Dielectric secondary relaxation of water in aqueous binary glass-formers

TL;DR

This paper investigates the dielectric relaxation of water in glassy aqueous mixtures, revealing a universal Arrhenius behavior and a general functional dependence of relaxation time on water content across various molecular systems.

Contribution

It demonstrates a universal Arrhenius behavior and a general functional dependence of water's relaxation time on its weight fraction in diverse glass-forming mixtures.

Findings

Dielectric relaxation of water follows Arrhenius law with universal activation energy.

Relaxation time depends on water weight fraction in a general, predictable way.

The behavior is consistent across multiple molecular systems.

Abstract

The dielectric relaxation of water in glassy aqueous binary mixtures exhibits an Arrhenius behaviour with a nearly universal activation energy. We here demonstrate that its characteristic relaxation time follows a remarkably general functional dependence on the weight fraction of water for a wide range of molecular systems.