1 results match your criteria: "Institute of Automation and Electrometry of the Russian Academy of Sciences[Affiliation]"
Temperature dependence of spatial nanoheterogeneities of shear modulus in supercooled glycerol.
J Chem Phys
August 2024
Institute of Automation and Electrometry of the Russian Academy of Sciences, 1 Koptyug Ave., Novosibirsk 630090, Russia.
Article Synopsis
- The boson peak in the terahertz vibrational spectrum reveals insights into the nano-heterogeneities of the shear modulus in glass formers, especially when analyzing supercooled liquids.
- Through an examination of light scattering spectra for supercooled glycerol within a temperature range of 180-330 K, researchers determined how the boson peak's frequency correlates with fluctuations in the shear modulus.
- Findings indicate that structural relaxation predominantly influences the temperature dependence of shear modulus fluctuations, showing a rapid decrease at temperatures above ~250 K and a significant relationship with the Landau-Placzek ratio at temperatures below the Arrhenius temperature (TA = 350 K).