Elastic properties of water under negative pressures

Alvarenga, A. D.; Grimsditch, M.; Bodnar, Robert J.

doi:10.1063/1.464497

Cited by 71 publications

(83 citation statements)

References 17 publications

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“…[57][58][59][60][61][62][63][64] Water is in many ways an ideal liquid for such studies, in that it has an extremely high tensile strength for a liquid due to the high degree of hydrogen bonding. However, heterogeneous nucleation generally prevents water from being stretched to its intrinsic tensile strength.…”

Section: T 1 T Fill T 2 > T Fill T 3 < T Fill T Break < Tmentioning

confidence: 99%

Optical Kerr Effect Spectroscopy of Simple Liquids

2008

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Optical Kerr effect (OKE) spectroscopy has become a prominent nonlinear optical technique for studying liquids, which allows for the direct, time-resolved probing of collective orientational diffusion as well as Raman-active intermolecular and intramolecular modes.The temperature-dependent orientational dynamics of 1, n-dicyano n-alkane liquids ranging from dicyanomethane to 1,8-dicyanooctane has been investigated by ultrafast OKE spectroscopy. The dependence of the reorientational times on temperature and viscosity is consistent with the molecules adopting a largely extended structure in the liquid state, with a preference for gauche conformations at the methylenes bonded to the cyanide groups. The data are also suggestive of temperature-dependent, collective structural rearrangements in these liquids.Ultrafast OKE spectroscopy has also been used to study the intermolecular dynamics of aromatic liquids. A model that links the differences in the OKE spectra to corresponding differences in the local ordering of the liquids has been proposed previously based on the temperature-dependent OKE study of five aromatic liquids.The spectra of some other aromatic liquids such as pyridine, pyridine-d5, 2,4,6-trifluoropyridine and 1,3,5-tris(trifluoromethyl) benzene has been obtained to test this model, and the relative importance of molecular shape and electrostatic forces in determining the form of the OKE reduced spectral density for such liquids has been realized. It has recently been shown that liquid tetrahydrofuran (THF) has an unusual structure that features voids of significant dimension. Such voids should affect other observable properties of this liquid. Temperature-dependent, optical Kerr effect spectra for THF and a number of related liquids (furan, cyclopentane, tetrahydropyran, cyclohexane, diethyl ether, hexamethylphosphoramide and n-pentane) has been obtained to test whether the shape of the spectra can be used to reveal the presence of sizeable voids in liquids. Liquid under tension is another interesting system to study:A method based on Berthelot tube technique has been developed to hold benzene and acetonitrile under tension successfully.A new scheme for measuring different tensor elements of the OKE response is developed. A dual-ring, polarization dependent Sagnac interferometer is used to create two co-propagating probe pulses that arrive at the sample at different times but that reach the detector simultaneously and collinearly. The tensor element of the response that is measured is determined by the polarization of the pump pulse. By controlling the relative timing of the probe pulses it is also possible to perform optical subtraction of two different tensor elements of the response at two different times, a strategy that can be used to enhance or suppress particular contributions to the OKE response. OPTICAL KERR EFFECT SPECTROSCOPY OF SIMPLE LIQUIDS

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Section: T 1 T Fill T 2 > T Fill T 3 < T Fill T Break < Tmentioning

confidence: 99%

Optical Kerr Effect Spectroscopy of Simple Liquids

2008

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“…The estimate was based on an extrapolated EoS, using the density obtained from the temperature at which the bubble in the Berthelot tube disappears upon heating, and assuming that the inclusion volume does not change with temperature. A Brillouin scattering study [39] showed that this assumption could be wrong in very thin inclusions, but that it seemed correct in more rounded ones.…”

