1
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Aïssa B, Ali A. Piezo inkjet formation of Ag nanoparticles from microdots arrays for surface plasmonic resonance. Sci Rep 2024; 14:4806. [PMID: 38413692 PMCID: PMC10899252 DOI: 10.1038/s41598-024-55188-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 02/21/2024] [Indexed: 02/29/2024] Open
Abstract
The study aims to explore a novel approach for fabricating plasmonic nanostructures to enhance the optical properties and performance of various optoelectronic devices. The research begins by employing a piezo-inkjet printing technique to deposit drops containing Ag nanoparticles (NPs) onto a glass substrate at a predefined equidistance, with the goal of obtaining arrays of Ag microdots (Ag-µdots) on the glass substrate. This process is followed by a thermal annealing treatment. The printing parameters are first optimized to achieve uniform deposition of different sizes of Ag-µdots arrays by controlling the number of Ag ink drops. Subsequently, the printed arrays undergo thermal annealing at various temperatures in air for 60 min, enabling precise and uniform control over nanoparticle formation. The printed Ag nanoparticles are characterized using field emission scanning electron microscopy and atomic force microscopy to analyze their morphological features, ensuring their suitability for plasmonic applications. UV-Vis spectrophotometry is employed to investigate the enhanced surface-plasmonic-resonance properties of the printed AgNPs. Measurements confirm that the equidistant arrays of AgNPs obtained from annealing Ag microdots exhibit enhanced light-matter interaction, leading to a surface plasmon resonance response dependent on the Ag NPs' specific surface area. These enhanced surface plasmonic resonances open avenues for developing cutting-edge optoelectronic devices that leverage the benefits of plasmonic nanostructures, thereby enabling new opportunities for future technological developments across various fields.
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Affiliation(s)
- Brahim Aïssa
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), Qatar Foundation, P.O. Box 34110, Doha, Qatar.
| | - Adnan Ali
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), Qatar Foundation, P.O. Box 34110, Doha, Qatar
- Department of Chemical Engineering, Jeju National University, Jeju, 63243, Korea
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2
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Walter TN, Oliver N, Mohney SE. Electron beam evaporated Au islands as a nanoscale etch mask on few-layer MoS 2 and fabrication of top-edge hybrid contacts for field-effect transistors. NANOTECHNOLOGY 2021; 32:025203. [PMID: 33055368 DOI: 10.1088/1361-6528/abbb4a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Metal contacts to two-dimensional layered semiconductors are crucial to the performance of field-effect transistors (FETs) and other applications of layered materials in nanoelectronics and beyond. In this work, the wetting behavior of very thin Au films on exfoliated MoS2 flakes was studied and evaluated as a nanoscale, self-assembled dry etch mask. Etching nanoscale pits into MoS2 flakes prior to metallization from the top of the flake forms edge sites that contribute some fraction of edge contacts in addition to top contacts for additional carrier injection and lower contact resistance. The morphology and thickness of Au islands and MoS2 were studied with scanning electron microscopy and atomic force microscopy before and after etching with low-power plasmas. A Cl2 plasma etch of 10 s with a Au island mask of 6 nm (nominal) showed the best resulting morphology among the plasma conditions studied. Back-gated MoS2-based FETs on SiO2/p +-Si with Ti/Au contacts were fabricated using a Cl2 etch of only the contact regions, and they yielded devices with ON currents of 100s µA/µm, ON/OFF ratios ⩾106, and contact resistance <10 kΩ µm. The best set of devices had a very low contact resistance of ∼1 kΩ µm with almost no dependence of contact resistance on gating. Using nanoscale etch masks made from metal islands could be highly customizable and shows promise for engineering FETs with low contact resistance.
