1
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Moid M, Finkelstein Y, Moreh R, Maiti PK. Anisotropy of the Proton Kinetic Energy as a Tool for Capturing Structural Transition in Water Confined in a Graphene Nanoslit Pore. J Phys Chem Lett 2022; 13:455-461. [PMID: 34995445 DOI: 10.1021/acs.jpclett.1c03086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The proton dynamics of a 2D water monolayer confined inside a graphene slit pore is studied in Cartesian and molecular frames of reference using molecular dynamics simulations. The vibrational density of states of the proton was calculated versus temperature and was further used to deduce the mean kinetic energy of the hydrogen atoms, Ke(H), in both frames of reference. The directional components of Ke(H) are in good agreement with experimental observations for bulk as well as nanoconfined water. Nonetheless, while in the molecular frame of reference the effect of temperature on the anisotropy ratios of Ke(H) (the ratio between its directional components) are practically invariant between the 2D and 3D cases, those in the Cartesian frame of reference reveal a rather notable reduction across 200 K, indicating the occurrence of an order-disorder transition. This result is further supported by the calculated entropy and enthalpy of the confined water molecules. Overall, it is shown that Ke(H) anisotropy ratios may serve as a valuable order parameter for detecting structural transformations in hydrogen bonds containing molecular systems.
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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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2
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Drużbicki K, Gaboardi M, Fernandez-Alonso F. Dynamics & Spectroscopy with Neutrons-Recent Developments & Emerging Opportunities. Polymers (Basel) 2021; 13:1440. [PMID: 33947108 PMCID: PMC8125526 DOI: 10.3390/polym13091440] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 04/27/2021] [Indexed: 12/19/2022] Open
Abstract
This work provides an up-to-date overview of recent developments in neutron spectroscopic techniques and associated computational tools to interrogate the structural properties and dynamical behavior of complex and disordered materials, with a focus on those of a soft and polymeric nature. These have and continue to pave the way for new scientific opportunities simply thought unthinkable not so long ago, and have particularly benefited from advances in high-resolution, broadband techniques spanning energy transfers from the meV to the eV. Topical areas include the identification and robust assignment of low-energy modes underpinning functionality in soft solids and supramolecular frameworks, or the quantification in the laboratory of hitherto unexplored nuclear quantum effects dictating thermodynamic properties. In addition to novel classes of materials, we also discuss recent discoveries around water and its phase diagram, which continue to surprise us. All throughout, emphasis is placed on linking these ongoing and exciting experimental and computational developments to specific scientific questions in the context of the discovery of new materials for sustainable technologies.
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Affiliation(s)
- Kacper Drużbicki
- Materials Physics Center, CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastian, Spain;
- Polish Academy of Sciences, Center of Molecular and Macromolecular Studies, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Mattia Gaboardi
- Elettra—Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5 in Area Science Park, 34149 Trieste, Italy;
| | - Felix Fernandez-Alonso
- Materials Physics Center, CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastian, Spain;
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastian, Spain
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
- IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
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3
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Ulpiani P, Romanelli G, Onorati D, Krzystyniak M, Andreani C, Senesi R. The effective isotropy of the hydrogen local potential in biphenyl and other hydrocarbons. J Chem Phys 2020; 153:234306. [PMID: 33353342 DOI: 10.1063/5.0029578] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present an experimental investigation of the hydrogen nuclear momentum distribution in biphenyl using deep inelastic neutron scattering. Our experimental results suggest that the local potential affecting hydrogen is both harmonic and isotropic within experimental uncertainties. This feature is interpreted as a consequence of the central limit theorem, whereby the three-dimensional momentum distribution is expected to become a purely Gaussian function as the number of independent vibrational modes in a system increases. We also performed ab initio phonon calculations on biphenyl and other saturated hydrocarbons, from methane to decane. From the results of the simulations, one can observe that the nuclear momentum distribution becomes more isotropic as the number of atoms and normal modes in the molecule increases. Moreover, the predicted theoretical anisotropy in biphenyl is clearly larger than in the experiment. The reason is that the total number of normal modes necessary to reproduce the experimental results is much larger than the number of normal modes encompassed by a single unit cell due to the presence of structural disorder and intermolecular interactions in the real crystal, as well as coupling of different normal modes. Finally, experimental data were collected, over a subset of detectors on the VESUVIO spectrometer at ISIS, with a novel setup to increase the count rate and signal-to-background ratio. We envision that such an optimized experimental setup can provide faster measurements and more stringent constraints for phonon calculations.
