A study of control growth of three-dimensional nanowire networks of tungsten oxides: From aligned nanowires through hybrid nanostructures to 3D networks

In this work, the fabrication of zinc oxide (ZnO) nanowire networks is presented. By combining ion-track technology, electrochemical deposition, and atomic layer deposition, hierarchical and self-supporting three-dimensional (3D) networks of pure ZnO- and TiO2-coated ZnO nanowires were synthesized. Analysis by means of high-resolution transmission electron microscopy revealed a highly crystalline structure of the electrodeposited ZnO wires and the anatase phase of the TiO2 coating. In photoelectrochemical measurements, the ZnO and ZnO/TiO2 nanowire networks, used as anodes, generated higher photocurrents compared to those produced by their film counterparts. The ZnO/TiO2 nanowire network exhibited the highest photocurrents. However, the protection by the TiO2 coatings against chemical corrosion still needs improvement. The one-dimensionality of the nanowires and the large electrolyte-accessible area make these 3D networks promising photoelectrodes, due to the improved transport properties of photogenerated charge carriers and faster redox reactions at the surface. Moreover, they can find further applications in e.g., sensing, catalytical, and piezoelectric devices.

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Magneto-Transport in Flexible 3D Networks Made of Interconnected Magnetic Nanowires and Nanotubes

Nanomaterials ◽

10.3390/nano11010221 ◽

2021 ◽

Vol 11 (1) ◽

pp. 221

Author(s):

Tristan da Câmara Santa Clara Gomes ◽

Nicolas Marchal ◽

Flavio Abreu Araujo ◽

Yenni Velázquez Galván ◽

Joaquín de la Torre Medina ◽

...

Keyword(s):

Magnetic Anisotropy ◽

Giant Magnetoresistance ◽

Three Dimensional ◽

Magnetic Nanostructures ◽

Angle Distribution ◽

Magnetic Nanowires ◽

Magnetic Field Sensors ◽

Flexible Polymer ◽

Nanowire Networks ◽

3D Networks

Electrochemical deposition of interconnected nanowires and nanotubes made of ferromagnetic metals into track-etched polycarbonate templates with crossed nanochannels has been revealed suitable for the fabrication of mechanically stable three-dimensional magnetic nanostructures with large surface area. These 3D networks embedded into flexible polymer membranes are also planar and lightweight. This fabrication technique allows for the control of the geometric characteristics and material composition of interconnected magnetic nanowire or nanotube networks, which can be used to fine-tune their magnetic and magneto-transport properties. The magnetostatic contribution to the magnetic anisotropy of crossed nanowire networks can be easily controlled using the diameter, packing density, or angle distribution characteristics. Furthermore, the fabrication of Co and Co-rich NiCo alloy crossed nanowires with textured hcp phases leads to an additional significant magnetocrystalline contribution to the magnetic anisotropy that can either compete or add to the magnetostatic contribution. The fabrication of an interconnected nanotube network has also been demonstrated, where the hollow core and the control over the tube wall thickness add another degree of freedom to control the magnetic properties and magnetization reversal mechanisms. Finally, three-dimensional networks made of interconnected multilayered nanowire with a succession of ferromagnetic and non-magnetic layers have been successfully fabricated, leading to giant magnetoresistance responses measured in the current-perpendicular-to-plane configuration. These interconnected nanowire networks have high potential as integrated, reliable, and stable magnetic field sensors; magnetic devices for memory and logic operations; or neuromorphic computing.

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Nano-soldering of magnetically aligned three-dimensional nanowire networks

Nanotechnology ◽

10.1088/0957-4484/21/11/115604 ◽

2010 ◽

Vol 21 (11) ◽

pp. 115604 ◽

Cited By ~ 19

Author(s):

Fan Gao ◽

Zhiyong Gu

Keyword(s):

Three Dimensional ◽

Nanowire Networks ◽

Magnetically Aligned

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Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected NixFe1−x/Cu Multilayered Nanowire Networks

Nanomaterials ◽

10.3390/nano11051133 ◽

2021 ◽

Vol 11 (5) ◽

pp. 1133

Author(s):

Nicolas Marchal ◽

Tristan da Câmara Santa Clara Gomes ◽

Flavio Abreu Araujo ◽

Luc Piraux

Keyword(s):

Giant Magnetoresistance ◽

Nanowire Array ◽

Three Dimensional ◽

Strong Increase ◽

Thermoelectric Effect ◽

Heat Management ◽

Thermoelectric Effects ◽

Nanowire Network ◽

Potential Applications ◽

Nanowire Networks

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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Critical Analysis of Phase Evolution, Morphological Control, Growth Mechanism and Photophysical Applications of ZnS Nanostructures (Zero-Dimensional to Three-Dimensional): A Review

Crystal Growth & Design ◽

10.1021/acs.cgd.6b01463 ◽

2016 ◽

Vol 17 (1) ◽

pp. 381-407 ◽

Cited By ~ 16

Author(s):

Ashish Tiwari ◽

S. J. Dhoble

Keyword(s):

Growth Mechanism ◽

Critical Analysis ◽

Three Dimensional ◽

Phase Evolution ◽

Morphological Control ◽

Control Growth

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Three-dimensional ZnO hybrid nanostructures for oxygen sensing application

Nanotechnology ◽

10.1088/0957-4484/17/2/031 ◽

2005 ◽

Vol 17 (2) ◽

pp. 526-530 ◽

Cited By ~ 46

Author(s):

Min-Chang Jeong ◽

Byeong-Yun Oh ◽

Ok-Hyun Nam ◽

Taek Kim ◽

Jae-Min Myoung

Keyword(s):

Oxygen Sensing ◽

Three Dimensional ◽

Hybrid Nanostructures ◽

Sensing Application

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Three-dimensional interconnected Nicore–NiOshell nanowire networks for lithium microbattery architectures

Journal of Materials Chemistry A ◽

10.1039/c5ta10639g ◽

2016 ◽

Vol 4 (5) ◽

pp. 1603-1607 ◽

Cited By ~ 18

Author(s):

Alexandru Vlad ◽

Vlad-Andrei Antohe ◽

Juan Manuel Martinez-Huerta ◽

Etienne Ferain ◽

Jean-François Gohy ◽

...

Keyword(s):

Three Dimensional ◽

Lithium Storage ◽

Nanowire Networks ◽

Storage Properties ◽

The Ideal

3D interconnected Nicore–NiOshell electrodes are simple to realize and scalable and provide superior lithium storage properties. Could this be the ideal configuration for microbattery applications?

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