1
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Dufils T, Schran C, Chen J, Geim AK, Fumagalli L, Michaelides A. Origin of dielectric polarization suppression in confined water from first principles. Chem Sci 2024; 15:516-527. [PMID: 38179530 PMCID: PMC10763014 DOI: 10.1039/d3sc04740g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/23/2023] [Indexed: 01/06/2024] Open
Abstract
It has long been known that the dielectric constant of confined water should be different from that in bulk. Recent experiments have shown that it is vanishingly small, however the origin of the phenomenon remains unclear. Here we used ab initio molecular dynamics simulations (AIMD) and AIMD-trained machine-learning potentials to understand water's structure and electronic properties underpinning this effect. For the graphene and hexagonal boron-nitride substrates considered, we find that it originates in the spontaneous anti-parallel alignment of the water dipoles in the first two water layers near the solid interface. The interfacial layers exhibit net ferroelectric ordering, resulting in an overall anti-ferroelectric arrangement of confined water. Together with constrained hydrogen-bonding orientations, this leads to much reduced out-of-plane polarization. Furthermore, we directly contrast AIMD and simple classical force-field simulations, revealing important differences. This work offers insight into a property of water that is critical in modulating surface forces, the electric-double-layer formation and molecular solvation, and shows a way to compute it.
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Affiliation(s)
- T Dufils
- Department of Physics and Astronomy, University of Manchester Manchester M13 9PL UK
- National Graphene Institute, University of Manchester Manchester M13 9PL UK
| | - C Schran
- Cavendish Laboratory, Department of Physics, University of Cambridge Cambridge CB3 0HE UK
- Lennard-Jones Centre, University of Cambridge Trinity Ln Cambridge CB2 1TN UK
| | - J Chen
- School of Physics, Peking University Beijing 100871 China
| | - A K Geim
- Department of Physics and Astronomy, University of Manchester Manchester M13 9PL UK
- National Graphene Institute, University of Manchester Manchester M13 9PL UK
| | - L Fumagalli
- Department of Physics and Astronomy, University of Manchester Manchester M13 9PL UK
- National Graphene Institute, University of Manchester Manchester M13 9PL UK
| | - A Michaelides
- Lennard-Jones Centre, University of Cambridge Trinity Ln Cambridge CB2 1TN UK
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
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2
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Bocedi A, Romanelli G, Andreani C, Senesi R. Hydrogen nuclear mean kinetic energy in water down the Mariana Trench: Competition of pressure and salinity. J Chem Phys 2020; 153:134306. [PMID: 33032407 DOI: 10.1063/5.0021926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The Mariana Trench is one of the most famous and extreme environments on our planet. We report experimental values of the hydrogen nuclear mean kinetic energy in water samples at the same physical and chemical conditions than in the Challenger Deep within the Mariana Trench: a pressure of 1092 bars, a temperature of 1 °C, and a salinity of 35 g of salt per kg of water. Results were obtained by deep inelastic neutron scattering at the VESUVIO spectrometer at ISIS. We find that the effect of pressure is to increase the hydrogen nuclear mean kinetic energy with respect to ambient conditions, while ions in the solution have the opposite effect. These results confirm the recent state-of-the-art simulations of the nuclear hydrogen dynamics in water. The changes in the nuclear mean kinetic energy likely correspond to different isotopic fractionation values in the Challenger Deep compared to standard sea water.
