Linking the dielectric Debye process in 2-ethyl-1-hexanol to its density fluctuations

Abstract

We provide the first evidence that the puzzling dielectric Debye process observed in mono-alcohols is coupled to density fluctuations. The results open up for an explanation of the Debye process within the framework of conventional liquid-state theory. The spectral shape of dynamical bulk modulus of 2-ethyl-1-hexanol is nearly identical to that of the shear modulus, and thus the supramolecular structures believed to be responsible for the slow dielectric Debye process are manifested in the bulk modulus in the same way as in the shear modulus.

Main paper: 5 pages, 3 figures. Supplementary Material: 6 pages, 5 figures

References in corpus (4)

• Facets of glass physics
• Investigation of the shear-mechanical and dielectric relaxation processes in two mono-alcohols close to the glass transition
• Supramolecular structures in monohydroxy alcohols: Insights from shear-mechanical studies of a systematic series of octanol structural isomers
• Linking the dielectric Debye process in 2-ethyl-1-hexanol to its density fluctuations

Cited by in corpus (5)

• Slow rheological mode in glycerol and glycerol-water mixtures
• Molecular mechanism of the Debye relaxation in monohydroxy alcohols revealed from rheo-dielectric spectroscopy
• Linking the dielectric Debye process in 2-ethyl-1-hexanol to its density fluctuations
• Molecular dynamics insights into the Debye process of 1-propanol
• Competing Supramolecular Structures: Dielectric and Rheological Spectroscopy on Glycerol/Propanol Mixtures