Готові списки джерел за темами / Cu nanowire array

Добірка наукової літератури з теми "Cu nanowire array"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Cu nanowire array"

Choi, Soon Mee, Jiung Cho, Young Keun Kim, and Cheol Jin Kim. "TEM Analysis of Multilayered Co/Cu Nanowire Synthesized by DC Electrodeposition." Solid State Phenomena 124-126 (June 2007): 1233–36. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1233.

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As-received multilayered Co/Cu nanowire arrays were examined by TEM, which were synthesized by pulsed DC electrodeposition using anodized aluminum oxide (AAO) templates. The multilayered Co/Cu nanowire exhibited magnetism in the perpendicular direction to the long wire axis. These nanowire can be applied to sensor array, magnetic bead(biocompatible), MRI contrast enhancing agent, ferro-fluid. Although the characterization of the multilayered Co/Cu nanowire using XRD and VSM and microstructural analysis using TEM on the bare nanowires extracted from AAO templates have been reported, interface analysis between Co and Cu phase or HREM analysis has not been reported in detail. We have prepared TEM specimen with large thin area which was appropriate for the interface analysis between Co and Cu layer without removing AAO templates using tripod polishing method. Tripod polishing proved very efficient to secure the large observable area during TEM session since the polishing angle can be precisely controlled, regardless of the mechanical strength differences in constituents. Thus we could observe not only the interface between Co and Cu layer but also the interface between the metallic layers and AAO templates. Microstructure, composition, and the concentration variation of each Co and Cu layer and the interfaces were analyzed with TEM and STEM.

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Marchal, Nicolas, Tristan da Câmara Santa Clara Gomes, Flavio Abreu Araujo, and Luc Piraux. "Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected NixFe1−x/Cu Multilayered Nanowire Networks." Nanomaterials 11, no. 5 (April 27, 2021): 1133. http://dx.doi.org/10.3390/nano11051133.

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The versatility of the template-assisted electrodeposition technique to fabricate complex three-dimensional networks made of interconnected nanowires allows one to easily stack ferromagnetic and non-magnetic metallic layers along the nanowire axis. This leads to the fabrication of unique multilayered nanowire network films showing giant magnetoresistance effect in the current-perpendicular-to-plane configuration that can be reliably measured along the macroscopic in-plane direction of the films. Moreover, the system also enables reliable measurements of the analogous magneto-thermoelectric properties of the multilayered nanowire networks. Here, three-dimensional interconnected NixFe1−x/Cu multilayered nanowire networks (with 0.60≤x≤0.97) are fabricated and characterized, leading to large magnetoresistance and magneto-thermopower ratios up to 17% and −25% in Ni80Fe20/Cu, respectively. A strong contrast is observed between the amplitudes of magnetoresistance and magneto-thermoelectric effects depending on the Ni content of the NiFe alloys. In particular, for the highest Ni concentrations, a strong increase in the magneto-thermoelectric effect is observed, more than a factor of 7 larger than the magnetoresistive effect for Ni97Fe3/Cu multilayers. This sharp increase is mainly due to an increase in the spin-dependent Seebeck coefficient from −7 µV/K for the Ni60Fe40/Cu and Ni70Fe30/Cu nanowire arrays to −21 µV/K for the Ni97Fe3/Cu nanowire array. The enhancement of the magneto-thermoelectric effect for multilayered nanowire networks based on dilute Ni alloys is promising for obtaining a flexible magnetic switch for thermoelectric generation for potential applications in heat management or logic devices using thermal energy.

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Yang, Shan, Ru Xiao, Tongwei Zhang, Yuan Li, Benhe Zhong, Zhenguo Wu, and Xiaodong Guo. "Cu nanowires modified with carbon-rich conjugated framework PTEB for stabilizing lithium metal anodes." Chemical Communications 57, no. 99 (2021): 13606–9. http://dx.doi.org/10.1039/d1cc04822h.

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The carbon-rich conjugated framework PTEB is employed to modify Cu nanowire arrays for stabilizing Li anodes. A high CE (over 99%) and long lifespan (over 800 h) are achieved. The rich acetylene bonds serve as lithiophilic sites and 3D nanowire array structure promotes uniform Li+ flux.

