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Chen F, Yang Z, Li JN, Jia F, Wang F, Zhao D, Peng RW, Wang M. Formation of magnetic nanowire arrays by cooperative lateral growth. SCIENCE ADVANCES 2022; 8:eabk0180. [PMID: 35089795 PMCID: PMC8797794 DOI: 10.1126/sciadv.abk0180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 12/07/2021] [Indexed: 06/14/2023]
Abstract
Nanowires typically grow along their longitudinal axis, and the long-range order among wires sustains only when a template exists. Here, we report an unprecedented electrochemical growth of ordered metallic nanowire arrays from an ultrathin electrolyte layer, which is achieved by solidifying the electrolyte solution below the freezing temperature. The thickness of the electrodeposit is instantaneously tunable by the applied electric pulses, leading to parallel ridges on webbed film without using any template. An array of metallic nanowires with desired separation and width determined by the applied pulses is formed on the substrate with arbitrary surface patterns by etching away the webbed film thereafter. This work demonstrates a previously unrecognized fabrication strategy that bridges the gap of top-down lithography and bottom-up self-organization in making ordered metallic nanowire arrays over a large area with low cost.
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Affiliation(s)
- Fei Chen
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Zihao Yang
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Jing-Ning Li
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Fei Jia
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Fan Wang
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Di Zhao
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Ru-Wen Peng
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Mu Wang
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
- American Physical Society, Ridge, NY 11961, USA
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2
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Jing H, Peng R, Ma RM, He J, Zhou Y, Yang Z, Li CY, Liu Y, Guo X, Zhu Y, Wang D, Su J, Sun C, Bao W, Wang M. Flexible Ultrathin Single-Crystalline Perovskite Photodetector. NANO LETTERS 2020; 20:7144-7151. [PMID: 32941049 DOI: 10.1021/acs.nanolett.0c02468] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Flexible optoelectronic devices attract considerable attention due to their prominent role in creating novel wearable apparatus for bionics, robotics, health care, and so forth. Although bulk single-crystalline perovskite-based materials are well-recognized for the high photoelectric conversion efficiency than the polycrystalline ones, their stiff and brittle nature unfortunately prohibits their application for flexible devices. Here, we introduce ultrathin single-crystalline perovskite film as the active layer and demonstrate a high-performance flexible photodetector with prevailing bending reliability. With a much-reduced thickness of 20 nm, the photodetector made of this ultrathin film can achieve a significantly increased responsivity as 5600A/W, 2 orders of magnitude higher than that of recently reported flexible perovskite photodetectors. The demonstrated 0.2 MHz 3 dB bandwidth further paves the way for high-speed photodetection. Notably, all its optoelectronic characteristics resume after being bent over thousands of times. These results manifest the great potential of single-crystalline perovskite ultrathin films for developing wearable and flexible optoelectronic devices.
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Affiliation(s)
- Hao Jing
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Ruwen Peng
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Ren-Min Ma
- State Key Lab for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
| | - Jie He
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Yi Zhou
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Zhenqian Yang
- State Key Lab for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
| | - Cheng-Yao Li
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Yu Liu
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Xiaojiao Guo
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Yingying Zhu
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Di Wang
- Institute of Functional Crystals, Tianjin University of Technology, Tianjin 300384, China
| | - Jing Su
- School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Cheng Sun
- Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Wenzhong Bao
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Mu Wang
- National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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3
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Pinto MR, Costa GF, Machado EG, Nagao R. Self‐Organization in Electrochemical Synthesis as a Methodology towards New Materials. ChemElectroChem 2020. [DOI: 10.1002/celc.202000065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maria R. Pinto
- Institute of ChemistryUniversity of Campinas CEP 13083-970 Campinas, SP Brazil
| | - Gabriel F. Costa
- Institute of ChemistryUniversity of Campinas CEP 13083-970 Campinas, SP Brazil
| | - Eduardo G. Machado
- Institute of ChemistryUniversity of Campinas CEP 13083-970 Campinas, SP Brazil
- Center for Innovation on New EnergiesUniversity of Campinas CEP 13083-841 Campinas, SP Brazil
| | - Raphael Nagao
- Institute of ChemistryUniversity of Campinas CEP 13083-970 Campinas, SP Brazil
- Center for Innovation on New EnergiesUniversity of Campinas CEP 13083-841 Campinas, SP Brazil
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4
