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Zheng Y, Cheng L, Su J, Chen C, Zhu X, Li H. Electron beam-induced athermal nanowelding of crossing SiOx amorphous nanowires. RSC Adv 2022; 12:6018-6024. [PMID: 35424549 PMCID: PMC8981572 DOI: 10.1039/d1ra08176d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/05/2022] [Indexed: 11/21/2022] Open
Abstract
Athermal welding of crossing SiOx nanowires under e-beam irradiation is in situ observed by TEM. A relevant simulation considering nanocurvature effect and athermal activation effect gives the corresponding 3D structural evolution and the velocity field of atom migration.
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Affiliation(s)
- Yuchen Zheng
- Department of Physics, Xiamen University, Xiamen 361005, People's Republic of China
- China–Australia Joint Laboratory for Functional Nanomaterials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Liang Cheng
- Department of Physics, Xiamen University, Xiamen 361005, People's Republic of China
- China–Australia Joint Laboratory for Functional Nanomaterials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Jiangbin Su
- Department of Physics, Xiamen University, Xiamen 361005, People's Republic of China
- China–Australia Joint Laboratory for Functional Nanomaterials, Xiamen University, Xiamen 361005, People's Republic of China
- Experiment Center of Electronic Science and Technology, School of Microelectronics Science and Control Engineering, Changzhou University, Changzhou 213164, People's Republic of China
| | - Chuncai Chen
- Department of Physics, Xiamen University, Xiamen 361005, People's Republic of China
- China–Australia Joint Laboratory for Functional Nanomaterials, Xiamen University, Xiamen 361005, People's Republic of China
- Department of Physics, College of Civil Engineering, MinNan University of Science and Technology, Shishi 362700, People's Republic of China
| | - Xianfang Zhu
- Department of Physics, Xiamen University, Xiamen 361005, People's Republic of China
- China–Australia Joint Laboratory for Functional Nanomaterials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Hang Li
- State Key Lab of Physical Chemistry of Solid Surfaces, Collaborative Innovation Centre of Chemistry for Energy Materials, State-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, Engineering Research Center of Electrochemical Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People's Republic of China
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2
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Affiliation(s)
- Falk Muench
- Department of Materials and Earth Sciences Technical University of Darmstadt Alarich-Weiss-Straße 2 64287 Darmstadt Germany
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3
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Vidu R, Matei E, Predescu AM, Alhalaili B, Pantilimon C, Tarcea C, Predescu C. Removal of Heavy Metals from Wastewaters: A Challenge from Current Treatment Methods to Nanotechnology Applications. TOXICS 2020; 8:E101. [PMID: 33182698 PMCID: PMC7711730 DOI: 10.3390/toxics8040101] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/05/2020] [Accepted: 11/06/2020] [Indexed: 12/07/2022]
Abstract
Removing heavy metals from wastewaters is a challenging process that requires constant attention and monitoring, as heavy metals are major wastewater pollutants that are not biodegradable and thus accumulate in the ecosystem. In addition, the persistent nature, toxicity and accumulation of heavy metal ions in the human body have become the driving force for searching new and more efficient water treatment technologies to reduce the concentration of heavy metal in waters. Because the conventional techniques will not be able to keep up with the growing demand for lower heavy metals levels in drinking water and wastewaters, it is becoming increasingly challenging to implement technologically advanced alternative water treatments. Nanotechnology offers a number of advantages compared to other methods. Nanomaterials are more efficient in terms of cost and volume, and many process mechanisms are better and faster at nanoscale. Although nanomaterials have already proved themselves in water technology, there are specific challenges related to their stability, toxicity and recovery, which led to innovations to counteract them. Taking into account the multidisciplinary research of water treatment for the removal of heavy metals, the present review provides an updated report on the main technologies and materials used for the removal of heavy metals with an emphasis on nanoscale materials and processes involved in the heavy metals removal and detection.
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Affiliation(s)
- Ruxandra Vidu
- Faculty of Materials Science and Engineering, University Politehnica of Bucharest,060042 Bucharest, Romania or (R.V.); (C.P.); (C.T.); (C.P.)
