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Uskov AV, Charnaya EV, Kuklin AI, Lee MK, Chang LJ, Kumzerov YA, Fokin AV. Ga-In Alloy Segregation within a Porous Glass as Studied by SANS. Nanomaterials (Basel) 2023; 13:1357. [PMID: 37110943 PMCID: PMC10144770 DOI: 10.3390/nano13081357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/06/2023] [Accepted: 04/10/2023] [Indexed: 06/19/2023]
Abstract
Nanolattices can play the role of templates for metals and metallic alloys to produce functional nanocomposites with particular properties affected by nanoconfinement. To imitate the impact of nanoconfinement on the structure of solid eutectic alloys, we filled porous silica glasses with the Ga-In alloy, which is widely used in applications. Small-angle neutron scattering was observed for two nanocomposites, which comprised alloys of close compositions. The results obtained were treated using different approaches: the common Guinier and extended Guinier models, the recently suggested computer simulation method based on the initial formulae for neutron scattering, and ordinary estimates of the scattering hump positions. All of the approaches predicted a similar structure of the confined eutectic alloy. The formation of ellipsoid-like indium-rich segregates was demonstrated.
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Affiliation(s)
- Andrei V. Uskov
- Physics Department, St. Petersburg State University, 198504 St. Petersburg, Russia;
| | - Elena V. Charnaya
- Physics Department, St. Petersburg State University, 198504 St. Petersburg, Russia;
| | - Aleksandr I. Kuklin
- Joint Institute for Nuclear Research, 141980 Dubna, Russia;
- Moscow Institute of Physics and Technology, 117303 Moscow, Russia
| | - Min Kai Lee
- Instrument Center of Ministry of Science and Technology at National Cheng Kung University, Tainan 70101, Taiwan;
- Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan;
| | - Lieh-Jeng Chang
- Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan;
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Mitran RA, Ioniţǎ S, Lincu D, Berger D, Matei C. A Review of Composite Phase Change Materials Based on Porous Silica Nanomaterials for Latent Heat Storage Applications. Molecules 2021; 26:E241. [PMID: 33466451 PMCID: PMC7796474 DOI: 10.3390/molecules26010241] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 12/27/2020] [Accepted: 12/31/2020] [Indexed: 12/31/2022] Open
Abstract
Phase change materials (PCMs) can store thermal energy as latent heat through phase transitions. PCMs using the solid-liquid phase transition offer high 100-300 J g-1 enthalpy at constant temperature. However, pure compounds suffer from leakage, incongruent melting and crystallization, phase separation, and supercooling, which limit their heat storage capacity and reliability during multiple heating-cooling cycles. An appropriate approach to mitigating these drawbacks is the construction of composites as shape-stabilized phase change materials which retain their macroscopic solid shape even at temperatures above the melting point of the active heat storage compound. Shape-stabilized materials can be obtained by PCMs impregnation into porous matrices. Porous silica nanomaterials are promising matrices due to their high porosity and adsorption capacity, chemical and thermal stability and possibility of changing their structure through chemical synthesis. This review offers a first in-depth look at the various methods for obtaining composite PCMs using porous silica nanomaterials, their properties, and applications. The synthesis and properties of porous silica composites are presented based on the main classes of compounds which can act as heat storage materials (paraffins, fatty acids, polymers, small organic molecules, hydrated salts, molten salts and metals). The physico-chemical phenomena arising from the nanoconfinement of phase change materials into the silica pores are discussed from both theoretical and practical standpoints. The lessons learned so far in designing efficient composite PCMs using porous silica matrices are presented, as well as the future perspectives on improving the heat storage materials.
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Affiliation(s)
- Raul-Augustin Mitran
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Indepedentei, 060021 Bucharest, Romania; (S.I.); (D.L.)
| | - Simona Ioniţǎ
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Indepedentei, 060021 Bucharest, Romania; (S.I.); (D.L.)
- Faculty of Applied Chemistry and Material Science, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania; (D.B.); (C.M.)
| | - Daniel Lincu
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Indepedentei, 060021 Bucharest, Romania; (S.I.); (D.L.)
- Faculty of Applied Chemistry and Material Science, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania; (D.B.); (C.M.)
| | - Daniela Berger
- Faculty of Applied Chemistry and Material Science, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania; (D.B.); (C.M.)
| | - Cristian Matei
- Faculty of Applied Chemistry and Material Science, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania; (D.B.); (C.M.)