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Affiliation(s)
- Pierfrancesco Ulpiani
- 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
| | - Dalila Onorati
- Università degli Studi di Roma "Tor Vergata," Dipartimento di Fisica and NAST Center, Via della Ricerca Scientifica 1, Rome 00133, Italy
| | - Matthew Krzystyniak
- 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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4
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Andreani C, Romanelli G, Parmentier A, Senesi R, Kolesnikov AI, Ko HY, Calegari Andrade MF, Car R. Hydrogen Dynamics in Supercritical Water Probed by Neutron Scattering and Computer Simulations. J Phys Chem Lett 2020; 11:9461-9467. [PMID: 33108193 DOI: 10.1021/acs.jpclett.0c02547] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, an investigation of supercritical water is presented combining inelastic and deep inelastic neutron scattering experiments and molecular dynamics simulations based on a machine-learned potential of ab initio quality. The local hydrogen dynamics is investigated at 250 bar and in the temperature range of 553-823 K, covering the evolution from subcritical liquid to supercritical gas-like water. The evolution of libration, bending, and stretching motions in the vibrational density of states is studied, analyzing the spectral features by a mode decomposition. Moreover, the hydrogen nuclear momentum distribution is measured, and its anisotropy is probed experimentally. It is shown that hydrogen bonds survive up to the higher temperatures investigated, and we discuss our results in the framework of the coupling between intramolecular modes and intermolecular librations. Results show that the local potential affecting hydrogen becomes less anisotropic within the molecular plane in the supercritical phase, and we attribute this result to the presence of more distorted hydrogen bonds.
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Affiliation(s)
- Carla Andreani
- Dipartimento di Fisica and NAST Centre, Università degli Studi di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy
- CNR-IPCF, Istituto per i Processi Chimico-Fisici del CNR di Messina, Viale F. Stagno dAlcontres 37, 98158 Messina, Italy
| | - Giovanni Romanelli
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | | | - Roberto Senesi
- Dipartimento di Fisica and NAST Centre, Università degli Studi di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy
- CNR-IPCF, Istituto per i Processi Chimico-Fisici del CNR di Messina, Viale F. Stagno dAlcontres 37, 98158 Messina, Italy
| | - Alexander I Kolesnikov
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Hsin-Yu Ko
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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5
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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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6
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Finkelstein Y, Nemirovsky D, Moreh R. Kinetic energy of oxygen atoms in water and in silica hydrogel. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2020.110716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Krzystyniak M, Romanelli G, Fernandez-Alonso F. Non-destructive quantitation of hydrogen via mass-resolved neutron spectroscopy. Analyst 2019; 144:3936-3941. [PMID: 31041932 DOI: 10.1039/c8an01729h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This work introduces the use of mass-selective neutron spectroscopy as an analytical tool for the quantitative and non-destructive detection of hydrogen in bulk media. To this end, systematic measurements have been performed on a series of polyethylene standards of known thickness and density, in order to establish optimal data-acquisition protocols as well as associated limits of detection and quantitation. From this analysis, we conclude that state-of-the-art epithermal-neutron instrumentation enables the detection of aeral molar densities of bulk hydrogen in the μmol cm-2 range. We also discuss potential improvements on the horizon, with a view to broadening the scope of the technique across chemistry, materials science, and engineering.
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Affiliation(s)
- Maciej Krzystyniak
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK.