- Department of Electrical & Computer Engineering, University of California, Davis, CA 95616, USA
| | - Ecaterina Matei
- Faculty of Materials Science and Engineering, University Politehnica of Bucharest,060042 Bucharest, Romania or (R.V.); (C.P.); (C.T.); (C.P.)
| | - Andra Mihaela Predescu
- Faculty of Materials Science and Engineering, University Politehnica of Bucharest,060042 Bucharest, Romania or (R.V.); (C.P.); (C.T.); (C.P.)
| | - Badriyah Alhalaili
- Nanotechnology and Advanced Materials Program, Kuwait Institute for Scientific Research, Kuwait City 13109, Kuwait;
| | - Cristian Pantilimon
- Faculty of Materials Science and Engineering, University Politehnica of Bucharest,060042 Bucharest, Romania or (R.V.); (C.P.); (C.T.); (C.P.)
| | - Claudia Tarcea
- Faculty of Materials Science and Engineering, University Politehnica of Bucharest,060042 Bucharest, Romania or (R.V.); (C.P.); (C.T.); (C.P.)
| | - Cristian Predescu
- Faculty of Materials Science and Engineering, University Politehnica of Bucharest,060042 Bucharest, Romania or (R.V.); (C.P.); (C.T.); (C.P.)
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Huang Y, Tian Y, Hang C, Liu Y, Wang S, Qi M, Zhang H, Zhao J. Self-Limited Nanosoldering of Silver Nanowires for High-Performance Flexible Transparent Heaters. ACS APPLIED MATERIALS & INTERFACES 2019; 11:21850-21858. [PMID: 31132241 DOI: 10.1021/acsami.9b06029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Silver nanowires (Ag NWs) are key materials to fabricate next-generation flexible transparent electrodes (FTEs). Currently, the applications of Ag NWs are impeded by the large wire-wire contact resistance. Herein, a self-limited nanosoldering method is proposed to reduce the contact resistance by epitaxially depositing silver nanosolders at the Ag NW junctions, which have a negligible effect on the optical transparency, while decreasing the sheet resistance of the Ag NW film from 18.6 to 7.7 Ω/sq at a transmittance of 90%. In addition, the deposited nanosolders at the junctions remarkably improve the electrical and mechanical stabilities of the Ag NW electrodes. Notably, this simple nanosoldering process can be rapidly conducted under room temperature and ambient conditions and is free of any technical support or specific equipment. This technique is easily applied to the nanosoldering of 210 × 297 mm FTEs. Based on these FTEs, a high-performance flexible transparent heater with a sheet resistance 3.7 Ω/sq at a transmittance of 82.5% is constructed. Because of the high heating rate (4.8 °C/s), the heater can produce uniform heating (145 °C) at a short response time (30 s) and low input voltage (6 V).
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Abstract
Combining 1D metal nanotubes and nanowires into cross-linked 2D and 3D architectures represents an attractive design strategy for creating tailored unsupported catalysts. Such materials complement the functionality and high surface area of the nanoscale building blocks with the stability, continuous conduction pathways, efficient mass transfer, and convenient handling of a free-standing, interconnected, open-porous superstructure. This review summarizes synthetic approaches toward metal nano-networks of varying dimensionality, including the assembly of colloidal 1D nanostructures, the buildup of nanofibrous networks by electrospinning, and direct, template-assisted deposition methods. It is outlined how the nanostructure, porosity, network architecture, and composition of such materials can be tuned by the fabrication conditions and additional processing steps. Finally, it is shown how these synthetic tools can be employed for designing and optimizing self-supported metal nano-networks for application in electrocatalysis and related fields.
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Lee HJ, Oh S, Cho KY, Jeong WL, Lee DS, Park SJ. Spontaneous and Selective Nanowelding of Silver Nanowires by Electrochemical Ostwald Ripening and High Electrostatic Potential at the Junctions for High-Performance Stretchable Transparent Electrodes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:14124-14131. [PMID: 29620842 DOI: 10.1021/acsami.8b00837] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Metal nanowires have been gaining increasing attention as the most promising stretchable transparent electrodes for emerging field of stretchable optoelectronic devices. Nanowelding technology is a major challenge in the fabrication of metal nanowire networks because the optoelectronic performances of metal nanowire networks are mostly limited by the high junction resistance between nanowires. We demonstrate the spontaneous and selective welding of Ag nanowires (AgNWs) by Ag solders via an electrochemical Ostwald ripening process and high electrostatic potential at the junctions of AgNWs. The AgNWs were welded by depositing Ag nanoparticles (AgNPs) on the conducting substrate and then exposing them to water at room temperature. The AgNPs were spontaneously dissolved in water to form Ag+ ions, which were then reduced to single-crystal Ag solders selectively at the junctions of the AgNWs. Hence, the welded AgNWs showed higher optoelectronic and stretchable performance compared to that of as-formed AgNWs. These results indicate that electrochemical Ostwald ripening-based welding can be used as a promising method for high-performance metal nanowire electrodes in various next-generation devices such as stretchable solar cells, stretchable displays, organic light-emitting diodes, and skin sensors.
