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  Pressure-induced melting of confined ice

Sotthewes, K., Bampoulis, P., Zandvliet, H. J. W., Lohse, D., & Poelsema, B. (2017). Pressure-induced melting of confined ice. ACS Nano, 11(12), 12723-12731. doi:10.1021/acsnano.7b07472.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-2A5F-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-6CE7-2
Genre: Journal Article

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 Creators:
Sotthewes, K., Author
Bampoulis, P., Author
Zandvliet, H. J. W., Author
Lohse, Detlef1, Author              
Poelsema, B., Author
Affiliations:
1Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063285              

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Free keywords: confined ice; pressure-induced melting; regelation; quasi-liquid layer; phase transition
 Abstract: The classic regelation experiment of Thomson in the 1850s deals with cutting an ice cube, followed by refreezing. The cutting was attributed to pressure-induced melting but has been challenged continuously, and only lately consensus emerged by understanding that compression shortens the O:H nonbond and lengthens the H-O bond simultaneously. This H-O elongation leads to energy loss and lowers the melting point. The hot debate survived well over 150 years, mainly due to a poorly defined heat exchange with the environment in the experiment. In our current experiment, we achieved thermal isolation from the environment and studied the fully reversible ice liquid water transition for water confined between graphene and muscovite mica. We observe a transition from two-dimensional (2D) ice into a quasi-liquid phase by applying a pressure exerted by an atomic force microscopy tip. At room temperature, the critical pressure amounts to about 6 GPa. The transition is completely reversible: refreezing occurs when the applied pressure is lifted. The critical pressure to melt the 2D ice decreases with temperature, and we measured the phase coexistence line between 293 and 333 K. From a Clausius-Clapeyron analysis, we determine the latent heat of fusion of two-dimensional ice at 0.15 eV/molecule, being twice as large as that of bulk ice.

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Language(s): eng - English
 Dates: 2017-11-072017-12-26
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1021/acsnano.7b07472
 Degree: -

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Title: ACS Nano
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 11 (12) Sequence Number: - Start / End Page: 12723 - 12731 Identifier: -