SPring-8: Discover special dynamics: Nanometer space of water
RIKEN:
Radiation Photon Science Research Center
Alfred Baron
The research team observed interactions in the “nanometer space” of water.
In the inelastic X-ray scattering spectrum,
Called the “fano effect”,
We have found that interactions similar to the interference effect appear.
Water movement:
One of them is the movement of water in “nanometer space”.
Water, even in such a small space
Can water be described as a continuum movement?
Or the continuum approximation no longer holds,
It was not known whether we had to consider the motion considering the discrete distribution of H2O (0.28 nm).
Research methods and results:
“SPring-8”:
The research team used a high-resolution inelastic X-ray scattering spectrometer [6] installed in the large-scale radiation facility “SPring-8” [5].
Observing collective movement of water:
Observed with extremely high accuracy of 1 mm electron volt (1 meV is 1/1000 electron volt) or less.
We observed the collective motion of water in nanometer space.
Results of this study:
To understand the motion of water in nanometer space
Water diffusion mode and
Interactions between acoustic modes,
It became clear that it should be taken into consideration.
It is now possible to think of liquid models without making them unnecessarily difficult.
Motor-FanTECH