Journal ArticleDOI
Spatially Heterogeneous Dynamics in Supercooled Liquids
TLDR
In this review, the experimental work that characterizes spatially heterogeneous dynamics in supercooled liquids is described and the following questions are addressed: How large are the heterogeneities?Abstract:
Although it has long been recognized that dynamics in supercooled liquids might be spatially heterogeneous, only in the past few years has clear evidence emerged to support this view. As a liquid is cooled far below its melting point, dynamics in some regions of the sample can be orders of magnitude faster than dynamics in other regions only a few nanometers away. In this review, the experimental work that characterizes this heterogeneity is described. In particular, the following questions are addressed: How large are the heterogeneities? How long do they last? How much do dynamics vary between the fastest and slowest regions? Why do these heterogeneities arise? The answers to these questions influence practical applications of glass-forming materials, including polymers, metallic glasses, and pharmaceuticals.read more
Citations
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Journal ArticleDOI
Supercooled liquids and the glass transition
TL;DR: Current theoretical knowledge of the manner in which intermolecular forces give rise to complex behaviour in supercooled liquids and glasses is discussed.
Journal ArticleDOI
Theoretical perspective on the glass transition and amorphous materials
Ludovic Berthier,Giulio Biroli +1 more
TL;DR: In this article, a theoretical perspective is provided on the glass transition in molecular liquids at thermal equilibrium, on the spatially heterogeneous and aging dynamics of disordered materials, and on the rheology of soft glassy materials.
Journal ArticleDOI
Understanding Ionic Liquids at the Molecular Level: Facts, Problems, and Controversies
TL;DR: The current knowledge about the molecular foundations of IL behavior is discussed and many controversies, speculations, and even myths about the properties that ILs allegedly possess are discussed.
Journal ArticleDOI
Direct Experimental Evidence of a Growing Length Scale Accompanying the Glass Transition
Ludovic Berthier,Giulio Biroli,Jean-Philippe Bouchaud,Luca Cipelletti,D. El Masri,D. L’Hôte,François Ladieu,Matteo Pierno +7 more
TL;DR: New multipoint dynamical susceptibilities are introduced to estimate quantitatively the size of these regions and provide direct experimental evidence that the glass formation of molecular liquids and colloidal suspensions is accompanied by growing dynamic correlation length scales.
Journal ArticleDOI
Glassy dynamics of kinetically constrained models
Felix Ritort,Peter Sollich +1 more
TL;DR: In this article, the authors review the use of kinetically constrained models (KCMs) for the study of dynamics in glassy systems, including spin-facilitated (Ising) models, constrained lattice gases, models inspired by cellular structures such as soap froths, models obtained via mappings from interacting systems without constraints, and related models such as urn, oscillator, tiling and needle models.
References
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Journal ArticleDOI
On the Temperature Dependence of Cooperative Relaxation Properties in Glass‐Forming Liquids
Gerold Adam,Julian H. Gibbs +1 more
TL;DR: In this paper, a molecularkinetic theory was proposed to explain the temperature dependence of relaxation behavior in glass-forming liquids in terms of the temperature variation of the size of the cooperatively rearranging region.
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Formation of glasses from liquids and biopolymers.
TL;DR: The onset of a sharp change in ddT( is the Debye-Waller factor and T is temperature) in proteins, which is controversially indentified with the glass transition in liquids, is shown to be general for glass formers and observable in computer simulations of strong and fragile ionic liquids, where it proves to be close to the experimental glass transition temperature.
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Nonexponential relaxations in strong and fragile glass formers
TL;DR: In this article, a broad correlation of non-debye behavior with non-Arrhenius relaxations was found for different types of glass formers, distinguished by their respective molecular complexity.
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Supercooled Liquids and Glasses
TL;DR: A review of recent progress in the study of supercooled liquids and glasses can be found in this article, where several basic features of the dynamics and thermodynamics of super cooled liquid and glasses are described.
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Size-Dependent Depression of the Glass Transition Temperature in Polymer Films
TL;DR: In this article, the glass transition temperature of thin polystyrene films has been measured as a function of film thickness, and it was found that the transition decreases in temperature as the thickness of the film is reduced.