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Affiliation(s)
- Timothy N Walter
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, United States of America
| | - Nailah Oliver
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA, United States of America
| | - Suzanne E Mohney
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, United States of America
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3
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Kamp M, Tymoczko A, Popescu R, Schürmann U, Nadarajah R, Gökce B, Rehbock C, Gerthsen D, Barcikowski S, Kienle L. Composition and structure of magnetic high-temperature-phase, stable Fe-Au core-shell nanoparticles with zero-valent bcc Fe core. NANOSCALE ADVANCES 2020; 2:3912-3920. [PMID: 36132793 PMCID: PMC9417649 DOI: 10.1039/d0na00514b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/09/2020] [Indexed: 05/14/2023]
Abstract
Advanced quantitative TEM/EDXS methods were used to characterize different ultrastructures of magnetic Fe-Au core-shell nanoparticles formed by laser ablation in liquids. The findings demonstrate the presence of Au-rich alloy shells with varying composition in all structures and elemental bcc Fe cores. The identified structures are metastable phases interpreted by analogy to the bulk phase diagram. Based on this, we propose a formation mechanism of these complex ultrastructures. To show the magnetic response of these magnetic core nanoparticles protected by a noble metal shell, we demonstrate the formation of nanostrands in the presence of an external magnetic field. We find that it is possible to control the lengths of these strands by the iron content within the alloy nanoparticles.
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Affiliation(s)
- Marius Kamp
- Institute for Materials Science, Synthesis and Real Structure, Kiel University Kaiserstraße 2 24143 Kiel Germany
| | - Anna Tymoczko
- Technical Chemistry I, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Universitätsstrasse 7 45141 Essen Germany
| | - Radian Popescu
- Laboratory for Electron Microscopy (LEM), Karlsruhe Institute of Technology (KIT) Engesserstr. 7 76131 Karlsruhe Germany
| | - Ulrich Schürmann
- Institute for Materials Science, Synthesis and Real Structure, Kiel University Kaiserstraße 2 24143 Kiel Germany
| | - Ruksan Nadarajah
- Technical Chemistry I, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Universitätsstrasse 7 45141 Essen Germany
| | - Bilal Gökce
- Technical Chemistry I, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Universitätsstrasse 7 45141 Essen Germany
| | - Christoph Rehbock
- Technical Chemistry I, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Universitätsstrasse 7 45141 Essen Germany
| | - Dagmar Gerthsen
- Laboratory for Electron Microscopy (LEM), Karlsruhe Institute of Technology (KIT) Engesserstr. 7 76131 Karlsruhe Germany
| | - Stephan Barcikowski
- Technical Chemistry I, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Universitätsstrasse 7 45141 Essen Germany
| | - Lorenz Kienle
- Institute for Materials Science, Synthesis and Real Structure, Kiel University Kaiserstraße 2 24143 Kiel Germany
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4
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Vernieres J, Steinhauer S, Zhao J, Grammatikopoulos P, Ferrando R, Nordlund K, Djurabekova F, Sowwan M. Site-Specific Wetting of Iron Nanocubes by Gold Atoms in Gas-Phase Synthesis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900447. [PMID: 31380190 PMCID: PMC6662390 DOI: 10.1002/advs.201900447] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/04/2019] [Indexed: 05/24/2023]
Abstract
A key challenge in nanotechnology is the rational design of multicomponent materials that beat the properties of their elemental counterparts. At the same time, when considering the material composition of such hybrid nanostructures and the fabrication process to obtain them, one should favor the use of nontoxic, abundant elements in view of the limited availability of critical metals and sustainability. Cluster beam deposition offers a solvent- and, therefore, effluent-free physical synthesis method to achieve nanomaterials with tailored characteristics. However, the simultaneous control of size, shape, and elemental distribution within a single nanoparticle in a small-size regime (sub-10 nm) is still a major challenge, equally limiting physical and chemical approaches. Here, a single-step nanoparticle fabrication method based on magnetron-sputtering inert-gas condensation is reported, which relies on selective wetting of specific surface sites on precondensed iron nanocubes by gold atoms. Using a newly developed Fe-Au interatomic potential, the growth mechanism is decomposed into a multistage model implemented in a molecular dynamics simulation framework. The importance of growth kinetics is emphasized through differences between structures obtained either experimentally or computationally, and thermodynamically favorable configurations determined via global optimization techniques. These results provide a roadmap for engineering complex nanoalloys toward targeted applications.