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Patella, Bernardo, Carmelo Sunseri, and Rosalinda Inguanta. "Nanostructured Based Electrochemical Sensors." Journal of Nanoscience and Nanotechnology 19, no. 6 (June 1, 2019): 3459–70. http://dx.doi.org/10.1166/jnn.2019.16110.

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In this work, we present some results concerning the electrochemical behavior of nanostructured-based electrochemical sensors. In particular, the attention has been focused on Pd and Cu nanowires for detection of hydrogen peroxide and NiO thin film or Ni@NiO core–shell nanowires for detection of mercury ions. Ordered array of Pd and Cu nanowires was obtained through displacement deposition reaction in a commercial polycarbonate membrane acting as a template. The method leads to stable nanostructured electrodes of Pd and Cu with high surface area. For the detection of mercury ions, we have fabricated a Ni/NiO electrochemical sensor, obtained by mild thermal oxidation of Ni-foil. Some results on Ni@NiO core–shell nanowires were also reported. The effect of oxidation time and temperature was studied in order to compare performances of the Ni@NiO nanowire array with those of NiO thin film. All samples were characterized by XRD, SEM and EDS analysis. Electrochemical tests have been conducted in order to characterize specific electrode performance such as sensibility, selectivity, and accuracy. Highly satisfying results have been obtained.

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Meng, Fan-Lu, Hai-Xia Zhong, Qi Zhang, Kai-Hua Liu, Jun-Min Yan, and Qing Jiang. "Integrated Cu3N porous nanowire array electrode for high-performance supercapacitors." Journal of Materials Chemistry A 5, no. 36 (2017): 18972–76. http://dx.doi.org/10.1039/c7ta05439d.

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da Câmara Santa Clara Gomes, Tristan, Nicolas Marchal, Flavio Abreu Araujo, and Luc Piraux. "Flexible thermoelectric films based on interconnected magnetic nanowire networks." Journal of Physics D: Applied Physics 55, no. 22 (February 3, 2022): 223001. http://dx.doi.org/10.1088/1361-6463/ac4d47.

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Abstract Recently, there has been increasing interest in the fabrication of flexible thermoelectric devices capable of cooling or recovering waste heat from hot surfaces with complex geometries. This paper reviews recent developments on three-dimensional networks of interconnected ferromagnetic nanowires, which offer new perspectives for the fabrication of flexible thermoelectric modules. The nanowire arrays are fabricated by direct electrodeposition into the crossed nanopores of polymeric templates. This low-cost, easy and reliable method allows control over the geometry, composition and morphology of the nanowire array. Here we report measured thermoelectric characteristics as a function of temperature and magnetic field of nanowire networks formed from pure metals (Co, Fe, Ni), alloys (NiCo, NiFe and NiCr) and FM/Cu multilayers (with FM = Co, Co50Ni50 and Ni80Fe20). Homogeneous nanowire arrays have high thermoelectric power factors, almost as high as their bulk constituents, and allow for positive and negative Seebeck coefficient values. These high thermoelectric power factors are essentially maintained in multilayer nanowires which also exhibit high magnetic modulability of electrical resistivity and Seebeck coefficient. This has been exploited in newly designed flexible thermoelectric switches that allow switching from an ‘off’ state with zero thermoelectric output voltage to an ‘on’ state that can be easily measured by applying or removing a magnetic field. Overall, these results are a first step towards the development of flexible thermoelectric modules that use waste heat to power thermally activated sensors and logic devices.

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Guo, Li-Jun Wan, Chuan-Feng Zhu, De-Liang Yang, Dong-Min Chen, and Chun-Li Bai. "Ordered Ni−Cu Nanowire Array with Enhanced Coercivity." Chemistry of Materials 15, no. 3 (February 2003): 664–67. http://dx.doi.org/10.1021/cm0208962.

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Li, Ruizhi, Zhijun Lin, Xin Ba, Yuanyuan Li, Ruimin Ding, and Jinping Liu. "Integrated copper–nickel oxide mesoporous nanowire arrays for high energy density aqueous asymmetric supercapacitors." Nanoscale Horizons 1, no. 2 (2016): 150–55. http://dx.doi.org/10.1039/c5nh00100e.

