179 citations · 528 across the 12 of their papers we have counts for
12 papers
Local Rotational Jamming and Multi-Scale Hyperuniformities in an Active Spinner System
Rui Liu, Jianxiao Gong, Mingcheng Yang +1
An active system consisting of many self-spinning dimers is simulated, and a distinct local rotational jamming transition is observed as the density increases. In the low density r…
Decoupling between thermodynamics and dynamics during rejuvenation in colloidal glasses
Xiunan Yang, Hua Tong, Weihua Wang +1
We rejuvenate well-aged quasi-2D binary colloidal glasses by thermal cycling, and systematically measure both the statistical responses and particle-level structural evolutions dur…
Emergence and percolation of rigid domains during colloidal glass transition
Xiunan Yang, Hua Tong, Wei-Hua Wang +1
Using video microscopy, we measure local spatial constraints in disordered binary colloidal samples, ranging from dilute fluids to jammed glasses, and probe their spatial and tempo…
Orientational Order in Disordered Colloidal Suspensions
Xiunan Yang, Wei-Hua Wang, Ke Chen
Exploring structural order in disordered systems including liquids and glasses is an intriguing but challenging issue in condensed matter physics. Here we construct a new parameter…
Coupled Leidenfrost States as a Monodisperse Granular Clock
Rui Liu, Mingcheng Yang, Ke Chen +2
Using an event-driven molecular dynamics simulation, we show that simple monodisperse granular beads confined in coupled columns may oscillate as a new type of granular clock. To t…
Structures of local rearrangements in soft colloidal glasses
Xiunan Yang, Rui Liu, Mingcheng Yang +2
We image local structural rearrangements in soft colloidal glasses under small periodic perturbations induced by thermal cycling. Local structural entropy positively correl…
Phonon Dispersion and Elastic Moduli of Two-Dimensional Disordered Colloidal Packings of Soft Particles with Frictional Interactions
Tim Still, Carl P. Goodrich, Ke Chen +4
Particle tracking and displacement covariance matrix techniques are employed to investigate the phonon dispersion relations of two-dimensional colloidal glasses composed of soft, t…
Phonons in two-dimensional soft colloidal crystals
Ke Chen, Tim Still, Samuel Schoenholz +5
The vibrational modes of pristine and polycrystalline monolayer colloidal crystals composed of thermosensitive microgel particles are measured using video microscopy and covariance…
Phonon Spectra, Nearest Neighbors, and Mechanical Stability of Disordered Colloidal Clusters with Attractive Interactions
Peter J. Yunker, Ke Chen, Zexin Zhang +1
We investigate the influence of morphology and size on the vibrational properties of disordered clusters of colloidal particles with attractive interactions. From measurements of d…
Measurement of correlations between low-frequency vibrational modes and particle rearrangements in quasi-two-dimensional colloidal glasses
K. Chen, M. L. Manning, P. J. Yunker +4
We investigate correlations between low-frequency vibrational modes and rearrangements in two-dimensional colloidal glasses composed of thermosensitive microgel particles which rea…
Rotational and Translational Phonon Modes in Glasses Composed of Ellipsoidal Particles
Peter J. Yunker, Ke Chen, Zexin Zhang +3
The effects of particle shape on the vibrational properties of colloidal glasses are studied experimentally. 'Ellipsoidal glasses' are created by stretching polystyrene spheres to…
Low-frequency vibrations of soft colloidal glasses
Ke Chen, Wouter G. Ellenbroek, Zexin Zhang +8
We conduct experiments on two-dimensional packings of colloidal thermosensitive hydrogel particles whose packing fraction can be tuned above the jamming transition by varying the t…