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Liu L, Li HY, Ye D, Yu Y, Liu L, Wu Y. Nanowelding and patterning of silver nanowires via mask-free atmospheric cold plasma-jet scanning. NANOTECHNOLOGY 2017; 28:225301. [PMID: 28422046 DOI: 10.1088/1361-6528/aa6dd6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Silver nanowire (AgNW) thin film is a promising candidate to replace traditional indium tin oxide in optoelectronics applications. To date however, the widespread application of AgNW thin film is limited by the weak point contacts between individual AgNWs and the lack of facile patterning techniques. Here, we demonstrate a novel and facile method to not only nanoweld AgNW junctions but also pattern AgNW thin films via mask-free cold plasma-jet scanning in ambient conditions. After the plasma-jet nanowelding treatment, the morphology of AgNWs change substantially and the junctions are welded together. The nanowelded AgNWs-based thin film shows enhanced electrical and mechanical properties. On the other hand, after the plasma-jet patterning treatment, the AgNWs are etched and transformed into separated large particles. Different kinds of patterns are produced via this patterning technique. At last, a simple light emitting diode circuit is fabricated to demonstrate the suitability of the nanowelded and patterned AgNW electrodes for flexible electronic devices.
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Affiliation(s)
- Lang Liu
- School of Materials Science and Engineering, Huazhong University of Science and Technology, 430074 Wuhan, People's Republic of China
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Hwang J, Shim Y, Yoon SM, Lee SH, Park SH. Influence of polyvinylpyrrolidone (PVP) capping layer on silver nanowire networks: theoretical and experimental studies. RSC Adv 2016. [DOI: 10.1039/c5ra28003f] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
By adjusting the polyvinylpyrrolidone (PVP) capping layer thickness on silver nanowire networks, improved electrical and optical properties were obtained, which was confirmed both experimentally and theoretically (Molecular dynamics and Monte Carlo simulations).
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Affiliation(s)
- Jinyoung Hwang
- Samsung Advanced Institute of Technology
- Suwon
- Republic of Korea
| | - Youngseon Shim
- Samsung Advanced Institute of Technology
- Suwon
- Republic of Korea
| | - Seon-Mi Yoon
- Samsung Advanced Institute of Technology
- Suwon
- Republic of Korea
| | - Sang Hyun Lee
- Department of Electrical Engineering
- Sejong University
- Gwangjin-gu
- Republic of Korea
| | - Sung-Hoon Park
- Department of Mechanical Engineering
- Soongsil University
- Dongjak-gu
- Republic of Korea
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Wang J, Jiu J, Sugahara T, Nagao S, Nogi M, Koga H, He P, Suganuma K, Uchida H. Highly Reliable Silver Nanowire Transparent Electrode Employing Selectively Patterned Barrier Shaped by Self-Masked Photolithography. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23297-23304. [PMID: 26419188 DOI: 10.1021/acsami.5b07619] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The transparent electrode based on silver nanowire (AgNW) networks is one promising alternative of indium tin oxide film in particular for advanced flexible and printable electronics. However, the widespread application of AgNW electrode is hindered by its poor long-term reliability. Although the reliability can be improved by applying traditional overcoating layer or the core-shell structure, the transmittance or conductivity is inevitably undermined. In this paper, a novel patterned barrier of photoresist in situ assembled on the nanowire surface realized the reliability enhancement by simply employing AgNWs themselves as the mask in the photolithography process. The patterned barrier selectively covered the nanowires, while keeping the high transmittance and conductivity unchanged and improving the adhesion of AgNW networks on substrate. After 720 h storage in 85 °C/85% relative humidity (RH) environment, the resistance of electrode with patterned barrier only increased by 0.72 times. This study proposes a new way, i.e., the in situ patterned barrier containing light-sensitive substance, to selectively protect AgNW networks, which can be expanded to various metallic networks including nanowires, nanorods, nanocables, electrospun nanofibers, and so on.