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Nefedov DY, Podorozhkin DY, Charnaya EV, Uskov AV, Haase J, Kumzerov YA, Fokin AV. Liquid-liquid transition in supercooled gallium alloys under nanoconfinement. J Phys Condens Matter 2019; 31:255101. [PMID: 30889565 DOI: 10.1088/1361-648x/ab1111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
NMR studies of the thermal evolution of the Ga-In-Sn and Ga-In liquid alloys embedded into opal matrices were carried out. Temperature dependences of the gallium lineshape, shift of the resonance frequency (Knight shift), and intensity were obtained upon cooling down to the alloy freezing and subsequent warming. A second high-frequency 71Ga NMR signal emerged for both alloys upon cooling, the NMR line intensity transferring gradually into this additional signal. The Knight shifts of the signals differed noticeably. The transformations of the gallium line upon warming were continuous and not affected by changes in the alloy compositions induced by melting. 115In NMR measurements were conducted to monitor the alloy compositions at freezing and melting. The findings suggest the occurrence of the liquid-liquid phase transition in the strongly supercooled alloys under nanoconfinement.
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Affiliation(s)
- D Y Nefedov
- St. Petersburg State University, St. Petersburg 199034, Russia
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Hennes M, Jakob AM, Lehnert F, Ross U, Lotnyk A, Mayr SG. Nanometer-resolved quantification of mechanical response in nanoparticle-based composites. Nanoscale 2016; 8:9398-9404. [PMID: 27093061 DOI: 10.1039/c5nr07223a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nanocomposites constitute an upcoming class of materials that has enormous potential within a broad range of areas, particularly with regard to mechanical applications. However, the tuning of material properties requires a full understanding of the mechanical response of the nanocomposite across all length scales. While characterization from the micro to macroscale is well established at this point, quantification of mechanical behavior at the nanoscale is still an unresolved challenge. With this background, the current work demonstrates the capabilities of quantitative contact resonance atomic force microscopy (CR-AFM) to localize and reliably characterize Ni nanoparticles that are embedded below the surface of thermally oxidized silicon thin films. Correlating these results with numerical simulations as well as high-resolution transmission electron microscopy measurements provides a comprehensive understanding of the subtle interplay between the structure and nanomechanical response of the composite.
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Affiliation(s)
- M Hennes
- Leibniz Institute of Surface Modification (IOM), Permoserstr. 15, 04318 Leipzig, Germany.
| | - A M Jakob
- Leibniz Institute of Surface Modification (IOM), Permoserstr. 15, 04318 Leipzig, Germany.
| | - F Lehnert
- Leibniz Institute of Surface Modification (IOM), Permoserstr. 15, 04318 Leipzig, Germany.
| | - U Ross
- Leibniz Institute of Surface Modification (IOM), Permoserstr. 15, 04318 Leipzig, Germany.
| | - A Lotnyk
- Leibniz Institute of Surface Modification (IOM), Permoserstr. 15, 04318 Leipzig, Germany.
| | - S G Mayr
- Leibniz Institute of Surface Modification (IOM), Permoserstr. 15, 04318 Leipzig, Germany. and Faculty of Physics and Earth Sciences, University of Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
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Kumar VB, Kimmel G, Porat Z, Gedanken A. Formation of particles of bismuth-based binary alloys and intermetallic compounds by ultrasonic cavitation. NEW J CHEM 2015. [DOI: 10.1039/c5nj00781j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports an important understanding of the bismuth reactivity with other low mp metals (Sn, In, Ga, and Zn).
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Affiliation(s)
- Vijay Bhooshan Kumar
- Institute of Nanotechnology and Advanced Materials
- Department of Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
| | - Giora Kimmel
- Institutes of Applied Research
- Ben-Gurion University of the Negev
- Be'er-Sheva 841051
- Israel
| | - Ze'ev Porat
- Institutes of Applied Research
- Ben-Gurion University of the Negev
- Be'er-Sheva 841051
- Israel
- Division of Chemistry
| | - Aharon Gedanken
- Institute of Nanotechnology and Advanced Materials
- Department of Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
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Wang Y, Gao P, Bao D, Wang L, Chen Y, Zhou X, Yang P, Sun S, Zhang M. One Pot, Two Phases: Individual Orthorhombic and Face-Centered Cubic ZnSnO3 Obtained Synchronously in One Solution. Inorg Chem 2014; 53:12289-96. [DOI: 10.1021/ic5014126] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ying Wang
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Peng Gao
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Di Bao
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Longqiang Wang
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Yujin Chen
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Xiaoming Zhou
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Piaoping Yang
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Shuchao Sun
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
| | - Milin Zhang
- College of Materials Science and Chemical Engineering and ‡College of Science, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
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Sundar A, Farzinpour P, Gilroy KD, Tan T, Hughes RA, Neretina S. Eutectic combinations as a pathway to the formation of substrate-based Au-Ge heterodimers and hollowed au nanocrescents with tunable optical properties. Small 2014; 10:3379-3388. [PMID: 24729512 DOI: 10.1002/smll.201400383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 03/27/2014] [Indexed: 06/03/2023]
Abstract
Pairs of immiscible elements with deep eutectics are used to synthesize periodic arrays of heterodimers and hollowed metal nanocrescents. In the devised route, substrate-immobilized Au or Ag nanostructures act as heterogeneous nucleation sites for Ge adatoms. At elevated temperatures the adatoms collect in sufficient quantities to transform each site into a AuGe liquid alloy which, upon cooling, phase separates into elemental components sharing a common interface. The so-formed Au-Ge and Ag-Ge heterodimers exhibit a complex morphology characterized by a noble metal nanocrescent which partially encapsulates one end of the Ge domain. Through the use of a selective etch the Ge component is removed, leaving behind a periodic array of hollow noble metal nanocrescents on the surface of the substrate. Optical characterization of both the heterodimers and nanocrescents indicates that the presence of Ge gives rise to a relative blue-shift in the localized surface plasmon peak, a result that is in stark contrast to the red-shifts typically observed when plasmonic nanostructures are in contact with a dielectric medium. Simulations are used to both rationalize the observed shift and show the potential for deriving unexpected behaviors when semishell-like noble metal structures are in contact with high permittivity dielectric mediums.