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Affiliation(s)
- Jerome Vernieres
- Nanoparticles by Design UnitOkinawa Institute of Science and Technology (OIST) Graduate University1919‐1 TanchaOnna‐son904‐2151OkinawaJapan
| | - Stephan Steinhauer
- Nanoparticles by Design UnitOkinawa Institute of Science and Technology (OIST) Graduate University1919‐1 TanchaOnna‐son904‐2151OkinawaJapan
| | - Junlei Zhao
- Department of Physics and Helsinki Institute of PhysicsUniversity of HelsinkiP.O. Box 43FI‐00014HelsinkiFinland
| | - Panagiotis Grammatikopoulos
- Nanoparticles by Design UnitOkinawa Institute of Science and Technology (OIST) Graduate University1919‐1 TanchaOnna‐son904‐2151OkinawaJapan
| | - Riccardo Ferrando
- Dipartimento di FisicaUniversita di GenovaVia Dodecaneso 33I16146GenovaItaly
| | - Kai Nordlund
- Department of Physics and Helsinki Institute of PhysicsUniversity of HelsinkiP.O. Box 43FI‐00014HelsinkiFinland
| | - Flyura Djurabekova
- Department of Physics and Helsinki Institute of PhysicsUniversity of HelsinkiP.O. Box 43FI‐00014HelsinkiFinland
| | - Mukhles Sowwan
- Nanoparticles by Design UnitOkinawa Institute of Science and Technology (OIST) Graduate University1919‐1 TanchaOnna‐son904‐2151OkinawaJapan
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5
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Amram D, Schuh CA. Higher Temperatures Yield Smaller Grains in a Thermally Stable Phase-Transforming Nanocrystalline Alloy. PHYSICAL REVIEW LETTERS 2018; 121:145503. [PMID: 30339419 DOI: 10.1103/physrevlett.121.145503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Indexed: 06/08/2023]
Abstract
Grains in crystalline materials usually grow with increased thermal exposure. Classical phenomena such as recrystallization may lead to a purely temporary decrease in the grain size, while recent advances in alloy design can yield thermally stable nanocrystalline materials in which grain growth stagnates. But grains never shrink, since there is a lack of interface-generating mechanisms at high temperatures, which are required to decrease the grain size if such was the system's thermodynamic tendency. Here we sidestep this paradigm by designing a nanocrystalline alloy having an allotropic phase transformation-an interface-generating mechanism-such that only the high-temperature phase is stabilized against grain growth. We demonstrate that for an Fe-Au alloy cycled through the α↔γ transformation, the high-temperature phase (γ-Fe) has a stable fine grain size, smaller than its low-temperature counterpart (α-Fe). The result is an unusual material in which an increase in temperature leads to finer grains that are stable in size.
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Affiliation(s)
- Dor Amram
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - Christopher A Schuh
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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6
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Urusov AE, Petrakova AV, Zherdev AV, Dzantiev BB. Application of Magnetic Nanoparticles in Immunoassay. ACTA ACUST UNITED AC 2018. [DOI: 10.1134/s1995078017050135] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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7
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Kang JS, Sohn Y, Pradhan D, Leung KT. Bimetallic Au@M (M = Ag, Pd, Fe, and Cu) Nanoarchitectures Mediated by 1,4-Phenylene Diisocyanide Functionalization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2849-2855. [PMID: 29400974 DOI: 10.1021/acs.langmuir.7b02705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Hybridization with gold has attracted a lot of attention in many application areas such as energy, nanomedicine, and catalysts. Here, we demonstrate electrochemical hybridization of two different metals by using bare and 1,4-phenylene diisocyanide (PDI) functionalized gold nanoislands (GNIs) supported on a Si substrate. As pristine GNIs are not tightly locked on the Si surface, bimetallic Au@M (M = Ag, Pd, Fe, and Cu) core-shell type nanostructures are produced by an electric-field-induced clustering of GNIs and metal deposition. On the other hand, upon functionalization of GNIs by PDI, 3D island growth on the functionalized GNI template is observed as PDI acts as a protector against the electric-field-induced clustering. Depth-profiling X-ray photoelectron spectroscopy reveals no discernible difference in the interfacial electronic structures of hybrid metals prepared by using pristine and PDI-functionalized GNI templates. This work demonstrates a new approach to produce a secured template and to manipulate growth of hybrid nanoparticles on this template supported on a Si substrate by using electrodeposition and organic functionalization.
