Observing the twinkling fractal nature of the glass transition

Predicted structure, thermo-mechanical properties and Li ion transport in LiAlF4 glass

“…Generally, in glasses only the short-range structure is well defined, whereas structure in the intermediaterange remains a topic for discussion [22,23]. A manifestation of a glass structure is the observed lack of long-range order.…”

About activation energy of viscous flow of glasses and melts

“…1 shows the dependence of Q (T) for vitreous and molten silica. The main changes of the activation energy of viscous flow occur near the glass transition temperature, which indicates the relationship of these changes to the structural changes of the material [3][4][5]8]. Notable the activation energy of viscous flow at T g is quite close to Q L , though it is larger compared with activation energy for the material in the true melt state.…”

“…Vitrification according to the IUPAC definition is considered as a quasi-second order transition in which a supercooled melt yields, on cooling, a glassy structure so that below the glass-transition temperature the physical properties of glasses vary in a manner similar to those of the crystalline phases. The physical picture of the glass transition in amorphous materials with decrease of temperature involves the representation of the topology change of disordered bonds lattice (network) and of increase of Hausdorff dimension of the network [3,4] with supporting evidences on short and medium range order structural changes at glass transition given in [4][5][6][7]. Rearrangements that occur in an amorphous material at the glass transition temperature lead to characteristic jumps of derivative thermodynamic parameters such as the coefficient of thermal expansion or the specific heat.…”

“…Interest in the physics of disordered state of matter and in particular to study the rheology is high, and in recent years a number of results have shed light on the nature of the changes occurring at the glass transition [1][2][3][4][5][6][7]. Vitrification according to the IUPAC definition is considered as a quasi-second order transition in which a supercooled melt yields, on cooling, a glassy structure so that below the glass-transition temperature the physical properties of glasses vary in a manner similar to those of the crystalline phases.…”

Study on the Glass Transition Process of Polymer System Using Differential Scanning Calorimetry and Fourier Transform Infrared Spectroscopy

“…The glass transition process can commonly occur in a polymer system along with the change of parameters, such as the temperature or pressure, which would be accompanied by a micro energy change and a conformation transformation. 9,[45][46][47][48][49] This can help us to understand the glass transition process deeply through studying the micro change process of each group in the polymer system. But within the traditional analysis methods of thermodynamic and dynamic commonly used in the study of glass transition process, most popular method can only obtain macroscopic change information in the glass transition process of a polymer system.…”