Fast Dynamics of Glass-forming Liquids investigated by Dielectric Spectroscopy: a Comparison
U. Schneider, P. Lunkenheimer, R. Brand, and A. Loidl
TL;DR
This study uses dielectric spectroscopy across a wide frequency range to analyze the dynamic behavior of glass-forming liquids and compares the results with neutron and light scattering data, providing insights into their molecular dynamics.
Contribution
It offers a comprehensive comparison of dielectric spectroscopy data with neutron and light scattering results for glass-formers, enhancing understanding of their dynamic processes.
Findings
Dielectric spectra cover nearly 20 decades of frequency.
Comparison reveals consistencies and differences with scattering data.
Results support mode coupling theory in describing glass dynamics.
Abstract
We have performed dielectric spectroscopy on the molecular glass-formers glycerol, propylene carbonate (PC) and the ionic melts CKN and CRN. The frequency range covers almost 20 decades from some micro-Hz to some THz. The meausrement results are compared to neutron and light scattering data and analysed with mode coupling theory.
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Taxonomy
TopicsMaterial Dynamics and Properties