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Affiliation(s)
- Jun Wang
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology , Harbin 150001, China
- The Institute of Scientific and Industrial Research, Osaka University , Ibaraki, Osaka 567-0047, Japan
| | - Jinting Jiu
- The Institute of Scientific and Industrial Research, Osaka University , Ibaraki, Osaka 567-0047, Japan
| | - Tohru Sugahara
- The Institute of Scientific and Industrial Research, Osaka University , Ibaraki, Osaka 567-0047, Japan
| | - Shijo Nagao
- The Institute of Scientific and Industrial Research, Osaka University , Ibaraki, Osaka 567-0047, Japan
| | - Masaya Nogi
- The Institute of Scientific and Industrial Research, Osaka University , Ibaraki, Osaka 567-0047, Japan
| | - Hirotaka Koga
- The Institute of Scientific and Industrial Research, Osaka University , Ibaraki, Osaka 567-0047, Japan
| | - Peng He
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology , Harbin 150001, China
| | - Katsuaki Suganuma
- The Institute of Scientific and Industrial Research, Osaka University , Ibaraki, Osaka 567-0047, Japan
| | - Hiroshi Uchida
- Institute for Polymers and Chemicals Business Development Center, Showa Denko K.K. , Ichihara, Chiba 290-0067, Japan
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Peng P, Hu A, Gerlich AP, Zou G, Liu L, Zhou YN. Joining of Silver Nanomaterials at Low Temperatures: Processes, Properties, and Applications. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12597-12618. [PMID: 26005792 DOI: 10.1021/acsami.5b02134] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A review is provided, which first considers low-temperature diffusion bonding with silver nanomaterials as filler materials via thermal sintering for microelectronic applications, and then other recent innovations in low-temperature joining are discussed. The theoretical background and transition of applications from micro to nanoparticle (NP) pastes based on joining using silver filler materials and nanojoining mechanisms are elucidated. The mechanical and electrical properties of sintered silver nanomaterial joints at low temperatures are discussed in terms of the key influencing factors, such as porosity and coverage of substrates, parameters for the sintering processes, and the size and shape of nanomaterials. Further, the use of sintered silver nanomaterials for printable electronics and as robust surface-enhanced Raman spectroscopy substrates by exploiting their optical properties is also considered. Other low-temperature nanojoining strategies such as optical welding of silver nanowires (NWs) through a plasmonic heating effect by visible light irradiation, ultrafast laser nanojoining, and ion-activated joining of silver NPs using ionic solvents are also summarized. In addition, pressure-driven joining of silver NWs with large plastic deformation and self-joining of gold or silver NWs via oriented attachment of clean and activated surfaces are summarized. Finally, at the end of this review, the future outlook for joining applications with silver nanomaterials is explored.
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Affiliation(s)
| | - Anming Hu
- §Mechanical, Aerospace and Biomedical Engineering Department, University of Tennessee, 1512 Middle Drive, Knoxville, Tennessee 37996-2210, United States
| | | | - Guisheng Zou
- ∥Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Lei Liu
- ∥Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Y Norman Zhou
- ∥Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
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Weiß N, Müller-Meskamp L, Selzer F, Bormann L, Eychmüller A, Leo K, Gaponik N. Humidity assisted annealing technique for transparent conductive silver nanowire networks. RSC Adv 2015. [DOI: 10.1039/c5ra01303h] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The capacity of polyvinylpyrrolidone (PVP) to adsorb water vapor was used to decrease the sheet resistance of silver nanowires (AgNW) based electrodes.
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Affiliation(s)
- Nelli Weiß
- Physical Chemistry
- TU Dresden
- Dresden
- Germany
| | | | - Franz Selzer
- Institute for Applied Photophysics
- TU Dresden
- Dresden
- Germany
| | - Ludwig Bormann
- Institute for Applied Photophysics
- TU Dresden
- Dresden
- Germany
| | | | - Karl Leo
- Institute for Applied Photophysics
- TU Dresden
- Dresden
- Germany
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