The giant frequency shift of intramolecular O-H vibration band in the raman spectra of water on the silver surface

TL;DR

This study reports a significant frequency shift in the intramolecular O-H vibration band in water's Raman spectra when observed under SERS conditions on silver surfaces, highlighting surface-induced vibrational changes.

Contribution

It reveals a giant frequency shift in water's O-H vibration band in SERS, providing new insights into surface-molecule interactions affecting vibrational spectra.

Findings

Giant frequency shift observed in Raman spectra of water on silver surface.

Shift is specific to SERS conditions with focused laser on Ag surface.

Results suggest strong surface effects on molecular vibrations.

Abstract

The giant frequency shift was observed in Raman spectra for inramolecular O-H vibration band. The effect was observed in SERS-condition experiment, when exciting light was focused by short-focus objective on the Ag-surface, merged in water. The shift was detected relatively to the regularl position of band, measured from the bulk of water under the same other conditions.