Daniele Fioretto

TL;DR: The atomic dynamics of the glass to that of the relevant crystal suggests the identical nature of the two features, including the boson peak, which matches the TA singularity in energy and height.

TL;DR: In this paper, the authors studied the dynamic glass transition of two glass-forming epoxy resins, poly [(phenyl glycidyl ether)-co-formaldehyde] and diglycidyl acid of bisphenol-A. The main transition has three parts: a process at high temperature, the a′ process between the two crossover regions, and the α process at low temperatures.

TL;DR: Measurements of the sound attenuation coefficient in vitreous silica, for sound waves of wavelength between 50 and 80 nm, performed with the new inelastic UV light scattering technique indicate that in silica glass a crossover between a temperature-dependent and temperature-independent acoustic attenuation mechanism occurs at Q approximately equal to 0.15 nm(-1).

TL;DR: In this article, the dynamics of diglycidyl ether of bisphenol-A (DGEBA) was studied by employing broadband dielectric spectroscopy over a wide temperature range extending from below to above the glass-transition temperature.

TL;DR: The results reveal that, in the absence of local structure transformations, the Debye level and the glass-specific excess of vibrational states above it have the same dependence on density, and the evolution of the DOS is fully described by the transformation of the elastic medium.