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Gao J, Wu X, Li Q, Du S, Huang F, Liang L, Zhang H, Zhuge F, Cao H, Song Y. Template-Free Growth of Well-Ordered Silver Nano Forest/Ceramic Metamaterial Films with Tunable Optical Responses. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605324. [PMID: 28218442 DOI: 10.1002/adma.201605324] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 01/14/2017] [Indexed: 06/06/2023]
Abstract
Currently, the limitations of conventional methods for fabricating metamaterials composed of well-aligned nanoscale inclusions either lack the necessary freedom to tune the structural geometry or are difficult for large-area synthesis. In this Communication, the authors propose a fabrication route to create well-ordered silver nano forest/ceramic composite single-layer or multi-layer vertically stacked structures, as a distinctive approach to make large-area nanoscale metamaterials. To take advantage of direct growth, the authors fabricate single-layer nanocomposite films with a well-defined sub-5 nm interwire gap and an average nanowire diameter of ≈3 nm. Further, artificially constructed multilayer metamaterial films are easily fabricated by vertical integration of different single-layer metamaterial films. Based upon the thermodynamics as well as thin film growth dynamics theory, the growth mechanism is presented to elucidate the formation of such structure. Intriguing steady and transient optical properties in these assemblies are demonstrated, owing to their nanoscale structural anisotropy. The studies suggest that the self-organized nanocomposites provide an extensible material platform to manipulate optical response in the region of sub-5 nm scale.
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Affiliation(s)
- Junhua Gao
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Xingzhi Wu
- Department of Physics, Harbin Institute of Technology, Harbin, 150001, China
| | - Qiuwu Li
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Shiyu Du
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Feng Huang
- Key Laboratory of Marine Materials and Protection Technologies of Zhejiang Province Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Lingyan Liang
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Hongliang Zhang
- Key Laboratory of Graphene Technologies and Applications of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Fei Zhuge
- Key Laboratory of Graphene Technologies and Applications of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Hongtao Cao
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Yinglin Song
- Department of Physics, Harbin Institute of Technology, Harbin, 150001, China
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5
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Chen F, Li J, Yu F, Zhao D, Wang F, Chen Y, Peng RW, Wang M. Construction of 3D Metallic Nanostructures on an Arbitrarily Shaped Substrate. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:7193-7199. [PMID: 27294561 DOI: 10.1002/adma.201602049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 05/20/2016] [Indexed: 06/06/2023]
Abstract
Constructing conductive/magnetic nanowire arrays with 3D features by electrodeposition remains challenging. An unprecedented fabrication approach that allows to construct metallic (cobalt) nanowires on an arbitrarily shaped surface is reported. The spatial separation of nanowires varies from 70 to 3000 nm and the line width changes from 50 to 250 nm depending on growth conditions.
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Affiliation(s)
- Fei Chen
- National Laboratory of Solid State Microstructures and School of Physics, and Collaborative InnovationCenter of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Jingning Li
- National Laboratory of Solid State Microstructures and School of Physics, and Collaborative InnovationCenter of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Fangfang Yu
- National Laboratory of Solid State Microstructures and School of Physics, and Collaborative InnovationCenter of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Di Zhao
- National Laboratory of Solid State Microstructures and School of Physics, and Collaborative InnovationCenter of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Fan Wang
- National Laboratory of Solid State Microstructures and School of Physics, and Collaborative InnovationCenter of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Yanbin Chen
- National Laboratory of Solid State Microstructures and School of Physics, and Collaborative InnovationCenter of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Ru-Wen Peng
- National Laboratory of Solid State Microstructures and School of Physics, and Collaborative InnovationCenter of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Mu Wang
- National Laboratory of Solid State Microstructures and School of Physics, and Collaborative InnovationCenter of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
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6
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Ma J, Wang Y, Liu W, He Y, Sun Q, Zuo-Jiang S, Chen K. Hundreds of milligrams of Cr(vi) adsorbed on each gram of Cu2O@Cu fractal structures: kinetics, equilibrium, and thermodynamics. CrystEngComm 2015. [DOI: 10.1039/c5ce01139f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Xiao CH, Xiao BX, Wang YD, Zhang J, Wang SM, Wang P, Yang TY, Zhao R, Yu H, Li ZF, Zhang MZ. Synthesis of ZnO nanosheets decorated with Au nanoparticles and its application in recyclable 3D surface-enhanced Raman scattering substrates. RSC Adv 2015. [DOI: 10.1039/c4ra15193c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
ZnO nanosheets decorated with Au nanoparticles by galvanic reduction method and its application in recyclable 3D surface-enhanced Raman scattering substrates.
