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By Prof. Ernst-Joachim Donth (auth.)

This is the 1st publication devoted to the glass transition considering this idea grew to become famous as a different and self sustaining box of research. The glass transition is a synonym for leisure and dynamics in complicated disordered structures, in particular in drinks. It embraces time-scales starting from picoseconds to years. The e-book describes and interrelates the subsequent procedures: cooperative alpha methods in a chilly liquid, structural rest within the glass close to Tg, the Johari-Goldstein beta approach, the Williams-Götze method in a hot liquid, speedy nonactivated cage damn and boson top, and ultraslow Fischer modes. via describing the salient evidence, explaining and discussing the basics, the writer makes an attempt to introduce a unifying proposal for the full fabric. The formulation, diagrams and references are rigorously chosen to demonstrate the most present principles in regards to the glass transition.

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Additional info for The Glass Transition: Relaxation Dynamics in Liquids and Disordered Materials

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Conditions. Strictly speaking, at Tg , the material is partially frozen in. The slower fluctuations, across the dispersion zone , have been frozen first. , an acceleration of their fluctuations or molecular rearrangements. The real rearrangements in the glass state are faster than expected from the extrapolated rearrangement rate in the equilibrium liquid at the given temperature. , C p is higher than expected without acceleration. Acceleration of 'thawing' in low-frequency parts produces heat at times and temperatures where the high-frequency part freezes during the cooling.

3. Note a useful coincidence: the equivalent Gaussian dispersion in natural logarithms, Oc Inw, is about 97% of FWHM in base ten logarithms, ~ 10glO w (Fig. 2f). 3 Dynamic Glass Transition The term 'dynamic glass transition' seems a useful shorthand for a longer phrase: the logw-T-p (mobility-temperature-pressure) or logr-T-p (relaxation time-temperature-pressure) behavior of the main process is the sum of a and a processes above Tg (see [14] and Fig. 3a) . We used this concept in the Introduction and in the preceding section on the basis of a preliminary definition.

Strictly speaking, at Tg , the material is partially frozen in. The slower fluctuations, across the dispersion zone , have been frozen first. , an acceleration of their fluctuations or molecular rearrangements. The real rearrangements in the glass state are faster than expected from the extrapolated rearrangement rate in the equilibrium liquid at the given temperature. , C p is higher than expected without acceleration. Acceleration of 'thawing' in low-frequency parts produces heat at times and temperatures where the high-frequency part freezes during the cooling.

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