When cooled or pressurized, polymer melts exhibit a tremendous reduction in molecular
mobility. If the process is performed at a constant rate, the structural relaxation time of the …

Amorphous solids, or glasses, are distinguished from crystalline solids by their lack of long-
range structural order. At the level of two-body structural correlations, glassformers show no …

It is widely known that the low-temperature physical properties, such as the heat capacity
and thermal conductivity, of a disordered amorphous solid are markedly different from those …

We combine the swap Monte Carlo algorithm to long multi-CPU molecular dynamics
simulations to analyze the equilibrium relaxation dynamics of model supercooled liquids …

The Johari-Goldstein secondary (β) relaxations are an intrinsic feature of supercooled
liquids and glasses. They are crucial to many properties of glassy materials, but the …

Thin polymer films are ubiquitous in manufacturing and medical applications, and there has
been intense interest in how film thickness and substrate interactions influence film …

The study of glass formation is largely framed by semiempirical models that emphasize the
importance of progressively growing cooperative motion accompanying the drop in fluid …

The nature of alterations to dynamics and vitrification in the nanoscale vicinity of interfaces—
commonly referred to as “nanoconfinement” effects on the glass transition—has been an …

In recent years it has become clear that the interfacial layer formed around nanoparticles in
polymer nanocomposites (PNCs) is critical for controlling their macroscopic properties. The …

Supercooled liquids exhibit spatial heterogeneity in the dynamics of their fluctuating atomic
arrangements. The length and time scales of the heterogeneous dynamics are central to the …