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An integrated (Cu,Ni)O mesoporous nanowire array that delivers a high specific capacitance has been used to construct high-performance aqueous asymmetric supercapacitors of (Cu,Ni)O₍₊₎//AC₍₋₎.

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Dou, Wen Li, Wen Xu, Shao Hui Xu, Guang Tao Fei, and Yi Ming Xiao. "Near-Infrared Reflection Spectra of Copper Nanowire Array Structures." Advanced Materials Research 1118 (July 2015): 125–28. http://dx.doi.org/10.4028/www.scientific.net/amr.1118.125.

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We present a detailed study on near-infrared (NIR) reflection spectra of Cu nanowire arrays (NWAs) which are embedded in porous anodic alumina oxide templates and with pore diameters from 35 nm to 80 nm. We find that the NIR reflection of these samples is out of the frequency regime for surface-plasmon resonance induced by intra-and inter-band excitations. However, the intensity of the NIR reflection of Cu NWAs depends strongly on sample parameters and temperature. The measurements are carried out at temperatures setting to be 4 K, 77 K, 200 K, and at room temperature. The optical response of the Cu NWAs in NIR bandwidth is attributed to localized surface-plasmon oscillations and the NIR reflectance increases with temperature up to room-temperature. The physical mechanisms behind these interesting findings are discussed.

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Ma, Ming, Kristina Djanashvili, and Wilson A. Smith. "Selective electrochemical reduction of CO2to CO on CuO-derived Cu nanowires." Physical Chemistry Chemical Physics 17, no. 32 (2015): 20861–67. http://dx.doi.org/10.1039/c5cp03559g.

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Дисертації з теми "Cu nanowire array"

Fan, Hsin-Hsin, and 范馨心. "Flower-like Cu/CuxO Nanowire Array Electrodes for Non-enzymatic Glucose Sensing." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/2s292r.

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Wu, Chung-Ying, and 吳忠縈. "Fabrication and structure properties of multilayered CoNi/Cu nanowire arrays electrodeposited in AAO templates." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/92260154992008586336.

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碩士
南台科技大學
化學工程與材枓工程系
97
In this study, the multilayered CoNi/Cu nanowire arrays is prepared by using the arrays nanoporous of anodic aluminum oxide membrane as a template (AAO template ) with electrodeposition method. The diameter of AAO pores is about 250nm, 90nm and 70nm, respectively. The CoNi/Cu nanowire arrays were deposited at various electrolytic condition. The optimum electrolytic conditions had been investigated. Furthermore, we changed in non-ferromagnetic layer thickness, Co/Ni ions concentration and pore diameter of AAO, and its microcrystalline structure and magnetic properties were investigated.. The deposition rates is increased with the increasing of the electrolytic potential. CoNi alloy layers almost not be obtained as the electrolytic potential less then -0.9 V. The CoNi/Cu nanowires were deposited successfully in the electrolytic potential range of -0.9 V to -1.2 V. On the other hand, the multilayered CoNi/Cu nanowires were not grown uniformly as the electrolytic potential above -1.0 V. Therefore, the optimum electrolytic potential was determined of -1.0 V. Crystalline structure of multilayered CoNi/Cu nanowires was always fcc structure with any deposited potential for Co-Ni alloy and Cu. On the other hand, the thickness of Cu layer affect significantly on the magnetization of Co-Ni alloy layers. When the thickness of layer was above 1.5μm and had a bed magnetization. Different Co-Ni deposition potential affects not only the deposition rate of the nanowire, but also the impact of Co-Ni layers of the proportion of elements. In addition, in the control of various Co-Ni ion concentration can also adjust the ratio of elements of Co-Ni alloy layer. In the TEM analysis of the elements also proved for the continuous multilayered nanowires compose of the Co-Ni layers and Cu layers. From VSM pattern the saturate magnetization can be 11000 Oe., the easy magnetization axis are all perpendicular the nanowires, and the coercivity of multilayered CoNi/Cu nanowires are in the soft and hard magnet range. The multilayered CoNi/Cu nanowires with different Cu layer thickness, as well as Co-Ni ratio of ion concentration changes on the magnetic properties also change. Looked in the coercive, because the magnetism crystal make multilayered CoNi/Cu nanowires deviation hard magnetism the material, to this us may know in multilayered CoNi/Cu nanowires may do for outside the magnetically soft material good application, may depend on the demand affiliation in the hard magnetism aspect by the different atom content ratio alloy nanowire, synthesizes must material, regarding future on magnetic recording media its application value.

