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Advances in Condensed Matter Physics
Volume 2011, Article ID 871231, 5 pages
Research Article

On Water Density Fluctuations with Helices of Hydrogen Bonds

Division of Advanced Nuclear Energy Systems, National Research Center “Kurchatov Institute”, 1 Kurchatov Square, Moscow 123182, Russia

Received 29 March 2011; Revised 2 June 2011; Accepted 10 June 2011

Academic Editor: Ivan Smalyukh

Copyright © 2011 Alexander Shimkevich and Inessa Shimkevich. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An adaptive model is developed here for the liquid water density fluctuations as momentary dense clusters with helices of hydrogen bonds and nondense tetrahedral clusters of ice. This model can be useful for explanation of liquid water structural anomalies including the high quantity of hydrogen bonds with quasitetrahedral orientation in the nonordered liquid water. The topology of such clusters is essentially differed from the one of the crystalline ice. From this and only this point of view, the liquid water can be considered as a two-structural fluid by dynamic forming the two topological kinds of clusters as a consequence of condensed-matter density fluctuations. Another feature of the dense-water-part clusters is helical ordering of protons which can realize coherent vibrations. A spectral series of such vibrations is determined as a function of the number of molecules into the helical cluster.