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Affiliation(s)
- Jung-Soo Kang
- WATLab and Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Youngku Sohn
- WATLab and Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Debabrata Pradhan
- WATLab and Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Kam Tong Leung
- WATLab and Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
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8
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Hughes RA, Menumerov E, Neretina S. When lithography meets self-assembly: a review of recent advances in the directed assembly of complex metal nanostructures on planar and textured surfaces. NANOTECHNOLOGY 2017; 28:282002. [PMID: 28590253 DOI: 10.1088/1361-6528/aa77ce] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
One of the foremost challenges in nanofabrication is the establishment of a processing science that integrates wafer-based materials, techniques, and devices with the extraordinary physicochemical properties accessible when materials are reduced to nanoscale dimensions. Such a merger would allow for exacting controls on nanostructure positioning, promote cooperative phenomenon between adjacent nanostructures and/or substrate materials, and allow for electrical contact to individual or groups of nanostructures. With neither self-assembly nor top-down lithographic processes being able to adequately meet this challenge, advancements have often relied on a hybrid strategy that utilizes lithographically-defined features to direct the assembly of nanostructures into organized patterns. While these so-called directed assembly techniques have proven viable, much of this effort has focused on the assembly of periodic arrays of spherical or near-spherical nanostructures comprised of a single element. Work directed toward the fabrication of more complex nanostructures, while still at a nascent stage, has nevertheless demonstrated the possibility of forming arrays of nanocubes, nanorods, nanoprisms, nanoshells, nanocages, nanoframes, core-shell structures, Janus structures, and various alloys on the substrate surface. In this topical review, we describe the progress made in the directed assembly of periodic arrays of these complex metal nanostructures on planar and textured substrates. The review is divided into three broad strategies reliant on: (i) the deterministic positioning of colloidal structures, (ii) the reorganization of deposited metal films at elevated temperatures, and (iii) liquid-phase chemistry practiced directly on the substrate surface. These strategies collectively utilize a broad range of techniques including capillary assembly, microcontact printing, chemical surface modulation, templated dewetting, nanoimprint lithography, and dip-pen nanolithography and employ a wide scope of chemical processes including redox reactions, alloying, dealloying, phase separation, galvanic replacement, preferential etching, template-mediated reactions, and facet-selective capping agents. Taken together, they highlight the diverse toolset available when fabricating organized surfaces of substrate-supported nanostructures.
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Affiliation(s)
- Robert A Hughes
- College of Engineering, University of Notre Dame, Notre Dame, IN 46556, United States of America
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9
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Sachdev S, Maugi R, Woolley J, Kirk C, Zhou Z, Christie SDR, Platt M. Synthesis of Gold Nanoparticles Using the Interface of an Emulsion Droplet. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5464-5472. [PMID: 28514172 DOI: 10.1021/acs.langmuir.7b00564] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A facile and rapid method for synthesizing single crystal gold spherical or platelet (nonspherical) particles is reported. The reaction takes place at the interface of two immiscible liquids where the reducing agent decamethylferrocene (DmFc) was initially added to hexane and gold chloride (AuCl4-) to an aqueous phase. The reaction is spontaneous at room temperature, leading to the creation of Au nanoparticles (AuNP). A flow focusing microfluidic chip was used to create emulsion droplets, allowing the same reaction to take place within a series of microreactors. The technique allows the number of droplets, their diameter, and even the concentration of reactants in both phases to be controlled. The size and shape of the AuNP are dependent upon the concentration of the reactants and the size of the droplets. By tuning the reaction parameters, the synthesized nanoparticles vary from nanometer to micrometer sized spheres or platelets. The surfactant used to stabilize the emulsion was also shown to influence the particle shape. Finally, the addition of other nanoparticles within the droplet allows for core@shell particles to be readily formed, and we believe this could be a versatile platform for the large scale production of core@shell particles.