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Affiliation(s)
- Alessio Bocedi
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Scienze e Tecnologie Chimiche, Via della Ricerca Scientifica 1, Rome 00133, Italy
| | - Giovanni Romanelli
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11OQX, United Kingdom
| | - Carla Andreani
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and NAST Center, Via della Ricerca Scientifica 1, Rome 00133, Italy
| | - Roberto Senesi
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and NAST Center, Via della Ricerca Scientifica 1, Rome 00133, Italy
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3
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Moid M, Finkelstein Y, Moreh R, Maiti PK. Microscopic Study of Proton Kinetic Energy Anomaly for Nanoconfined Water. J Phys Chem B 2019; 124:190-198. [DOI: 10.1021/acs.jpcb.9b08667] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mohd Moid
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | | | - Raymond Moreh
- Physics Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Prabal K. Maiti
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
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4
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Dong D, Zhang W, van Duin ACT, Bedrov D. Grotthuss versus Vehicular Transport of Hydroxide in Anion-Exchange Membranes: Insight from Combined Reactive and Nonreactive Molecular Simulations. J Phys Chem Lett 2018; 9:825-829. [PMID: 29390610 DOI: 10.1021/acs.jpclett.8b00004] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Combined reactive and nonreactive polarizable molecular dynamics simulations were used to probe the transport mechanisms of hydroxide in hydrated anion-exchange membranes (AEMs) composed of poly(p-phenylene oxide) functionalized with the quaternary ammonium cationic groups. The direct mapping of membrane morphologies between two models allowed us to investigate the contributions of vehicular and Grotthuss mechanisms in hydroxide motion and correlate these mechanisms with the details of local structure. In AEMs with nonblocky polymer structure, where anion transport occurs through narrow (subnanometer size) percolating water channels, simulations indicate the importance of the Grotthuss mechanism. In nonreactive simulations, in order to diffuse through bottlenecks in the water channels, the hydroxide anion has to lose part of its hydration structure, therefore creating a large kinetic barrier for such events. However, when the Grotthuss mechanism is involved, the hydroxide transport through these bottlenecks can easily occur without loss of anion hydration structure and with a much lower barrier.
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Affiliation(s)
- Dengpan Dong
- Department of Materials Science & Engineering, University of Utah , 122 South Central Campus Drive, Room 304, Salt Lake City, Utah 84112, United States
| | - Weiwei Zhang
- Department of Mechanical and Nuclear Engineering, Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Adri C T van Duin
- Department of Mechanical and Nuclear Engineering, Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Dmitry Bedrov
- Department of Materials Science & Engineering, University of Utah , 122 South Central Campus Drive, Room 304, Salt Lake City, Utah 84112, United States
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5
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Olsen RJ, Gillespie AK, Contescu CI, Taylor JW, Pfeifer P, Morris JR. Phase Transition of H 2 in Subnanometer Pores Observed at 75 K. ACS NANO 2017; 11:11617-11631. [PMID: 29083871 DOI: 10.1021/acsnano.7b06640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Here we report a phase transition in H2 adsorbed in a locally graphitic Saran carbon with subnanometer pores 0.5-0.65 nm in width, in which two layers of hydrogen can just barely squeeze, provided they pack tightly. The phase transition is observed at 75 K, temperatures far higher than other systems in which an adsorbent is known to increase phase transition temperatures: for instance, H2 melts at 14 K in the bulk, but at 20 K on graphite because the solid H2 is stabilized by the surface structure. Here we observe a transition at 75 K and 77-200 bar: from a low-temperature, low-density phase to a high-temperature, higher density phase. We model the low-density phase as a monolayer commensurate solid composed mostly of para-H2 (the ground nuclear spin state, S = 0) and the high-density phase as an orientationally ordered bilayer commensurate solid composed mostly of ortho-H2 (S = 1). We attribute the increase in density with temperature to the fact that the oblong ortho-H2 can pack more densely. The transition is observed using two experiments. The high-density phase is associated with an increase in neutron backscatter by a factor of 7.0 ± 0.1. Normally, hydrogen produces no backscatter (scattering angle >90°). This backscatter appears along with a discontinuous increase in the excitation mass from 1.2 amu to 21.0 ± 2.3 amu, which we associate with collective nuclear spin excitations in the orientationally ordered phase. Film densities were measured using hydrogen adsorption. No phase transition was observed in H2 adsorbed in control activated carbon materials.
