Atomic structure dictates the performance of all materials systems; the characteristic of
disordered materials is the significance of spatial and temporal fluctuations on composition …

The microscopic origin of glass formation has been debated for over 50 years. It is generally
believed that glass formation is a kinetic phenomenon [1], although the aspects of liquid …

Germanium dioxide (GeO 2) is a chemical analogue of SiO 2. Furthermore, it is also to some
extent a structural analogue, as the low-and high-pressure short-range order (tetrahedral …

T-modulated differential scanning calorimetry measurements on bulk As x Se 1− x glasses
show that the glass transition temperature T g (x) variation at x< 0.12 is linear with a slope dT …

Recent progress in the description of glassy relaxation and aging are reviewed for the wide
class of network-forming materials such as GeO 2, Ge x Se 1− x, silicates (SiO 2–Na 2 O) or …

Raman scattering from binary Ge x Se 1− x glasses under hydrostatic pressure shows onset
of a steady increase in the frequency of modes of corner-sharing Ge Se 4 tetrahedral units …

The behaviour of bonding constraints with temperature is analyzed from an atomic scale
approach (Molecular Dynamics, MD) combined with partial bond angle distributions (PBAD) …

Network glasses are the physical prototype for many self-organized systems, ranging from
proteins to computer science. Conventional theories of gases, liquids and crystals do not …

Glasses are widely used as analogues for the study of silicate melts. Although they are solid
materials, their structure is inherently complex and difficult to study. However, progress has …

The effects of floppy modes in the thermodynamical properties of a system are studied. From
thermodynamical arguments, we deduce that floppy modes are not at zero frequency and …