Ultrafast UV response detectors based on multi-channel ZnO nanowire networks

RSC Advances ◽  
2015 ◽  
Vol 5 (127) ◽  
pp. 105288-105291 ◽  
Author(s):  
PeiPei He ◽  
Shuanglong Feng ◽  
Shuangyi Liu ◽  
Qikun Li ◽  
Jiwei Qi ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Zno Nanowire ◽  
Uv Detector ◽  
Cvd Method ◽  
Catalyst Free ◽  
Uv Response ◽  
Nanowire Networks

An UV detector based on multi-channel three dimensional ZnO nanowire networks was fabricated via a catalyst-free CVD method.

Catalyst-free synthesis and cathodoluminescent properties of ZnO nanobranches on Si nanowire backbones

2008 ◽  
Vol 23 (12) ◽  
pp. 3403-3408 ◽  
Author(s):  
Kwang-Soo Son ◽  
Dong Hyun Lee ◽  
Jae-Woong Choung ◽  
Yong Bum Pyun ◽  
Won Il Park ◽  
...  
Keyword(s):  
Growth Temperature ◽  
Growth Parameters ◽  
Chemical Vapor ◽  
Nanowire Arrays ◽  
Zno Nanowire ◽  
Si Nanowires ◽  
Si Nanowire ◽  
Catalyst Free ◽  
Transmission Electron ◽  
Nanowire Networks

We report the catalyst-free synthesis of ZnO nanobranches on Si nanowires using metalorganic chemical vapor deposition. The formation of single-crystalline ZnO nanobranches on Si nanowire backbones has been confirmed by lattice resolved transmission electron microscopy. Depending on the growth parameters, especially the growth temperature, the morphology and size of the ZnO nanobranches evolved from nanothorn-shaped (at 350 °C) to nanoneedle-shaped structures (at 500 °C). When the growth temperature was further increased to 800 °C, thin ZnO nanowire branches grew out of the Si nanowire backbones coated with thin ZnO shells, whereas no ZnO branch was formed on bare Si nanowires due to limited nucleation. The growth behavior was further exploited to fabricate ZnO/Si nanowire networks by growing the ZnO nanowires selectively on laterally aligned Si–ZnO core-shell nanowire arrays. In addition, cathodoluminescent properties of ZnO nanobranches on Si nanowire backbones are discussed with respect to position and size.

scholarly journals ZnO Nanowire Networks as Photoanode Model Systems for Photoelectrochemical Applications

Nanomaterials ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 693 ◽  
Author(s):  
Liana Movsesyan ◽  
Albert Maijenburg ◽  
Noel Goethals ◽  
Wilfried Sigle ◽  
Anne Spende ◽  
...  
Keyword(s):  
Anatase Phase ◽  
Three Dimensional ◽  
Atomic Layer ◽  
Model Systems ◽  
Zno Nanowire ◽  
Chemical Corrosion ◽  
Tio2 Nanowire ◽  
Nanowire Network ◽  
Nanowire Networks ◽  
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.

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

Nanomaterials ◽  
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.

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

2016 ◽  
Vol 4 (5) ◽  
pp. 1603-1607 ◽  
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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