Alexei P. Sokolov

TL;DR: In this article, it has been shown that the form of a low-frequency boson peak in Raman scattering is universal for glasses of different chemical compositions and that from this form one can determine the structural correlation function, i.e. the character of violations of ordered arrangement of atoms within several coordination spheres in non-crystalline solids.

TL;DR: It is shown that the main difference in the dynamic structure factor is the ratio of vibrational to relaxational contributions, which survives even at very low temperatures and determines the low-temperature anomalies of glasses.

TL;DR: The present result supports the concepts that (a) a decisive scale for structural order in glasses is assuresuremath{\sim}10 \AA{}, and (b) the low-frequency excitations are defined by the characteristic length in vitreous structures.

TL;DR: In this article, the authors present dielectric and mechanical relaxation studies of segmental dynamics in various polymers with different side groups and backbone structures, and show that the flexibility of the side groups relative to the backbone is the most important factor controlling fragility in polymers.

TL;DR: In this article, the static and dynamic properties of poly(2-vinylpyridine)/silica nanocomposites are investigated by temperature modulated differential scanning calorimetry, broadband dielectric spectroscopy (BDS), small-angle X-ray scattering (SAXS), and transmission electron microscopy.