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Affiliation(s)
- Raina J Olsen
- Materials Science and Technology Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Andrew K Gillespie
- Department of Physics and Astronomy, University of Missouri , Columbia, Missouri 65211, United States
| | - Cristian I Contescu
- Materials Science and Technology Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Jonathan W Taylor
- ISIS Spallation Neutron Source, STFC, Rutherford Appleton Laboratory , Didcot OX11 0QX, United Kingdom
| | - Peter Pfeifer
- Department of Physics and Astronomy, University of Missouri , Columbia, Missouri 65211, United States
| | - James R Morris
- Materials Science and Technology Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
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6
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Finkelstein Y, Moreh R, Shang SL, Wang Y, Liu ZK. Quantum behavior of water nano-confined in beryl. J Chem Phys 2017; 146:124307. [PMID: 28388143 DOI: 10.1063/1.4978397] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The proton mean kinetic energy, Ke(H), of water confined in nanocavities of beryl (Be3Al2Si6O18) at 5 K was obtained by simulating the partial vibrational density of states from density functional theory based first-principles calculations. The result, Ke(H) = 104.4 meV, is in remarkable agreement with the 5 K deep inelastic neutron scattering (DINS) measured value of 105 meV. This is in fact the first successful calculation that reproduces an anomalous DINS value regarding Ke(H) in nano-confined water. The calculation indicates that the vibrational states of the proton of the nano-confined water molecule distribute much differently than in ordinary H2O phases, most probably due to coupling with lattice modes of the hosting beryl nano-cage. These findings may be viewed as a promising step towards the resolution of the DINS controversial measurements on other H2O nano-confining systems, e.g., H2O confined in single and double walled carbon nanotubes.
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Affiliation(s)
- Y Finkelstein
- Nuclear Research Center-Negev, Beer-Sheva 84190, Israel
| | - R Moreh
- Physics Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - S L Shang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Y Wang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Z K Liu
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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7
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Atomic Quantum Dynamics in Materials Research. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/b978-0-12-805324-9.00007-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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8
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Ceriotti M, Fang W, Kusalik PG, McKenzie RH, Michaelides A, Morales MA, Markland TE. Nuclear Quantum Effects in Water and Aqueous Systems: Experiment, Theory, and Current Challenges. Chem Rev 2016; 116:7529-50. [DOI: 10.1021/acs.chemrev.5b00674] [Citation(s) in RCA: 339] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Michele Ceriotti
- Laboratory
of Computational Science and Modeling, Institute of Materials, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Wei Fang
- Thomas
Young Centre, London Centre for Nanotechnology and Department of Physics
and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - Peter G. Kusalik
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Ross H. McKenzie
- School
of Mathematics and Physics, University of Queensland, Brisbane, 4072 Queensland Australia
| | - Angelos Michaelides
- Thomas
Young Centre, London Centre for Nanotechnology and Department of Physics
and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - Miguel A. Morales
- Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Thomas E. Markland
- Department
of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
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9
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Romanelli G, Senesi R, Zhang X, Loh KP, Andreani C. Probing the effects of 2D confinement on hydrogen dynamics in water and ice adsorbed in graphene oxide sponges. Phys Chem Chem Phys 2015; 17:31680-4. [PMID: 26556604 DOI: 10.1039/c5cp05240h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
We studied the single particle dynamics of water and ice adsorbed in graphene oxide (GO) sponges at T = 293 K and T = 20 K. We used Deep Inelastic Neutron Scattering (DINS) at the ISIS neutron and muon spallation source to derive the hydrogen mean kinetic energy, 〈EK〉, and momentum distribution, n(p). The goal of this work was to study the hydrogen dynamics under 2D confinement and the potential energy surface, fingerprinting the hydrogen interaction with the layered structure of the GO sponge. The observed scattering is interpreted within the framework of the impulse approximation. Samples of both water and ice adsorbed in GO show n(p) functions with almost harmonic and anisotropic line shapes and 〈EK〉 values in excess of the values found at the corresponding temperatures in the bulk. The hydrogen dynamics are discussed in the context of the interaction between the interfacial water and ice and the confining hydrophilic surface of the GO sponge.
