Journal ArticleDOI
Fast Dynamics of Glass-Forming Glycerol Studied by Dielectric Spectroscopy.
Reads0
Chats0
TLDR
A minimum is observed in the dielectric loss in the crossover regime from the structural relaxation to the far-infrared response which is compared to theoretical concepts that predict fast relaxational processes.Abstract:
Dielectric spectroscopy up to 370 GHz has been performed on supercooled glycerol for temperatures between 250 and 330 K. The high-frequency dielectric loss, ${\ensuremath{\varepsilon}}^{\ensuremath{'}\ensuremath{'}}$, has been investigated by coherent-source submillimeter-wave spectroscopy. Special attention is given to the dielectric loss in the crossover regime from the structural relaxation to the far-infrared response. A minimum is observed in ${\ensuremath{\varepsilon}}^{\ensuremath{'}\ensuremath{'}}(\ensuremath{\nu})$ which is compared to theoretical concepts that predict fast relaxational processes.read more
Citations
More filters
Journal ArticleDOI
Recent tests of the mode-coupling theory for glassy dynamics
TL;DR: In this paper, an overview of recent tests of the mode-coupling theory for the evolution of structural relaxation in glass-forming liquids is given, focusing on comparisons between the leading-order asymptotic formulae derived for the dynamics near glass transition singularities and the results of neutron scattering, depolarized light scattering, impulsive stimulated light scattering and dielectric-loss spectroscopy for conventional liquids.
Journal ArticleDOI
Dynamic and thermodynamic properties of glass-forming substances
TL;DR: In this paper, the important general dynamic and thermodynamic properties of structural glass-forming substances and classify them into 12 different categories, including those relating to the high frequency fast relaxation, the Johari-Goldstein β-relaxation, and the slow structural α-Relaxation.
Journal ArticleDOI
Structural heterogeneities and mechanical behavior of amorphous alloys
J.C. Qiao,J.C. Qiao,J.C. Qiao,Q. Wang,Jean-Marc Pelletier,Hidemi Kato,Riccardo Casalini,Daniel Crespo,Eloi Pineda,Yao Yao,Yong Yang +10 more
TL;DR: In this paper, the authors review the recent advances on the understanding of structural heterogeneities in metallic supercooled liquids and the influence of the structural heterogeneity on the overall mechanical properties of the corresponding amorphous alloys.
Journal ArticleDOI
The dielectric response of simple organic glass formers
TL;DR: In this article, the complex dielectric permittivity e ν above and below the glass transition temperature, T g, was investigated in the frequency range 10 −3 ÂHz 9 Â Hz and a quantitative line-shape analysis was carried out including both processes by applying the Williams-Watts (WW) approach.
Journal ArticleDOI
Relation between some secondary relaxations and the α relaxations in glass-forming materials according to the coupling model
TL;DR: In this paper, it was shown that secondary or β relaxations in glass-forming materials involve molecular motions that bear strong resemblance to the primitive α relaxations of the coupling model, although the two are not identical.
References
More filters
Book
Principles of Optics
TL;DR: In this paper, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Principles of Optics
TL;DR: In this article, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Book
Relaxations in complex systems
K L Ngai,G B Wright +1 more
TL;DR: A survey and review of relaxation phenomena in many research fields can be found in this article, including Viscous Liquids and Glasses, Relaxation in Polymers, Metallic Glasses and Spin Glasses; Electrical Relaxations in Ionic Conductors.
Journal ArticleDOI
Neutron spin echo study of dynamic correlations near the liquid-glass transition
TL;DR: In this paper, the time dependence of the density correlation function of the ionic system has been investigated using neutron spin-echo measurements around the glass transition temperature of the system.
Related Papers (5)
Viscous Liquids and the Glass Transition. II. Secondary Relaxations in Glasses of Rigid Molecules
G. P. Johari,Martin Goldstein +1 more