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Affiliation(s)
- Chuan-hai Xiao
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Bing-xin Xiao
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Yu-da Wang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Jian Zhang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Shuang-ming Wang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Pan Wang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Tian-ye Yang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Rui Zhao
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Hai Yu
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Zhi-fang Li
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
| | - Ming-zhe Zhang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun
- People's Republic of China
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8
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Zhong S, Koch T, Walheim S, Rösner H, Nold E, Kobler A, Scherer T, Wang D, Kübel C, Wang M, Hahn H, Schimmel T. Self-organization of mesoscopic silver wires by electrochemical deposition. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:1285-1290. [PMID: 25247112 PMCID: PMC4168863 DOI: 10.3762/bjnano.5.142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 06/25/2014] [Indexed: 06/03/2023]
Abstract
Long, straight mesoscale silver wires have been fabricated from AgNO3 electrolyte via electrodeposition without the help of templates, additives, and surfactants. Although the wire growth speed is very fast due to growth under non-equilibrium conditions, the wire morphology is regular and uniform in diameter. Structural studies reveal that the wires are single-crystalline, with the [112] direction as the growth direction. A possible growth mechanism is suggested. Auger depth profile measurements show that the wires are stable against oxidation under ambient conditions. This unique system provides a convenient way for the study of self-organization in electrochemical environments as well as for the fabrication of highly-ordered, single-crystalline metal nanowires.
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Affiliation(s)
- Sheng Zhong
- Institute of Applied Physics and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
| | - Thomas Koch
- Institute of Applied Physics and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
| | - Stefan Walheim
- Institute of Applied Physics and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
| | - Harald Rösner
- Institute of Materials Physics, University of Muenster, 48149 Muenster, Germany
| | - Eberhard Nold
- Institute for Materials Research I (IMF I) Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
| | - Aaron Kobler
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
- Joint Research Laboratory Nanomaterials (KIT and TUD), Technische Universität Darmstadt (TUD), Petersenstr. 32, 64287 Darmstadt, Germany
| | - Torsten Scherer
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
- Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Di Wang
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
- Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Christian Kübel
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
- Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Mu Wang
- National Laboratory of Solid-State Microstructures, Nanjing University, Nanjing 21009, China
| | - Horst Hahn
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
- Joint Research Laboratory Nanomaterials (KIT and TUD), Technische Universität Darmstadt (TUD), Petersenstr. 32, 64287 Darmstadt, Germany
- Helmholtz Institute Ulm Electrochemical Energy Storage, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Herbert Gleiter Institute of Nanoscience, NUST, Nanjing 21009, China
| | - Thomas Schimmel
- Institute of Applied Physics and Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
- Herbert Gleiter Institute of Nanoscience, NUST, Nanjing 21009, China
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9
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Olson IC, Blonsky AZ, Tamura N, Kunz M, Pokroy B, Romao CP, White MA, Gilbert PUPA. Crystal nucleation and near-epitaxial growth in nacre. J Struct Biol 2013; 184:454-63. [PMID: 24121160 DOI: 10.1016/j.jsb.2013.10.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 10/03/2013] [Accepted: 10/05/2013] [Indexed: 11/16/2022]
Abstract
Nacre is the iridescent inner lining of many mollusk shells, with a unique lamellar structure at the sub-micron scale, and remarkable resistance to fracture. Despite extensive studies, nacre formation mechanisms remain incompletely understood. Here we present 20-nm, 2°-resolution polarization-dependent imaging contrast (PIC) images of shells from 15 mollusk species, mapping nacre tablets and their orientation patterns. These data show where new crystal orientations appear and how similar orientations propagate as nacre grows. In all shells we found stacks of co-oriented aragonite (CaCO₃) tablets arranged into vertical columns or staggered diagonally. Near the nacre-prismatic (NP) boundary highly disordered spherulitic aragonite is nucleated. Overgrowing nacre tablet crystals are most frequently co-oriented with the underlying aragonite spherulites, or with another tablet. Away from the NP-boundary all tablets are nearly co-oriented in all species, with crystal lattice tilting, abrupt or gradual, always observed and always small (plus or minus 10°). Therefore aragonite crystal growth in nacre is near-epitaxial. Based on these data, we propose that there is one mineral bridge per tablet, and that "bridge tilting" may occur without fracturing the bridge, hence providing the seed from which the next tablet grows near-epitaxially.