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Affiliation(s)
- Giovanni Romanelli
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - Roberto Senesi
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy and Consiglio Nazionale delle Ricerche, CNR-IPCF, Sezione di Messina, Italy
| | - Xuan Zhang
- Graphene Research Centre and Centre for Advanced 2D Materials, Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Kian Ping Loh
- Graphene Research Centre and Centre for Advanced 2D Materials, Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Carla Andreani
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy
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10
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Reiter GF, Deb A. The Quantum Mechanics of Nano-Confined Water: New Cooperative Effects Revealed with Neutron and X-Ray Compton Scattering. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/571/1/012001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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McKenzie RH, Bekker C, Athokpam B, Ramesh SG. Effect of quantum nuclear motion on hydrogen bonding. J Chem Phys 2014; 140:174508. [DOI: 10.1063/1.4873352] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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12
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Doron D, Weitman M, Vardi-Kilshtain A, Azuri A, Engel H, Major DT. Multiscale Quantum-Classical Simulations of Enzymes. Isr J Chem 2014. [DOI: 10.1002/ijch.201400026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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13
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Finkelstein Y, Moreh R. Proton dynamics in ice VII at high pressures. J Chem Phys 2013; 139:044716. [DOI: 10.1063/1.4816630] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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14
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Reiter GF, Deb A, Sakurai Y, Itou M, Krishnan VG, Paddison SJ. Anomalous ground state of the electrons in nanoconfined water. PHYSICAL REVIEW LETTERS 2013; 111:036803. [PMID: 23909351 DOI: 10.1103/physrevlett.111.036803] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Indexed: 06/02/2023]
Abstract
Water confined on the scale of 20 Å, is known to have different transport and thermodynamic properties from that of bulk water, and the proton momentum distribution has recently been shown to have qualitatively different properties from that exhibited in bulk water. The electronic ground state of nanoconfined water must be responsible for these anomalies but has so far not been investigated. We show here for the first time, using x-ray Compton scattering and a computational model, that the ground state configuration of the valence electrons in a particular nanoconfined water system, Nafion, is so different from that of bulk water that the weakly electrostatically interacting molecule model of water is clearly inapplicable. We argue that this is a generic property of nanoconfinement. The present results demonstrate that the electrons, and hence the protons as well, of nanoconfined water are in a distinctly different quantum state from that of bulk water. Biological cell function must make use of the properties of this state and cannot be expected to be described correctly by empirical models based on the weakly interacting molecules model.
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Affiliation(s)
- G F Reiter
- Physics Department, University of Houston, Houston, Texas 77204, USA.
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15
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Pietropaolo A, Colognesi D, Catti M, Nale AC, Adams MA, Ramirez-Cuesta AJ, Mayers J. Proton vibrational dynamics in lithium imide investigated through incoherent inelastic and Compton neutron scattering. J Chem Phys 2012. [PMID: 23206005 DOI: 10.1063/1.4767566] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In the present study we report neutron spectroscopic measurements on polycrystalline lithium imide, namely, incoherent inelastic neutron scattering at 20 K, and neutron Compton scattering from 10 K up to room temperature. From the former technique the H-projected density of phonon states up to 100 meV is derived, while the latter works out the spherically averaged single-particle (i.e., H, Li, and N) momentum distributions and, from this, the mean kinetic energies. Only for H at the lowest investigated temperature, non-gaussian components of its momentum distribution are detected. However, these components do not seem directly connected to the system anharmonicity, being fully compatible with the simple N-H bond anisotropy. Neutron data are also complemented by ab initio lattice dynamics simulations, both harmonic and, at room temperature, carried out in the framework of the so-called "quantum colored noise thermostat" method. The single-particle mean kinetic energies in lithium imide as a function of temperature show a quite peculiar behavior at the moment not reproduced by ab initio lattice dynamics methods, at least as far as H and Li are concerned. As matter of fact, neither their low temperature values nor their temperature trends can be precisely explained in terms of standard phonon calculations.
