Abstract

Liquid water, sometimes called as a matrix of life, accounts for most of the weight of living organisms, and it is said that life activities would not be possible without water. However, its complex physical properties make it difficult to evaluate the dynamics of water molecules in cells, and surprisingly, the role and function of water at the molecular level have not been clarified. The dielectric responses in the terahertz region reflects the sub-picosecond to picosecond molecular dynamics that characterize the properties of water, and provides quantitative information on hydration water, which is essential for the functional expression of biomacromolecules.

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