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Affiliation(s)
- Ian C Olson
- Department of Physics, University of Wisconsin-Madison, 1150 University Avenue, Madison, WI 53706, USA
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10
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Wang S, Xiao C, Shi X, Cui G, Yao B, Wang P, Tian T, Zhang M. Electrodeposition and characterization of a bamboo-like ZnSe/Zn heterostructure ordered array. RSC Adv 2013. [DOI: 10.1039/c3ra41829d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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11
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Ding C, Tian C, Krupke R, Fang J. Growth of non-branching Ag nanowiresvia ion migrational-transport controlled 3D electrodeposition. CrystEngComm 2012. [DOI: 10.1039/c1ce05686g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Huang XP, Shi ZL, Wang M, Konoto M, Zhou HS, Ma GB, Wu D, Peng R, Ming NB. Formation of regular magnetic domains on spontaneously nanostructured cobalt filaments. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:2711-2716. [PMID: 20376821 DOI: 10.1002/adma.200904066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- Xiao-Ping Huang
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
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13
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Zong Z, Liu J, Hu T, Li D, Tian H, Liu C, Zhang M, Zou G. PbTe/Pb quasi-one-dimensional nanostructure material: controllable array synthesis and side branch formation by electrochemical deposition. NANOTECHNOLOGY 2010; 21:185302. [PMID: 20378953 DOI: 10.1088/0957-4484/21/18/185302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A periodic PbTe/Pb nanostructure material with quasi-one dimension has been electrodeposited onto a SiO(2)/Si substrate by fabricating an ultra-thin electrolyte layer. The emergence of side branches at the edge of the nanowire array results from the non-uniform electric field distribution and the polycrystalline structure of the nanowires. The measurement of the electrical characteristics indicates that the crystal boundaries and defects in the nanowire could influence the change of resistance in the branch parts. This research should facilitate the acquisition of high-quality nanowire arrays by electrodeposition.
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Affiliation(s)
- Zhaocun Zong
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China.
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14
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Weng YY, Zhang B, Fu SJ, Wang M, Peng RW, Ma GB, Shu DJ, Ming NB. Self-templating growth of copper nanopearl-chain arrays in electrodeposition. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2010; 81:051607. [PMID: 20866239 DOI: 10.1103/physreve.81.051607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2010] [Indexed: 05/29/2023]
Abstract
We report here a unique in-plane self-templating electrochemical growth of arrays of copper nanopearl chains from an ultrathin layer of CuSO4 electrolyte. Scanning electron microscopy indicates that the electrodeposit filaments form equally spaced bundles, which consist of long, straight, pearl-chain-like copper filaments with corrugated periodic structure. The bundle separation can be tuned by changing the applied electric current in electrodeposition. Experiments show that the periodic morphology on the nanopearl chain corresponds to the periodic distribution of copper and cuprous oxide. The mechanism for the bundle formation is discussed.