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8
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Ulpiani P, Romanelli G, Onorati D, Parmentier A, Festa G, Schooneveld E, Cazzaniga C, Arcidiacono L, Andreani C, Senesi R. Optimization of detection strategies for epithermal neutron spectroscopy using photon-sensitive detectors. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:073901. [PMID: 31370488 DOI: 10.1063/1.5091084] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 06/15/2019] [Indexed: 06/10/2023]
Abstract
In this work, we discuss an improved detection procedure for the photon-sensitive yttrium-aluminum-perovskite detectors installed on the VESUVIO spectrometer at the ISIS pulsed neutron and muon source. By decreasing the low-level energy threshold of detected photons, we observe an increased count rate up to a factor ∼3, and a decrease of relative error bars and noise of ∼40% and 35%, respectively, for deep inelastic neutron scattering measurements. In addition, we demonstrate how the reported optimization may increase the accuracy in the line shape analysis of neutron Compton profiles, as well as in the application of the mean-force approach to detect the anisotropy and anharmonicity in the single-particle local potential. We envisage that such an upgrade of the detection procedure would have a substantial impact on the VESUVIO scientific programme based on deep inelastic neutron scattering investigations.
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Affiliation(s)
- Pierfrancesco Ulpiani
- 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 OX11 OQX, United Kingdom
| | - Dalila Onorati
- Università degli studi di Roma "Tor Vergata", Centro NAST, Via della Ricerca Scientifica 1, Rome, 00133, Italy
| | - Alexandra Parmentier
- INFN Sezione di Roma Tor Vergata, Via della Ricerca Scientifica 1, I-00133 Rome, Italy
| | - Giulia Festa
- Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi", Piazza del Viminale 1, Rome, 00184, Italy
| | - Erik Schooneveld
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 OQX, United Kingdom
| | - Carlo Cazzaniga
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 OQX, United Kingdom
| | - Laura Arcidiacono
- Università degli studi di Roma "Tor Vergata", Centro NAST, Via della Ricerca Scientifica 1, Rome, 00133, Italy
| | - Carla Andreani
- Università degli studi di Roma "Tor Vergata", Centro NAST, Via della Ricerca Scientifica 1, Rome, 00133, Italy
| | - Roberto Senesi
- Università degli studi di Roma "Tor Vergata", Centro NAST, Via della Ricerca Scientifica 1, Rome, 00133, Italy
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9
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Affiliation(s)
- Wei Fang
- School of Physics and Collaborative Innovation Centre of Quantum Matter, Peking University, Beijing, People's Republic of China
- Thomas Young Centre, London Centre for Nanotechnology, and Department of Physics and Astronomy, University College London, London, UK
- Laboratory of Physical Chemistry, ETH Zurich, Zurich, Switzerland
| | - Ji Chen
- Department of Electronic Structure Theory, Max Plank Institute for Solid State Research, Stuttgart, Germany
| | - Yexin Feng
- School of Physics and Electronics, Hunan University, Changsha, People's Republic of China
| | - Xin-Zheng Li
- School of Physics and Collaborative Innovation Centre of Quantum Matter, Peking University, Beijing, People's Republic of China
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University, Beijing, People's Republic of China
| | - Angelos Michaelides
- Thomas Young Centre, London Centre for Nanotechnology, and Department of Physics and Astronomy, University College London, London, UK
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10
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Krzystyniak M, Drużbicki K, Romanelli G, Gutmann MJ, Rudić S, Imberti S, Fernandez-Alonso F. Nuclear dynamics and phase polymorphism in solid formic acid. Phys Chem Chem Phys 2017; 19:9064-9074. [PMID: 28304035 DOI: 10.1039/c7cp00997f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We apply a unique sequence of structural and dynamical neutron-scattering techniques, augmented with density-functional electronic-structure calculations, to establish the degree of polymorphism in an archetypal hydrogen-bonded system - crystalline formic acid. Using this combination of experimental and theoretical techniques, the hypothesis by Zelsmann on the coexistence of the β1 and β2 phases above 220 K is tested. Contrary to the postulated scenario of proton-transfer-driven phase coexistence, the emerging picture is one of a quantitatively different structural change over this temperature range, whereby the loosening of crystal packing promotes temperature-induced shearing of the hydrogen-bonded chains. The presented work, therefore, solves a fifty-year-old puzzle and provides a suitable framework for the use neutron-Compton-scattering techniques in the exploration of phase polymorphism in condensed matter.
