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  Large decrease of fluctuations for supercooled water in hydrophobic nanoconfinement

Strekalova, E. G., Mazza, M. G., Stanley, H. E., & Franzese, G. (2011). Large decrease of fluctuations for supercooled water in hydrophobic nanoconfinement. Physical Review Letters, 106(14): 145701. doi:10.1103/PhysRevLett.106.145701.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-B438-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-22AB-D
Genre: Journal Article

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 Creators:
Strekalova, Elena G., Author
Mazza, Marco G.1, Author              
Stanley, H. Eugene, Author
Franzese, Giancarlo, Author
Affiliations:
1Group Non-equilibrium soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063308              

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 Abstract: Using Monte Carlo simulations, we study a coarse-grained model of a water layer confined in a fixed disordered matrix of hydrophobic nanoparticles at different particle concentrations c. For c=0, we find a first-order liquid-liquid phase transition (LLPT) ending in one critical point at low pressure P. For c>0, our simulations are consistent with a LLPT line ending in two critical points at low and high P. For c=25%, at high P and low temperature, we find a dramatic decrease of compressibility, thermal expansion coefficient, and specific heat. Surprisingly, the effect is present also for c as low as 2.4%. We conclude that even a small presence of hydrophobic nanoparticles can drastically suppress thermodynamic fluctuations, making the detection of the LLPT more difficult.

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Language(s): eng - English
 Dates: 2011-04-072011
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1103/PhysRevLett.106.145701
BibTex Citekey: strekalova_large_2011
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Title: Physical Review Letters
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: 4 Volume / Issue: 106 (14) Sequence Number: 145701 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1