Raman scattering investigation of the water-bridge phenomenon: Some preliminary results

Francesco Aliotta, Maria E Fontanella, Rosina C Ponterio, Franz Saija, Cirino Vasi

Abstract


A floating water-bridge is formed if a high-voltage direct current is applied between two beakers filled of chemically pure water. Raman spectra of the OH-stretching region have been obtained at ambient condition of temperature and pressure. These preliminary results seem to indicate that the hydrogen-bond structure is only slightly modified by the presence of the electric field applied to form the floating water-bridge in agreement with recent neutron scattering investigation. In fact, the polarized Raman spectrum of the pure water and of the water-bridge is almost superimposable. We are planning to carry out further spectroscopic analysis, at different thermodynamic conditions, for better understanding the role played by the hydrogen-bond in driving the formation of the floating water-bridge.

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DOI: http://dx.doi.org/10.1478/C1A1002001