The addition of nanoparticles (NPs) to a polymer matrix, forming a polymer nanocomposite
(PNC), is known to alter the microscopic dynamic processes of both species which leads to …

A theoretical perspective is provided on the glass transition in molecular liquids at thermal
equilibrium, on the spatially heterogeneous and aging dynamics of disordered materials …

We propose a hopping mechanism for diffusion of large nonsticky nanoparticles subjected to
topological constraints in both unentangled and entangled polymer solids (networks and …

We use scaling theory to derive the time dependence of the mean-square displacement⟨ Δ r
2⟩ of a probe nanoparticle of size d experiencing thermal motion in polymer solutions and …

We use x-ray photon correlation spectroscopy to investigate the structural relaxation process
in a metallic glass on the atomic length scale. We report evidence for a dynamical crossover …

X-ray photon correlation spectroscopy (XPCS) enables the study of sample dynamics
between micrometer and atomic length scales. As a coherent scattering technique, it …

In recent years, X-ray photon correlation spectroscopy (XPCS) has emerged as one of the
key probes of slow nanoscale fluctuations, applicable to a wide range of condensed matter …

We discuss the complex dynamics in condensed matter studied with x-ray photon correlation
spectroscopy (XPCS) in which non-exponential correlation functions and dispersion …

Upon cooling, glass-forming liquids experience a dynamic decoupling in the fast β and slow
α process, which has greatly influenced glass physics. By exploring an extremely wide …

Since their discovery in the 1960s, metallic glasses have continuously attracted much
interest across the physics and materials science communities. In the forefront are their …