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Affiliation(s)
- A Pietropaolo
- Dipartimento di Fisica G. Occhialini, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126 Milan, Italy
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16
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Engel H, Doron D, Kohen A, Major DT. Momentum Distribution as a Fingerprint of Quantum Delocalization in Enzymatic Reactions: Open-Chain Path-Integral Simulations of Model Systems and the Hydride Transfer in Dihydrofolate Reductase. J Chem Theory Comput 2012; 8:1223-34. [DOI: 10.1021/ct200874q] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hamutal Engel
- Department of Chemistry and
the Lise Meitner−Minerva Center of Computational Quantum Chemistry,
Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Dvir Doron
- Department of Chemistry and
the Lise Meitner−Minerva Center of Computational Quantum Chemistry,
Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Amnon Kohen
- Department of Chemistry, University
of Iowa, Iowa City, Iowa 52242, United States
| | - Dan Thomas Major
- Department of Chemistry and
the Lise Meitner−Minerva Center of Computational Quantum Chemistry,
Bar-Ilan University, Ramat-Gan 52900, Israel
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17
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Burnham CJ, Hayashi T, Napoleon RL, Keyes T, Mukamel S, Reiter GF. The proton momentum distribution in strongly H-bonded phases of water: a critical test of electrostatic models. J Chem Phys 2012; 135:144502. [PMID: 22010722 DOI: 10.1063/1.3649679] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Water is often viewed as a collection of monomers interacting electrostatically with each other. We compare the water proton momentum distributions from recent neutron scattering data with those calculated from two electronic structure-based models. We find that below 500 K these electrostatic models, one based on a multipole expansion, which includes the polarizability of the monomers, are not able to even qualitatively account for the sizable vibrational zero-point contribution to the enthalpy of vaporization. This discrepancy is evidence that the change in the proton well upon solvation cannot be entirely explained by electrostatic effects alone, but requires correlations of the electronic states on the molecules involved in the hydrogen bonds to produce the observed softening of the well.
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Affiliation(s)
- C J Burnham
- Physics Department, University of Houston, Houston, Texas 77204, USA
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18
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Flammini D, Pietropaolo A, Senesi R, Andreani C, McBride F, Hodgson A, Adams MA, Lin L, Car R. Spherical momentum distribution of the protons in hexagonal ice from modeling of inelastic neutron scattering data. J Chem Phys 2012; 136:024504. [DOI: 10.1063/1.3675838] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Andreani C, Colognesi D, Pietropaolo A, Senesi R. Ground state proton dynamics in stable phases of water. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.09.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Seel AG, Sartbaeva A, Mayers J, Ramirez-Cuesta AJ, Edwards PP. Neutron Compton scattering investigation of sodium hydride: From bulk material to encapsulated nanoparticulates in amorphous silica gel. J Chem Phys 2011; 134:114511. [DOI: 10.1063/1.3561493] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Le Caër S, Pin S, Esnouf S, Raffy Q, Renault JP, Brubach JB, Creff G, Roy P. A trapped water network in nanoporous material: the role of interfaces. Phys Chem Chem Phys 2011; 13:17658-66. [DOI: 10.1039/c1cp21980d] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Krzystyniak M, Adams MA, Lovell A, Skipper NT, Bennington SM, Mayers J, Fernandez-Alonso F. Probing the binding and spatial arrangement of molecular hydrogen in porous hosts via neutron Compton scattering. Faraday Discuss 2011; 151:171-97; discussion 199-212. [DOI: 10.1039/c1fd00036e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Pantalei C, Senesi R, Andreani C, Sozzani P, Comotti A, Bracco S, Beretta M, Sokol PE, Reiter G. Interaction of single water molecules with silanols in mesoporous silica. Phys Chem Chem Phys 2011; 13:6022-8. [DOI: 10.1039/c0cp02479a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Mamontov E, Faraone A, Hagaman EW, Han KS, Fratini E. A Low-Temperature Crossover in Water Dynamics in an Aqueous LiCl Solution: Diffusion Probed by Neutron Spin−Echo and Nuclear Magnetic Resonance. J Phys Chem B 2010; 114:16737-43. [DOI: 10.1021/jp108497b] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- E. Mamontov
- Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6473, United States, National Institute of Standards and Technology Center for Neutron Research, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States, Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6201, United States, and CSGI and Department of
| | - A. Faraone
- Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6473, United States, National Institute of Standards and Technology Center for Neutron Research, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States, Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6201, United States, and CSGI and Department of
| | - E. W. Hagaman
- Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6473, United States, National Institute of Standards and Technology Center for Neutron Research, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States, Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6201, United States, and CSGI and Department of
| | - K. S. Han
- Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6473, United States, National Institute of Standards and Technology Center for Neutron Research, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States, Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6201, United States, and CSGI and Department of
| | - E. Fratini
- Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6473, United States, National Institute of Standards and Technology Center for Neutron Research, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States, Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6201, United States, and CSGI and Department of
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25
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Reiter GF, Senesi R, Mayers J. Changes in the zero-point energy of the protons as the source of the binding energy of water to A-phase DNA. PHYSICAL REVIEW LETTERS 2010; 105:148101. [PMID: 21230870 DOI: 10.1103/physrevlett.105.148101] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Indexed: 05/30/2023]
Abstract
The measured changes in the zero-point kinetic energy of the protons are entirely responsible for the binding energy of water molecules to A phase DNA at the concentration of 6 water molecules/base pair. The changes in kinetic energy can be expected to be a significant contribution to the energy balance in intracellular biological processes and the properties of nano-confined water. The shape of the momentum distribution in the dehydrated A phase is consistent with coherent delocalization of some of the protons in a double well potential, with a separation of the wells of 0.2 Å.
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Affiliation(s)
- G F Reiter
- Physics Department, University of Houston, Houston, Texas 77204, USA
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26
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Kolobov IG, Euler WB, Levitsky IA. Optical humidity sensing and ultrasound effect for mesoporous silicon one-dimensional photonic crystals. APPLIED OPTICS 2010; 49:137-141. [PMID: 20062499 DOI: 10.1364/ao.49.000137] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Mesoporous silicon (PSi) microcavities (MC) based on one-dimensional photonic crystals have been studied as optical sensors for relative humidity (RH). Oxidized PSi modified the structure of the MC such that the spectral position of the MC resonance peak depended on the humidity. A spectral shift of the MC resonance peak of up to 6 nm to longer wavelengths was observed as the RH increased from 20% to 85%. Ultrasound affects the MC peak spectral position in the reverse direction as a result of water removal from mesoporous structure. This effect can be used for the stabilization of the peak spectral position for an optical interconnect and fast recovery of the optical gas sensors.
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Affiliation(s)
- I G Kolobov
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, USA
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27
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Mamontov E. Diffusion Dynamics of Water Molecules in a LiCl Solution: A Low-Temperature Crossover. J Phys Chem B 2009; 113:14073-8. [DOI: 10.1021/jp904734y] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eugene Mamontov
- Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6473
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28
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Flammini D, Ricci MA, Bruni F. A new water anomaly: The temperature dependence of the proton mean kinetic energy. J Chem Phys 2009; 130:236101. [DOI: 10.1063/1.3142700] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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29
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Morrone JA, Lin L, Car R. Tunneling and delocalization effects in hydrogen bonded systems: A study in position and momentum space. J Chem Phys 2009; 130:204511. [DOI: 10.1063/1.3142828] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Mamontov E, Vlcek L, Wesolowski DJ, Cummings PT, Rosenqvist J, Wang W, Cole DR, Anovitz LM, Gasparovic G. Suppression of the dynamic transition in surface water at low hydration levels: a study of water on rutile. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2009; 79:051504. [PMID: 19518459 DOI: 10.1103/physreve.79.051504] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2008] [Revised: 03/06/2009] [Indexed: 05/15/2023]
Abstract
Our quasielastic neutron-scattering experiments and molecular-dynamics simulations probing surface water on rutile (TiO2) have demonstrated that a sufficiently high hydration level is a prerequisite for the temperature-dependent crossover in the nanosecond dynamics of hydration water. Below the monolayer coverage of mobile surface water, a weak temperature dependence of the relaxation times with no apparent crossover is observed. We associate the dynamic crossover with interlayer jumps of the mobile water molecules, which become possible only at a sufficiently high hydration level.