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Тези доповідей конференцій з теми "Cu nanowire array"

Teshima, Hiromasa, Kohei Kojima, and Yang Ju. "Fabrication of Anodic Aluminum Oxide Template and Cu Nanowire Surface Fastener." In ASME 2013 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ipack2013-73125.

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There is an urgent need in surface mount technology (SMT) for a nontoxic, reusable and low temperature bonding technique which can afford good mechanical support as well as electrical contact. Meanwhile in the nanotechnology, many excellent and unique structure-related properties such as the high mechanical strength, the high conductivity and the adhesion ability of gecko feet have been studied. Our lab proposes a new patterned structure of Au nanowire array named nanowire surface fastener (NSF), which cold bonding for surface mount technology can be realized at room temperature. Then various methods have been developed to fabricate nanowire, such as arc discharge, catalytic CVD growth and template synthesis, and so on. Among these methods, the template method has been widely used for preparing one-dimensional nanostructures such as metals, semiconductors, polymers, and other materials by electrochemical, electroless deposition or sol-gel technique. Especially anodic aluminum oxide template assisted way has attached considerable attention due to its unique structure properties, such as controllable pore diameter, extremely narrow pore size distribution with high densities, high aspect ratios, and ideally cylindrical pore shape. The well arranged porous anodic aluminum oxide membrane is fabricated from aluminum film by two steps zM oxalic acid electrolytes. The anodic aluminum oxide membrane was investigated for features such as pore size, interpore distance, and thickness by 40 V. It is important for fabrication of porous anodic aluminum oxide template to find out elimination of the barrier layer of oxide and the pore extending rate by 0.5 M phosphoric acid. Morphologies of surface of aluminum film between anodization process and the anodic aluminum oxide barrier layer was researched by using atomic force microscope and scanning electron microscope. Results showed that the anodic aluminum oxide having the same diameter of the pore and the well arranged pore array without branching channel was obtained. The diameter of the pore before the pore extending treatment is 42 nm and the diameter of the pore after the pore extending treatment for 30 minutes is 86 nm. It was found that the diameter of the pore increased per 15 nm by the pore extending treatment for 10 minutes. We fabricated the through-hole anodic aluminum oxide template and made Cu nanowire by the template of our own making. By using Cu nanowire, we try to produce nanowire surface fastener and evaluate its properties.

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Ali, M. Yakut, Fanghao Yang, Ruixian Fang, Chen Li, and Jamil Khan. "Effect of 1D Cu Nanostructures on Heat Transfer Characteristics of Single Phase Microchannel Heat Sink." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44563.

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This study experimentally assesses single phase heat transfer characteristics of a shallow rectangular microchannel heat sink whose surface is enhanced with copper nanowires (CuNWs). The hydraulic diameter of the channel is 672 μm and the bottom wall is coated with Cu nanowires (CuNWs) of 200 nm in diameter and 50 μm in length. CuNWs are grown on the Cu heat sink by electrochemical synthesis technique which is inexpensive and readily scalable. The heat transfer and pressure drop results of CuNWs enhanced heat sink are compared with that of bare copper heat sink using deionized (DI) water as the working fluid at Reynolds Number (Re) ranging from 106–636. The experimental results indicate an enhancement in Nusselt Number (Nu) at all Re with a maximum enhancement of 24% at Re = 106. The enhanced thermal performance is attributed to two properties of Cu nanowire arrays — improvement in surface wettability characteristics and increased heat transfer surface area.

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Jiang, Han, Stuart Robertson, Zhaoxia Zhou, and Changqing Liu. "Cu-Cu Bonding with Cu Nanowire Arrays for Electronics Integration." In 2020 IEEE 8th Electronics System-Integration Technology Conference (ESTC). IEEE, 2020. http://dx.doi.org/10.1109/estc48849.2020.9229670.

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