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Affiliation(s)
- Yu-Yan Weng
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
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15
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Yu G, Hu X, Liu D, Sun D, Li J, Zhang H, Liu H, Wang J. Electrodeposition of submicron/nanoscale Cu2O/Cu junctions in an ultrathin CuSO4 solution layer. J Electroanal Chem (Lausanne) 2010. [DOI: 10.1016/j.jelechem.2009.11.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Interfacial energy gradient at a front of an electrochemical wave appearing in CuSn-alloy oscillatory electrodeposition. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.02.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Zhong S, Koch T, Wang M, Scherer T, Walheim S, Hahn H, Schimmel T. Nanoscale twinned copper nanowire formation by direct electrodeposition. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:2265-70. [PMID: 19670394 DOI: 10.1002/smll.200900746] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Affiliation(s)
- Sheng Zhong
- Institute of Nanotechnology, Forschungszentrum Karlsruhe, 76021 Karlsruhe, Germany.
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18
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Huang XJ, O'Mahony AM, Compton RG. Microelectrode arrays for electrochemistry: approaches to fabrication. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:776-788. [PMID: 19340821 DOI: 10.1002/smll.200801593] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Microelectrode arrays have unique electrochemical properties such as small capacitive-charging currents, reduced iR drop, and steady-state diffusion currents. These properties enable the use of microelectrode arrays and have captured much interest in the field of electrochemistry. Techniques for the fabrication of such arrays are reviewed. The relative features and merits of different techniques are also discussed.
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Affiliation(s)
- Xing-Jiu Huang
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory Oxford University, South Parks Road Oxford OX1 3QZ, UK
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19
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Zong Z, Yu H, Nui L, Zhang M, Wang C, Li W, Men Y, Yao B, Zou G. Potential-induced copper periodic micro-/nanostructures by electrodeposition on silicon substrate. NANOTECHNOLOGY 2008; 19:315302. [PMID: 21828783 DOI: 10.1088/0957-4484/19/31/315302] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We demonstrate the fabrication of large scale nano- and micropatterned copper periodic structures on a silicon substrate without imposed templates. In the electrodeposition process, we employ a periodic variation voltage in an ultrathin layer of concentrated CuSO(4) electrolyte. The pattern can be controlled by varying the frequency of the applied potential. We suggest that the observed periodic micro-/nanostructures are caused by the lag of the migrating ion concentration profile versus the applied voltage profile near the tip of the growth.
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Affiliation(s)
- Zhaocun Zong
- National Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, People's Republic of China
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Ji Z, Li H, Liu Y, Hu W, Liu Y. The replacement reaction controlling the fractal assembly of copper nanoparticles. NANOTECHNOLOGY 2008; 19:135602. [PMID: 19636151 DOI: 10.1088/0957-4484/19/13/135602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this paper we describe a fractal assembly of copper nanoparticles on different substrates by controlling the chemical replacement reaction. Through calculation, we found that the 'fractal dimensions' of copper dendrites synthesized by us were about 1.832, which agreed well with the 'fractal dimensions' of natural fern leaves (fractal dimension, 1.826), suggesting that the fern fractal model was useful to describe the self-assembly of our copper nanoparticles during the chemical replacement reaction process. These results will be beneficial for the understanding of the role that highly nonequilibrium conditions play in the formation of fractal clusters as well as the self-assembly mystique of metallic nanoparticles in nonequilibrium conditions and also helpful in the future assembly of complicated nanoarchitectures of metallic nanoparticles for potential applications.
