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26 April 2024

» arxiv » cond-mat/0505564

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The percolation transition of hydration water: from planar hydrophilic surfaces to proteins
Alla Oleinikova ; Ivan Brovchenko ; Nikolai Smolin ; Aliaksei Krukau ; Alfons Geiger ; Roland Winter ;
Date:	23 May 2005
Subject:	Soft Condensed Matter; Materials Science \| cond-mat.soft cond-mat.mtrl-sci
Abstract:	The formation of a spanning hydrogen-bonded network of hydration water is found to occur via a 2D percolation transition in various systems: smooth hydrophilic surfaces, the surface of a single protein molecule, protein powder and diluted peptide solution. The average number of water-water hydrogen bonds nH at the percolation threshold varies from 2.0 to 2.3, depending on temperature, system size and surface properties. Calculation of nH allows an easy estimation of the percolation threshold of hydration water in various systems, including biomolecules.
Source:	arXiv, cond-mat/0505564
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