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Affiliation(s)
| | | | | | - Caroline Kirk
- School of Chemistry, University of Edinburgh , David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
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10
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Wang Z, Zong S, Wu L, Zhu D, Cui Y. SERS-Activated Platforms for Immunoassay: Probes, Encoding Methods, and Applications. Chem Rev 2017; 117:7910-7963. [DOI: 10.1021/acs.chemrev.7b00027] [Citation(s) in RCA: 368] [Impact Index Per Article: 52.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhuyuan Wang
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
| | - Shenfei Zong
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
| | - Lei Wu
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
| | - Dan Zhu
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
| | - Yiping Cui
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
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11
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Kositski R, Kovalenko O, Lee SW, Greer JR, Rabkin E, Mordehai D. Cross-Split of Dislocations: An Athermal and Rapid Plasticity Mechanism. Sci Rep 2016; 6:25966. [PMID: 27185327 PMCID: PMC4869067 DOI: 10.1038/srep25966] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 04/25/2016] [Indexed: 11/09/2022] Open
Abstract
The pathways by which dislocations, line defects within the lattice structure, overcome microstructural obstacles represent a key aspect in understanding the main mechanisms that control mechanical properties of ductile crystalline materials. While edge dislocations were believed to change their glide plane only by a slow, non-conservative, thermally activated motion, we suggest the existence of a rapid conservative athermal mechanism, by which the arrested edge dislocations split into two other edge dislocations that glide on two different crystallographic planes. This discovered mechanism, for which we coined a term “cross-split of edge dislocations”, is a unique and collective phenomenon, which is triggered by an interaction with another same-sign pre-existing edge dislocation. This mechanism is demonstrated for faceted α-Fe nanoparticles under compression, in which we propose that cross-split of arrested edge dislocations is resulting in a strain burst. The cross-split mechanism provides an efficient pathway for edge dislocations to overcome planar obstacles.
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Affiliation(s)
- Roman Kositski
- Department of Mechanical Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel
| | - Oleg Kovalenko
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel
| | - Seok-Woo Lee
- Department of Materials Science and Engineering &Institute of Materials Science, University of Connecticut, CT, United States
| | - Julia R Greer
- Division of Engineering and Applied Science, California Institute of Technology Pasadena, CA 91125, United States
| | - Eugen Rabkin
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel
| | - Dan Mordehai
- Department of Mechanical Engineering, Technion - Israel Institute of Technology, 32000, Haifa, Israel
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12
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Solvent-surface interactions control the phase structure in laser-generated iron-gold core-shell nanoparticles. Sci Rep 2016; 6:23352. [PMID: 27004738 PMCID: PMC4804215 DOI: 10.1038/srep23352] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 03/04/2016] [Indexed: 12/26/2022] Open
Abstract
This work highlights a strategy for the one-step synthesis of FeAu nanoparticles by the pulsed laser ablation of alloy targets in the presence of different solvents. This method allows particle generation without the use of additional chemicals; hence, solvent-metal interactions could be studied without cross effects from organic surface ligands. A detailed analysis of generated particles via transmission electron microscopy in combination with EDX elemental mapping could conclusively verify that the nature of the used solvent governs the internal phase structure of the formed nanoparticles. In the presence of acetone or methyl methacrylate, a gold shell covering a non-oxidized iron core was formed, whereas in aqueous media, an Au core with an Fe3O4 shell was generated. This core-shell morphology was the predominant species found in >90% of the examined nanoparticles. These findings indicate that fundamental chemical interactions between the nanoparticle surface and the solvent significantly contribute to phase segregation and elemental distribution in FeAu nanoparticles. A consecutive analysis of resulting Fe@Au core-shell nanoparticles revealed outstanding oxidation resistance and fair magnetic and optical properties. In particular, the combination of these features with high stability magnetism and plasmonics may create new opportunities for this hybrid material in imaging applications.
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13
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Gawande MB, Goswami A, Asefa T, Guo H, Biradar AV, Peng DL, Zboril R, Varma RS. Core-shell nanoparticles: synthesis and applications in catalysis and electrocatalysis. Chem Soc Rev 2016; 44:7540-90. [PMID: 26288197 DOI: 10.1039/c5cs00343a] [Citation(s) in RCA: 462] [Impact Index Per Article: 57.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Core-shell nanoparticles (CSNs) are a class of nanostructured materials that have recently received increased attention owing to their interesting properties and broad range of applications in catalysis, biology, materials chemistry and sensors. By rationally tuning the cores as well as the shells of such materials, a range of core-shell nanoparticles can be produced with tailorable properties that can play important roles in various catalytic processes and offer sustainable solutions to current energy problems. Various synthetic methods for preparing different classes of CSNs, including the Stöber method, solvothermal method, one-pot synthetic method involving surfactants, etc., are briefly mentioned here. The roles of various classes of CSNs are exemplified for both catalytic and electrocatalytic applications, including oxidation, reduction, coupling reactions, etc.