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Affiliation(s)
- Zhuoyu Ji
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China. Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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21
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Yu G, Wang J, Liu D, Liu H. The formation of patterns of electrochemical deposits in an ultra-thin layer of CuSO4 solution. J Electroanal Chem (Lausanne) 2007. [DOI: 10.1016/j.jelechem.2007.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Devos O, Gabrielli C, Beitone L, Mace C, Ostermann E, Perrot H. Growth of electrolytic copper dendrites. I: Current transients and optical observation. J Electroanal Chem (Lausanne) 2007. [DOI: 10.1016/j.jelechem.2007.03.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Liu T, Wang S, Shi ZL, Ma GB, Wang M, Peng RW, Hao XP, Ming NB. Long-range ordering effect in electrodeposition of zinc and zinc oxide. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2007; 75:051606. [PMID: 17677077 DOI: 10.1103/physreve.75.051606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Indexed: 05/16/2023]
Abstract
In this paper, we report the long-range ordering effect observed in the electro-crystallization of Zn and ZnO from an ultrathin aqueous electrolyte layer of ZnSO4 . The deposition branches are regularly angled, covered with random-looking, scalelike crystalline platelets of ZnO. Although the orientation of each crystalline platelet of ZnO appears random, transmission electron microscopy shows that they essentially possess the same crystallographic orientation as the single-crystalline zinc electrodeposit underneath. Based on the experimental observations, we suggest that this unique long-range ordering effect results from an epitaxial nucleation effect in electrocrystallization.
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Affiliation(s)
- Tao Liu
- National Laboratory of Solid State Microstructures & Department of Physics, Nanjing University, Nanjing, China
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24
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Liu T, Wang S, Wang M, Peng RW, Ma GB, Hao XP, Ming NB. Self-organization of periodically structured single-crystalline zinc branches by electrodeposition. SURF INTERFACE ANAL 2006. [DOI: 10.1002/sia.2320] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Zhang M, Zuo G, Zong Z, Cheng H, He Z, Yang C, Zou G. Self-assembly of copper micro/nanoscale parallel wires by electrodeposition on a silicon substrate. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2006; 2:727-31. [PMID: 17193112 DOI: 10.1002/smll.200500338] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Affiliation(s)
- Mingzhe Zhang
- National Laboratory of Surperhard Materials and Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
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Weng YY, Si JW, Gao WT, Wu Z, Wang M, Peng RW, Ming NB. Noise-reduced electroless deposition of arrays of copper filaments. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2006; 73:051601. [PMID: 16802940 DOI: 10.1103/physreve.73.051601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2005] [Revised: 12/19/2005] [Indexed: 05/10/2023]
Abstract
We report here a self-organized electroless deposition of copper in an ultrathin layer CuSO4 of electrolyte. Microscopically the branching rate of the copper deposits is significantly decreased, forming an array of smooth polycrystalline filaments. Compared with a conventional electrodeposition system, no macroscopic electric field is involved and the thickness of the electrolyte layer is greatly decreased. Therefore the electroless deposition takes place in a nearly ideal, two-dimensional diffusion-limited environment. We suggest that restriction of the thickness of the electrolyte film is responsible for the generation of smoother branches of the electrodeposits. Our data also show that even in a diffusion-limited scenario the aggregate morphology is not necessarily very ramified and fractal-like.
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Affiliation(s)
- Yu-Yan Weng
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
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Zou G, Xiong K, Jiang C, Li H, Li T, Du J, Qian Y. Fe3O4 Nanocrystals with Novel Fractal. J Phys Chem B 2005; 109:18356-60. [PMID: 16853363 DOI: 10.1021/jp052678c] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fe3O4 novel fractal nanocrystals have been synthesized by a surfactant-assisted solvothermal process for the first time. X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), Mössbauer spectroscopy (MS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been used to investigate the novel fractal nanocrystals. The lengths of the fractals are about 2-3 microm, and the trunks and branches of Fe3O4 fractals have almost the same diameters of ca. 30-50 nm. The roles of surfactant PEG-20000 and N2H4 have been discussed in detail. One key fact has been found that the ferrocene concentration has a vital effect on the morphologies of the products. The side-branching process and the oscillation of the concentration have been proposed to illustrate the formation mechanisms of the fractal nanocrystals. In addition, magnetic properties of Fe3O4 fractal nanocrystals have also been detected by a vibrating sample magnetometer, showing relatively high saturation magnetization (Ms) of ca. 78.75 emu/g.