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Affiliation(s)
- Aarthi Sundar
- College of Engineering, Temple University, Philadelphia, Pennsylvania, 19122, USA
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Loke D, Skelton JM, Law LT, Wang WJ, Li MH, Song WD, Lee TH, Elliott SR. Guest-cage atomic interactions in a clathrate-based phase-change material. Adv Mater 2014; 26:1725-1730. [PMID: 24375618 DOI: 10.1002/adma.201304199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 10/25/2013] [Indexed: 06/03/2023]
Abstract
New clathrate-based phase-change materials with cage-like structures incorporating Cs and Ba guest atoms, are reported as a means of altering crystallization and amorphization behavior by controlling 'guest-cage' interactions via intra-complex guest vibrational effects. Both a high resistance to spontaneous crystallization, and long retention of the amorphous phase are achieved, as well as a low melting energy. This approach provides a route for achieving cage-controlled semiconductor devices.
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Affiliation(s)
- Desmond Loke
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK; National University of Singapore (NUS) Graduate School for Integrative Sciences and Engineering, 28 Medical Drive, Singapore, 117456
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Linkov P, Artemyev M, Efimov AE, Nabiev I. Comparative advantages and limitations of the basic metrology methods applied to the characterization of nanomaterials. Nanoscale 2013; 5:8781-8798. [PMID: 23934544 DOI: 10.1039/c3nr02372a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Fabrication of modern nanomaterials and nanostructures with specific functional properties is both scientifically promising and commercially profitable. The preparation and use of nanomaterials require adequate methods for the control and characterization of their size, shape, chemical composition, crystalline structure, energy levels, pathways and dynamics of physical and chemical processes during their fabrication and further use. In this review, we discuss different instrumental methods for the analysis and metrology of materials and evaluate their advantages and limitations at the nanolevel.
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Affiliation(s)
- Pavel Linkov
- Laboratory of Nano-Bioengineering, National Research Nuclear University, Moscow Engineering Physics Institute, 31 Kashirskoe sh., 115409 Moscow, Russian Federation.
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Kang J, Zhu J, Curtis C, Blake D, Glatzmaier G, Kim YH, Wei SH. Atomically abrupt liquid-oxide interface stabilized by self-regulated interfacial defects: the case of Al/Al2O3 interfaces. Phys Rev Lett 2012; 108:226105. [PMID: 23003629 DOI: 10.1103/physrevlett.108.226105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 01/18/2012] [Indexed: 06/01/2023]
Abstract
The atomic and electronic structures of the liquid Al/(0001) α-Al(2)O(3) interfaces are investigated by first-principles molecular dynamics simulations. Surprisingly, the formed liquid-solid interface is always atomically abrupt and is characterized by a transitional Al layer that contains a fixed concentration of Al vacancies (~10 at.%). We find that the self-regulation of the defect density in the metal layer is due to the fact that the formation energy of the Al vacancies is readjusted in a way that opposes changes in the defect density. The negative-feedback effect stabilizes the defected transitional layer and maintains the atomic abruptness at the interface. The proposed mechanism is generally applicable to other liquid-metal/metal-oxide systems, and thus of significant importance in understanding the interface structures at high temperature.
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Affiliation(s)
- Joongoo Kang
- National Renewable Energy Laboratory, Golden, Colorado 80401, USA.
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Holmberg VC, Collier KA, Korgel BA. Real-time observation of impurity diffusion in silicon nanowires. Nano Lett 2011; 11:3803-8. [PMID: 21786784 DOI: 10.1021/nl201879u] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Solid-state diffusion of the transition metal impurities, gold (Au), nickel (Ni), and copper (Cu), in silicon (Si) nanowires was studied by in situ transmission electron microscopy. Compared to diffusion in a bulk crystal, Au diffusion is extremely slow when the amount of metal is limited but significantly enhanced when an unlimited supply is available. Cu and Ni diffusion leads to rapid silicide formation but slows considerably with physical encapsulation by a volume-restricting carbon shell.
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Affiliation(s)
- Vincent C Holmberg
- Department of Chemical Engineering, Texas Materials Institute, Center for Nano and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712, United States
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