraction. At the jamming…
Comparison of low amplitude oscillatory shear in experimental and computational studies of model foams
Micah Lundberg, Kapilanjan Krishan, Ning Xu +2
A fundamental difference between fluids and solids is their response to applied shear. Solids possess static shear moduli, while fluids do not. Complex fluids such as foams display…
Energy transport in jammed sphere packings
Ning Xu, Vincenzo Vitelli, Matthieu Wyart +2
We calculate the normal modes of vibration in jammed sphere packings to obtain the energy diffusivity, a spectral measure of transport. At the boson peak frequency, we find an Ioff…
Excess Vibrational Modes and the Boson Peak in Model Glasses
Ning Xu, Matthieu Wyart, Andrea J. Liu +1
The excess low-frequency normal modes for two widely-used models of glasses were studied at zero temperature. The onset frequencies for the anomalous modes for both systems agree w…