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Affiliation(s)
- Guifu Zou
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P R China
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Cao M, Liu T, Gao S, Sun G, Wu X, Hu C, Wang ZL. Single-Crystal Dendritic Micro-Pines of Magnetic α-Fe2O3: Large-Scale Synthesis, Formation Mechanism, and Properties. Angew Chem Int Ed Engl 2005; 44:4197-201. [PMID: 15940730 DOI: 10.1002/anie.200500448] [Citation(s) in RCA: 199] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Minhua Cao
- Institute of Polyoxometalate Chemistry, Northeast Normal University, Changchun, 130024, PR China
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29
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Cao M, Liu T, Gao S, Sun G, Wu X, Hu C, Wang ZL. Single-Crystal Dendritic Micro-Pines of Magnetic α-Fe2O3: Large-Scale Synthesis, Formation Mechanism, and Properties. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500448] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Sun B, Zou XW, Jin ZZ. Movement of the deposit segment in thin layer electrochemical cell – a conjugate dissolution/deposition behavior. Electrochim Acta 2004. [DOI: 10.1016/j.electacta.2004.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Cui G, Xu W, Guo C, Xiao X, Xu H, Zhang D, Jiang L, Zhu D. Conducting Nanopearl Chains Based on the Dmit Salt. J Phys Chem B 2004. [DOI: 10.1021/jp048195a] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guanglei Cui
- Laboratory of Organic Solids, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, P. R. China and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
| | - Wei Xu
- Laboratory of Organic Solids, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, P. R. China and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
| | - Chaowei Guo
- Laboratory of Organic Solids, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, P. R. China and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
| | - Xunwen Xiao
- Laboratory of Organic Solids, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, P. R. China and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
| | - Hai Xu
- Laboratory of Organic Solids, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, P. R. China and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
| | - Deqing Zhang
- Laboratory of Organic Solids, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, P. R. China and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
| | - Lei Jiang
- Laboratory of Organic Solids, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, P. R. China and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
| | - Daoben Zhu
- Laboratory of Organic Solids, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, P. R. China and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
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32
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Periodic structures of randomly distributed Cu/Cu2O nanograins and periodic variations of cell voltage in copper electrodeposition. Electrochim Acta 2004. [DOI: 10.1016/j.electacta.2003.12.049] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Sun B, Zou XW, Jin ZZ. Morphological evolution in the electrodeposition of the Pb-Sn binary system. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2004; 69:067202. [PMID: 15244790 DOI: 10.1103/physreve.69.067202] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2003] [Revised: 12/10/2003] [Indexed: 05/24/2023]
Abstract
Morphological evolution in the electrodeposition of Pb-Sn binary system is studied. As the second component increases, the morphology of the codeposit changes from dendrite to ramification, to dense branch, and finally to fractal structure, respectively. The evolution arises from the influence of crystallographic texture, which leads to a splitting of dendritic tips and the formation of ramified morphology. This work provides direct evidence to explore the crystallographic influence on the morphological evolution in electrodeposition.
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Affiliation(s)
- Bin Sun
- Department of Physics, Wuhan University, Wuhan 430072, China
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34
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Huang SY, Zou XW, Shao ZG, Tan ZJ, Jin ZZ. Particle-cluster aggregation on a small-world network. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2004; 69:067104. [PMID: 15244783 DOI: 10.1103/physreve.69.067104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2003] [Revised: 10/13/2003] [Indexed: 05/24/2023]
Abstract
To describe the aggregation behaviors on substrates with long-range jump paths, a model of particle-cluster aggregation on a two-dimensional small-world network is presented. This model is characterized by two parameters: the clustering exponent alpha and the long-range connection rate phi. The results show that there exists an asymptotic fractal dimension D(max)(f) that depends upon alpha. With decrement of alpha, D(max)(f) varies from 1.7 to 2.0, which corresponds to a crossover from diffusion-limited-aggregation-like to dense growth. The change of the aggregation pattern results from the long-range connection in the network, which reduces the effect of screening during the aggregation. When the system size is not large enough, the effective fractal dimension D(f) depends upon phi because of the finite-size effect. With primitive analysis, we obtain the expression of the effective fractal dimension D(f) with the network parameters alpha and phi.
