43 citations · 199 across the 14 of their papers we have counts for
14 papers
Emergent facilitation by random constraints in a facilitated random walk model of glass
Leo S. I. Lam, Hai-Yao Deng, Wei-Bing Zhang +6
The physics of glass has been a significant topic of interest for decades. Dynamical facilitation is widely believed to be an important characteristic of glassy dynamics, but the p…
Surface mobility gradient and emergent facilitation in glassy films
Qiang Zhai, Xin-Yuan Gao, Chun-Shing Lee +5
Confining glassy polymer into films can substantially modify their local and film-averaged properties. We present a lattice model of film geometry with void-mediated facilitation b…
Distinguishable-particle Glassy Crystal: the simplest molecular model of glass
Leo S. I. Lam, Gautham Gopinath, Zichen Zhao +7
The nature of glassy dynamics and the glass transition are long-standing problems under active debate. In the presence of a structural disorder widely believed to be an essential c…
The distinguishable-particle lattice model of glasses in three dimensions
Bo Li, Chun-Shing Lee, Xin-Yuan Gao +2
The nature of glassy states in realistic finite dimensions is still under fierce debate. Lattice models can offer valuable insights and facilitate deeper theoretical understanding.…
Towards Relating Fragile-To-Strong Transition to Fragile Glass
Chin-Yuan Ong, Chun-Shing Lee, Xin-Yuan Gao +4
Glass formers are in general classified as strong or fragile depending on whether their relaxation rates follow Arrhenius or super-Arrhenius temperature dependence. There are howev…
Kauzmann Paradox: a crossover due to diminishing local excitations
Xin-Yuan Gao, Chin-Yuan Ong, Chun-Shing Lee +3
The configurational entropy of supercooled liquids extrapolates to zero at the Kauzmann temperature, causing a crisis called the Kauzmann paradox. Here, using a class of multicompo…
Diffusion coefficient power laws and defect-driven glassy dynamics in swap acceleration
Gautham Gopinath, Chun-Shing Lee, Xin-Yuan Gao +5
Particle swaps can drastically accelerate dynamics in glass. The mechanism is expected to be vital for a fundamental understanding of glassy dynamics. To extract defining features,…
Emergence of two-level systems in glass formers: a kinetic Monte Carlo study
Xin-Yuan Gao, Hai-Yao Deng, Chun-Shing Lee +2
Using a distinguishable-particle lattice model based on void-induced dynamics, we successfully reproduce the well-known linear relation between heat capacity and temperature at ver…
Large heat-capacity jump in cooling-heating of fragile glass from kinetic Monte Carlo simulations based on a two-state picture
Chun-Shing Lee, Hai-Yao Deng, Cho-Tung Yip +1
The specific heat capacity of glass formers undergoes a hysteresis when subjected to a cooling-heating cycle, with a larger and a more pronounced hysteresis for fragile…
Direct evidence of void induced structural relaxations in colloidal glass formers
Cho-Tung Yip, Masaharu Isobe, Chor-Hoi Chan +7
Particle dynamics in supercooled liquids are often dominated by string-like motions in which lines of particles perform activated hops cooperatively. The structural features trigge…
Kovacs Effect in Glass with Material Memory Revealed in Non-Equilibrium Particle Interactions
Matteo Lulli, Chun-Shing Lee, Ling-Han Zhang +2
The Kovacs effect is a remarkable feature of the ageing dynamics of glass forming liquids near the glass transition temperature. It consists in a non-monotonous evolution of the vo…
Spatial heterogeneities in structural temperature cause Kovacs expansion gap paradox in aging of glasses
Matteo Lulli, Chun-Shing Lee, Hai-Yao Deng +2
Volume and enthalpy relaxation of glasses after a sudden temperature change has been extensively studied since Kovacs seminal work. One observes an asymmetric approach to equilibri…
Fragile Glasses Associated with a Dramatic Drop of Entropy under Supercooling
Chun-Shing Lee, Matteo Lulli, Ling-Han Zhang +2
We perform kinetic Monte Carlo simulations of a distinguishable-particle lattice model of structural glasses with random particle interactions. By varying the interaction distribut…
Configuration-tree Theoretical Calculation of the Mean-Squared Displacement of Particles in Glass Formers
Hai-Yao Deng, Chun-Shing Lee, Matteo Lulli +2
We report an analytical evaluation of the mean-squared displacement (MSD) of the particles in glasses based on their coarse grained trajectories. The calculation is conducted by me…