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Affiliation(s)
- Maciej Krzystyniak
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK. and School of Science and Technology, Nottingham Trent University, Clifton Campus, Nottingham, NG11 8NS, UK
| | - Kacper Drużbicki
- Faculty of Physics, Adam Mickiewicz University, Umultowska St. 85, 61-614 Poznan, Poland
| | - Giovanni Romanelli
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK.
| | - Matthias J Gutmann
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK.
| | - Svemir Rudić
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK.
| | - Silvia Imberti
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK.
| | - Felix Fernandez-Alonso
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, UK. and Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK
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11
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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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12
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Andreani C, Romanelli G, Senesi R. Direct Measurements of Quantum Kinetic Energy Tensor in Stable and Metastable Water near the Triple Point: An Experimental Benchmark. J Phys Chem Lett 2016; 7:2216-2220. [PMID: 27214268 DOI: 10.1021/acs.jpclett.6b00926] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study presents the first direct and quantitative measurement of the nuclear momentum distribution anisotropy and the quantum kinetic energy tensor in stable and metastable (supercooled) water near its triple point, using deep inelastic neutron scattering (DINS). From the experimental spectra, accurate line shapes of the hydrogen momentum distributions are derived using an anisotropic Gaussian and a model-independent framework. The experimental results, benchmarked with those obtained for the solid phase, provide the state of the art directional values of the hydrogen mean kinetic energy in metastable water. The determinations of the direction kinetic energies in the supercooled phase, provide accurate and quantitative measurements of these dynamical observables in metastable and stable phases, that is, key insight in the physical mechanisms of the hydrogen quantum state in both disordered and polycrystalline systems. The remarkable findings of this study establish novel insight into further expand the capacity and accuracy of DINS investigations of the nuclear quantum effects in water and represent reference experimental values for theoretical investigations.
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Affiliation(s)
- Carla Andreani
- Università degli Studi di Roma "Tor Vergata" , Dipartimento di Fisica e Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy
- Consiglio Nazionale delle Ricerche, CNR-IPCF, Sezione di Messina 98122, Italy
| | - Giovanni Romanelli
- ISIS Neutron Source, Science Technology Facility Council, Chilton, Oxfordshire OX11 0QX, United Kingdom
| | - Roberto Senesi
- Università degli Studi di Roma "Tor Vergata" , Dipartimento di Fisica e Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy
- Consiglio Nazionale delle Ricerche, CNR-IPCF, Sezione di Messina 98122, Italy
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13
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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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Krzystyniak M, Drużbicki K, Fernandez-Alonso F. Nuclear dynamics in the metastable phase of the solid acid caesium hydrogen sulfate. Phys Chem Chem Phys 2015; 17:31287-96. [PMID: 26549527 DOI: 10.1039/c5cp05636e] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Neutron spectroscopy and first-principles calculations unveil the quantum character of atomic motions in the solid acid CsHSO4.
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Affiliation(s)
- Maciej Krzystyniak
- ISIS Facility
- Rutherford Appleton Laboratory
- Chilton, Didcot
- UK
- School of Science and Technology
| | - Kacper Drużbicki
- Faculty of Physics
- Adam Mickiewicz University
- 61-614 Poznan
- Poland
- Frank Laboratory of Neutron Physics
| | - Felix Fernandez-Alonso
- ISIS Facility
- Rutherford Appleton Laboratory
- Chilton, Didcot
- UK
- Department of Physics and Astronomy
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