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Affiliation(s)
- Sheng-You Huang
- Department of Physics, Wuhan University, Wuhan 430072, People's Republic of China
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35
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Wang M, Feng Y, Yu GW, Gao WT, Zhong S, Peng RW, Ming NB. Self-organization of nanostructured copper filament array by electrochemical deposition. SURF INTERFACE ANAL 2004. [DOI: 10.1002/sia.1689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Wang Y, Cao Y, Wang M, Zhong S, Zhang MZ, Feng Y, Peng RW, Hao XP, Ming NB. Spontaneous formation of periodic nanostructured film by electrodeposition: Experimental observations and modeling. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2004; 69:021607. [PMID: 14995458 DOI: 10.1103/physreve.69.021607] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2003] [Indexed: 05/24/2023]
Abstract
In this paper we report the spontaneous formation of a nanostructured film by electrodeposition from an ultrathin electrolyte layer of CuSO4. The film consists of straight periodic ditches and ridges, which corresponds to the alternating deposition of nanocrystallites of copper and copper plus cuprous oxide, respectively. The periodicity on the film may vary from 100 nm to a few hundred nanometers depending on the experimental conditions. In the formation of the periodically nanostructured film, oscillating voltage/current has been observed across the electrodes, and the frequency depends on the pH of the electrolyte and the applied current/voltage. A model based on the coupling of [Cu2+] and [H+] in the electrodeposition is proposed to describe the oscillatory phenomena in our system. The calculated results are in agreement with the experimental observations.
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Affiliation(s)
- Yuan Wang
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
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Zhong S, Wang Y, Wang M, Zhang MZ, Yin XB, Peng RW, Ming NB. Formation of nanostructured copper filaments in electrochemical deposition. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2003; 67:061601. [PMID: 16241233 DOI: 10.1103/physreve.67.061601] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2002] [Revised: 02/24/2003] [Indexed: 05/04/2023]
Abstract
In this paper, we report in detail the studies of a different self-organized copper electrodeposition carried out in an ultrathin layer of CuSO4 electrolyte. On a macroscopic scale, the morphology of the electrodeposit is fingerlike. Microscopically, each fingering branch consists of long, straight copper filaments with periodic corrugated nanostructures. Branching rate of the electrodeposit is significantly decreased, compared with the patterns grown in conventional systems. Detailed information of the growth environment in the ultrathin electrodeposition system is provided, the formation mechanism of the periodic nanostructures on the deposit filaments is explored, and the origin of the significant descent of branching rate of the electrodeposit is discussed.
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Affiliation(s)
- Sheng Zhong
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, China
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Peng Q, Dong Y, Deng Z, Li Y. Selective synthesis and characterization of CdSe nanorods and fractal nanocrystals. Inorg Chem 2002; 41:5249-54. [PMID: 12354059 DOI: 10.1021/ic0257266] [Citation(s) in RCA: 159] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
CdSe nanorods and dendritic fractals were synthesized through a novel controllable solution-phase hydrothermal method. Soluble selenite was employed to provide a highly reactive Se source in the synthesis. Both morphologies and phases of the CdSe products could be successfully controlled by choosing appropriate complexing agents to adjust the dynamics of the reaction process. Reaction temperature and Cd/Se ratio in raw materials were also important parameters influencing the morphologies and phases of the products. The phase structures, morphologies, and optical properties of the CdSe products were investigated by XRD, TEM, HRTEM, and UV-vis and photoluminescence spectroscopies. The formation mechanisms of the nanorods and fractals were investigated and discussed on the basis of the experimental results.
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Affiliation(s)
- Qing Peng
- Department of Chemistry, The Key Laboratory of Atomic & Molecular Nanosciences (Ministry of Education, China), Tsinghua University, Beijing 100084, P.R. China
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A Novel in Situ Oxidization–Sulfidation Growth Route via self-Purification Process to β-In2S3 Dendrites. J SOLID STATE CHEM 2002. [DOI: 10.1006/jssc.2002.9598] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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