Water – the Most Anomalous Liquid

Liquid Water, the Most Complex Fluid: New Results in Nanoconfined and Biological Environments

20 Oct 2014, 13:30

1h

FD5 (Nordita, Stockholm)

Speaker

Prof. Gene Stanley (Boston University)

Description

We will introduce some of the 64 anomalies of the most complex of liquids, water — focusing on recent progress in understanding these anomalies by combining information provided by recent spectroscopy experiments (and simulations) on water in bulk, nanoconfined and biological environments [1]. We will interpret evidence from recent experiments designed to test the hypothesis that liquid water has behavior consistent with the hypothesized “liquid polymorphism” in that water might exist in two different phases [2–5]. We will also discuss recent work on nanoconfined water anomalies as well as the apparently related, and highly unusual, behavior of water in biological environments [6–8]. Finally, we will discuss how the general concept of liquid polymorphism is proving useful in understanding anomalies in other liquids, such as silicon, silica [9], and carbon, as well as metallic glasses, which have in common that they are characterized by two characteristic length scales in their interactions. This work has been generously supported by the NSF Chemistry Division and was performed in close collaboration with a number of colleagues. In addition to the co-authors listed above, these include D. Corradini, P. G. Debenedetti, G. Franzese, P. Kumar, J. Luo, M. G. Mazza, O. Mishima, P. H. Poole, P. J. Rossky, S. Sastry, D. Schlesinger, F. Sciortino, K. C. Stokely, and M. Yamada. [1] H. E. Stanley, ed., Liquid Polymorphism [Vol. 152 in the series Advances in Chemical Physics], S. A. Rice, series editor (Wiley, New York, 2013). [2] T. A. Kesselring, E. Lascaris, G. Franzese, S. V. Buldyrev, H. J. Herrmann, and H. E. Stanley, “Finite-Size Scaling Investigation of the Liquid-Liquid Critical Point in ST2 Water and its Stability with Respect to Crystallization,” J. Chem. Phys. 138, 244506 (2013). [3] F. Mallamace, C. Corsaro, S.-H. Chen, and H. E. Stanley, “Transport and Dynamics in Supercooled Confined Water,” Advances in Chemical Physics 152, 203–262 (2013). [4] P. Kumar, K. T. Wikfeldt, D. Schlesinger, L. G. M. Pettersson, and H. E. Stanley, “The Boson Peak in Supercooled Water,” Nature Scientific Reports 3, 1980 (2013). [5] P. Kumar and H. E. Stanley, “Thermal Conductivity Minimum: A New Water Anomaly,” J. Phys. Chem. 115, 14269–14273 (2011). [6] F. Mallamace, C. Corsaro, D. Mallamace, H. E. Stanley, and S.-H. Chen, “Water and Biological Macromolecules,” Advances in Chemical Physics 152, 263–308 (2013). [7] S. Sharma, S. K. Kumar, S. V. Buldyrev, P. G. Debenedetti, P. Rossky, and H. E. Stanley, “A Coarse-Grained Protein Model in a Water-Like Solvent,” Nature Scientific Reports 3, 1841 (2013). [8] F. Mallamace, C. Corsaro, D. Mallamace, P. Baglioni, H. E. Stanley, and S.-H. Chen, “A Possible Role of Water in the Protein Folding Process,” J. Phys. Chem. B 115, 14280–14294 (2011). [9] E. Lascaris, M. Hemmati, S. V. Buldyrev, H. E. Stanley, and C. A. Angell, “Search for the Liquid-Liquid Critical Point in Models of Silica,” J. Chem. Phys. 140, 224502 (2014).