Section: The Enigma Of the Cavitation Pressure Of Watermentioning

confidence: 99%

Exploring water and other liquids at negative pressure

Caupin

Arvengas

Davitt

et al. 2012

J. Phys.: Condens. Matter

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Water is famous for its anomalies, most of which become dramatic in the supercooled region, where the liquid is metastable with respect to the solid. Another metastable region has been hitherto less studied: the region where the pressure is negative. Here we review the work on the liquid in the stretched state. Characterization of the properties of the metastable liquid before it breaks by nucleation of a vapour bubble (cavitation) is a challenging task. The recent measurement of the equation of state of the liquid at room temperature down to − 26 MPa opens the way to more detailed information on water at low density. The threshold for cavitation in stretched water has also been studied by several methods. A puzzling discrepancy between experiments and theory remains unexplained. To evaluate how specific this behaviour is to water, we discuss the cavitation data on other liquids. We conclude with a description of the ongoing work in our groups.

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“…Berthelot tube method (7,(18)(19)(20). A closed, rigid container with a fixed amount of water is heated until the last vapor bubble disappears at T h .…”

Section: Fig 2 Experiments On Metastable Liquid Water (A)mentioning

confidence: 99%

Anomalies in bulk supercooled water at negative pressure

Pallares

Azouzi

González

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

114

129

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Water anomalies still defy explanation. In the supercooled liquid, many quantities, for example heat capacity and isothermal compressibility κ T , show a large increase. The question arises if these quantities diverge, or if they go through a maximum. The answer is key to our understanding of water anomalies. However, it has remained elusive in experiments because crystallization always occurred before any extremum is reached. Here we report measurements of the sound velocity of water in a scarcely explored region of the phase diagram, where water is both supercooled and at negative pressure. We find several anomalies: maxima in the adiabatic compressibility and nonmonotonic density dependence of the sound velocity, in contrast with a standard extrapolation of the equation of state. This is reminiscent of the behavior of supercritical fluids. To support this interpretation, we have performed simulations with the 2005 revision of the transferable interaction potential with four points. Simulations and experiments are in near-quantitative agreement, suggesting the existence of a line of maxima in κ T (LMκ T ). This LMκ T could either be the thermodynamic consequence of the line of density maxima of water [Sastry S, Debenedetti PG, Sciortino F, Stanley HE (1996) Phys Rev E 53:6144-6154], or emanate from a critical point terminating a liquid-liquid transition [Sciortino F, Poole PH, Essmann U, Stanley HE (1997) Phys Rev E 55:727-737]. At positive pressure, the LMκ T has escaped observation because it lies in the "no man's land" beyond the homogeneous crystallization line. We propose that the LMκ T emerges from the no man's land at negative pressure.scenarios for water | Widom line | Berthelot tube W ater differs in many ways from standard liquids: ice floats on water, and, upon cooling below 48C, the liquid density decreases. In the supercooled liquid, many quantities, for example heat capacity and isothermal compressibility, show a large increase. Extrapolation of experimental data suggested a powerlaw divergence of these quantities at −458C (1). Thirty years ago, the stability-limit conjecture proposed that an instability of the liquid would cause the divergence (2) (Fig. 1A). This is supported by equations of state (EoSs), such as the International Association for the Properties of Water and Steam (IAPWS) EoS (3), fitted on the stable liquid and extrapolated to the metastable regions. Ten years later, the second critical point interpretation, based on simulations (4), proposed that, instead of diverging, the anomalous quantities would reach a peak, near a Widom line (5, 6) that emanates from a liquid-liquid critical point (LLCP) terminating a first-order liquid-liquid transition (LLT) between two distinct liquid phases at low temperature (Fig. 1B). The two scenarios differ in the shape of the line of density maxima (LDM) of water ( Fig. 1 A and B). A recent work (7) has added one point on this line at large negative pressure, but this was not enough to decide between the two scenarios.It has been argued (8) that ...

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Elastic properties of water under negative pressures

Cited by 71 publications

References 17 publications

Optical Kerr Effect Spectroscopy of Simple Liquids

Optical Kerr Effect Spectroscopy of Simple Liquids

Exploring water and other liquids at negative pressure

Anomalies in bulk supercooled water at negative pressure

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