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Title: Identification of structural relaxation in the dielectric response of water

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [4]
  1. Roskilde Univ., Roskilde (Denmark)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  4. Univ. of Tennessee, Knoxville, TN (United States); Technical Univ. of Dortmund, Dortmund (Germany)

One century ago pioneering dielectric results obtained for water and n-alcohols triggered the advent of molecular rotation diffusion theory considered by Debye to describe the primary dielectric absorption in these liquids. Here, comparing dielectric, viscoelastic, and light scattering results, we unambiguously demonstrate that the structural relaxation appears only as a high-frequency shoulder in the dielectric spectra of water. In contrast, the main dielectric peak is related to a supramolecular structure, analogous to the Debye-like peak observed in monoalcohols.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1347335
Journal Information:
Physical Review Letters, Vol. 116, Issue 23; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 39 works
Citation information provided by
Web of Science

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Cited By (10)

The origin of the Debye relaxation in liquid water and fitting the high frequency excess response journal January 2017
Reconsideration of the relaxational and vibrational line shapes of liquid water based on ultrabroadband dielectric spectroscopy journal January 2018
A unified mechanism for ice and water electrical conductivity from direct current to terahertz journal January 2019
Nonlinear electrical and rheological spectroscopies identify structural and supramolecular relaxations in a model peptide journal January 2019
Coexistence of two structural relaxation processes in monohydroxy alcohol–alkyl halogen mixtures: Dielectric and rheological studies journal July 2018
Carboxylic acids in aqueous solutions: Hydrogen bonds, hydrophobic effects, concentration fluctuations, ionization, and catalysis journal December 2018
Linear and nonlinear shear studies reveal supramolecular responses in supercooled monohydroxy alcohols with faint dielectric signatures journal March 2019
Water dynamics in the hydration shells of biological and non-biological polymers journal June 2019
Viscosity and real-space molecular motion of water: Observation with inelastic x-ray scattering journal August 2018
Seeing real-space dynamics of liquid water through inelastic x-ray scattering journal December 2017

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