A unified mechanism for ice and water electrical conductivity from direct current to terahertz

Literature Information

Publication Date 2019-03-22
DOI 10.1039/C9CP00257J
Impact Factor 3.676
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Abstract

Knowledge of the electrical properties of liquid and solid water is extremely important for a detailed understanding of their structures. Though the macroscopic parameters differ, ice and water still have much in common from the dielectric spectroscopy viewpoint and should thus be considered on the same footing for the study of their electrical properties. In this work, we treat the complete dielectric spectra of ice and water, covering fourteen orders in frequency magnitude. Introducing the notion of ‘excess proton gas’ we explain the similarities between ice and water, and derive a model which links together the infrared vibrations and the static conductivity and dielectric constant. This model provides a very good description of spectra up to 10 THz and reproduces well the temperature dependence of the dielectric constant for both ice and water. A new intermolecular polarization mechanism suitable for ice and water provides good insights for the understanding of their electrical properties.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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