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Affiliation(s)
- Eugene Mamontov
- Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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31
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Krzystyniak M, Lalowicz ZT, Chatzidimitriou-Dreismann CA, Lerch M. Proton momentum distribution and anomalous scattering intensities in a pseudo-spherical ammonium ion: a neutron Compton scattering study of (NH(4))(2)PdCl(6) and (NH(4))(2)TeCl(6). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:075502. [PMID: 21817329 DOI: 10.1088/0953-8984/21/7/075502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Neutron Compton scattering (NCS) measurements on ammonium hexachloropalladate and hexachlorotellurate were performed at room temperature. Proton scattering intensities and momentum distributions, as measured in the NCS experiment, have been compared with results expected from the impulse approximation (IA) for both systems. The measurement shows that scattering intensity from protons is anomalous even though their momentum distribution has a second moment that agrees very well with the ab initio calculation for an isolated pseudo-spherical NH(4)(+) ion in the ground vibrational state. Detailed data analysis shows that there is no extra (beyond the IA expected value) broadening or peak shift of proton momentum distribution due to ultra-fast kinetics of the Compton scattering process leading to anomalous scattering intensities. This is most probably due to highly symmetric local potential in the NH(4)(+). Presented results have interesting implications for further theoretical work in the field.
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Affiliation(s)
- M Krzystyniak
- Rutherford Appleton Laboratory, ISIS Facility, Chilton OX11 0QX, UK
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32
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Ricci MA, Bruni F, Giuliani A. “Similarities” between confined and supercooled water. Faraday Discuss 2009; 141:347-58; discussion 443-65. [DOI: 10.1039/b805706k] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Musat R, Renault J, Candelaresi M, Palmer D, Le Caër S, Righini R, Pommeret S. Finite Size Effects on Hydrogen Bonds in Confined Water. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802630] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Musat R, Renault J, Candelaresi M, Palmer D, Le Caër S, Righini R, Pommeret S. Finite Size Effects on Hydrogen Bonds in Confined Water. Angew Chem Int Ed Engl 2008; 47:8033-5. [DOI: 10.1002/anie.200802630] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Dynamics of water in LiCl and CaCl2 aqueous solutions confined in silica matrices: A backscattering neutron spectroscopy study. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.05.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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36
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Abstract
A path-integral Car-Parrinello molecular dynamics simulation of liquid water and ice is performed. It is found that the inclusion of nuclear quantum effects systematically improves the agreement of first-principles simulations of liquid water with experiment. In addition, the proton momentum distribution is computed utilizing a recently developed open path-integral molecular dynamics methodology. It is shown that these results are in good agreement with experimental data.
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Affiliation(s)
- Joseph A Morrone
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
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37
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Weng MH, Lee WJ, Ju SP, Chao CH, Hsieh NK, Chang JG, Chen HL. Adsorption of water molecules inside a Au nanotube: A molecular dynamics study. J Chem Phys 2008; 128:174705. [DOI: 10.1063/1.2907844] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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38
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Pietropaolo A, Senesi R, Andreani C, Botti A, Ricci MA, Bruni F. Excess of proton mean kinetic energy in supercooled water. PHYSICAL REVIEW LETTERS 2008; 100:127802. [PMID: 18517911 DOI: 10.1103/physrevlett.100.127802] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2007] [Indexed: 05/26/2023]
Abstract
We find, by means of a deep inelastic neutron scattering experiment, a significant excess of proton mean kinetic energy E_(k) in supercooled water, compared with that measured in stable liquid and solid phases. The measured values of E_(k) at moderate degrees of supercooling do not fit the predicted linear increase with temperature observed for the water stable phases. This anomalous behavior is confirmed by the shape of the measured momentum distribution, thus supporting a likely occurrence of ground-state quantum delocalization of a proton between the O atoms of two neighboring molecules. These results strongly suggest a transition from a single-well to a double-well potential felt by the delocalized proton, with a reduced first neighbor O-O distance, in the supercooled state, as compared to ambient condition.
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Affiliation(s)
- A Pietropaolo
- Dipartimento di Fisica and Centro, Università degli Studi di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy
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