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Affiliation(s)
- Manoj B Gawande
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Department of Physical Chemistry, Palacky University, Šlechtitelů 11, 783 71, Olomouc, Czech Republic.
| | - Anandarup Goswami
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Department of Physical Chemistry, Palacky University, Šlechtitelů 11, 783 71, Olomouc, Czech Republic. and Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, USA
| | - Tewodros Asefa
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, USA and Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, New Jersey 08854, USA
| | - Huizhang Guo
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Ankush V Biradar
- Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Dong-Liang Peng
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Department of Physical Chemistry, Palacky University, Šlechtitelů 11, 783 71, Olomouc, Czech Republic.
| | - Rajender S Varma
- Sustainable Technology Division, National Risk Management Research Laboratory, US Environmental Protection Agency, 26 West Martin Luther King Drive, MS 443, Cincinnati, Ohio 45268, USA.
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14
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Synthesis of bi-phase dispersible core-shell FeAu@ZnO magneto-opto-fluorescent nanoparticles. Sci Rep 2015; 5:16384. [PMID: 26548369 PMCID: PMC4637858 DOI: 10.1038/srep16384] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 10/14/2015] [Indexed: 02/04/2023] Open
Abstract
Bi-phase dispersible core-shell FeAu@ZnO magneto-opto-fluorescent nanoparticles were synthesized by a modified nanoemulsion process using poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEO-PPO-PEO) as the surfactant. The morphology and crystal structure of the nanoparticles were studied by TEM/HRTEM and XRD. The nanoparticles manifest soft ferromagnetic and/or near superparamagnetic behavior with a small coercivity of ~19 Oe at room temperature. The corresponding magnetic hysteresis curves were elucidated by the modified Langevin equation. The FTIR study confirms the PEO-PPO-PEO molecules on the surface of the nanoparticles. The UV-vis and PL results reveal the well-behaved absorption bands including surface plasmon resonance and multiple visible fingerprint photoluminescent emissions of the nanoparticles dispersed in both hydrophilic and hydrophobic solvents. Moreover, the processes of solvent dispersion-collection of the nanoparticles were demonstrated for application readiness of such core-shell nanostructures.
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15
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Langlois C, Benzo P, Arenal R, Benoit M, Nicolai J, Combe N, Ponchet A, Casanove MJ. Fully Crystalline Faceted Fe-Au Core-Shell Nanoparticles. NANO LETTERS 2015; 15:5075-5080. [PMID: 26146846 DOI: 10.1021/acs.nanolett.5b02273] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fe-Au core-shell nanoparticles displaying an original polyhedral morphology have been successfully synthesized through a physical route. Analyses using transmission electron microscopy show that the Au shell forms truncated pyramids epitaxially grown on the (100) facets of the iron cubic core. The evolution of the elastic energy and strain field in the nanoparticles as a function of their geometry and composition is calculated using the finite-element method. The stability of the remarkable centered core-shell morphology experimentally observed is attributed to the weak elastic energy resulting from the low misfit at the Fe/Au (100) interface compared to the surface energy contribution.
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Affiliation(s)
- C Langlois
- †CEMES, CNRS UPR 8011 and Université de Toulouse, 29 rue Jeanne Marvig, F-31055 Toulouse, France
| | - P Benzo
- †CEMES, CNRS UPR 8011 and Université de Toulouse, 29 rue Jeanne Marvig, F-31055 Toulouse, France
| | - R Arenal
- ‡L.M.A., Instituto de Nanociencia de Aragon, Universidad de Zaragoza, C/Mariano Esquillor s/n, 50018 Zaragoza, Spain
- §Fundacion ARAID, 50018 Zaragoza, Spain
| | - M Benoit
- †CEMES, CNRS UPR 8011 and Université de Toulouse, 29 rue Jeanne Marvig, F-31055 Toulouse, France
| | - J Nicolai
- †CEMES, CNRS UPR 8011 and Université de Toulouse, 29 rue Jeanne Marvig, F-31055 Toulouse, France
| | - N Combe
- †CEMES, CNRS UPR 8011 and Université de Toulouse, 29 rue Jeanne Marvig, F-31055 Toulouse, France
| | - A Ponchet
- †CEMES, CNRS UPR 8011 and Université de Toulouse, 29 rue Jeanne Marvig, F-31055 Toulouse, France
| | - M J Casanove
- †CEMES, CNRS UPR 8011 and Université de Toulouse, 29 rue Jeanne Marvig, F-31055 Toulouse, France
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