scholarly journals Properties of Ni and Ni–Fe nanowires electrochemically deposited into a porous alumina template

2016 ◽  
Vol 7 ◽  
pp. 1709-1717 ◽  
Author(s):  
Alla I Vorobjova ◽  
Dmitry L Shimanovich ◽  
Kazimir I Yanushkevich ◽  
Sergej L Prischepa ◽  
Elena A Outkina
Keyword(s):  
Comparative Analysis ◽  
Aspect Ratio ◽  
Porous Alumina ◽  
Face Centered Cubic ◽  
Specific Magnetization ◽  
Alumina Template ◽  
Porous Alumina Template ◽  
Electrochemically Deposited ◽  
Face Centered ◽  
Ordered Porous

The comparative analysis of the electrochemical deposition of Ni and Ni–Fe nanowires (NWs) into ordered porous alumina templates is presented. The method developed allows for obtaining NWs of 50 ± 5 nm in diameter and 25 μm in length, i.e., with an aspect ratio of 500. XRD data demonstrate the polycrystalline nature of Ni and Ni–Fe in a face-centered cubic close-packed lattice. Both fabricated materials, Ni and Ni–Fe, have shown ferromagnetic properties. The specific magnetization value of Ni–Fe NWs in the alumina template is higher than that of the Ni sample and bulk Ni, also the Curie temperature of the Ni–Fe sample (790 K) is higher than that of the Ni sample one or bulk Ni.

Aspect ratio dependence of hysteresis property of high density Co wire array buried in porous alumina template

2004 ◽  
Vol 272-276 ◽  
pp. 1598-1599 ◽  
Author(s):  
S Shingubara ◽  
K Morimoto ◽  
M Nagayanagi ◽  
T Shimizu ◽  
O Yaegashi ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Wire Array ◽  
Porous Alumina ◽  
High Density ◽  
Alumina Template ◽  
Ratio Dependence ◽  
Porous Alumina Template

Preparation of Porous Alumina Template for Nanostructure Fabrication

2014 ◽  
Vol 895 ◽  
pp. 21-24
Author(s):  
Kuan Ying Kok ◽  
Inn Khuan Ng ◽  
Nur Ubaidah Saidin ◽  
Suhaila Hani Illias
Keyword(s):  
Porous Alumina ◽  
Formation Rate ◽  
Growth Conditions ◽  
Nanostructure Fabrication ◽  
Alumina Template ◽  
One Dimensional ◽  
Alumina Films ◽  
Porous Alumina Template ◽  
Ordered Porous ◽  
Anodisation Process

Porous alumina films are widely used as templates for fabricating one-dimensional (1-D) nanostructures such as nanowires or nanotubes. Using a two-step anodisation process, we have successfully optimized the growth conditions for fabricating highly ordered porous alumina films with pore diameters ranging from 20 to 150 nm, to be used as templates for 1-D nanostructure synthesis. The effects of the anodisation conditions on pore structure and the formation rate of the films were systematically studied. It was found that low electrolyte temperatures and agitations decreased the growth rate of the films but favored the process of pore ordering. Removal of oxide layer formed from first anodisation process and removal of barrier oxide at pore ends had an important bearing on pore morphology. Besides the stand-alone porous alumina films, we have also fabricated porous alumina films on rod-shaped Al substrates.

Properties of Ni and Ni–Fe nanowires electrochemically deposited into a porous alumina template

nano Online ◽  
2017 ◽  
Author(s):  
Alla Vorobjova ◽  
Dmitry Shimanovich ◽  
Kazimir Yanushkevich ◽  
Sergej Prischepa ◽  
Elena Outkina
Keyword(s):  
Porous Alumina ◽  
Alumina Template ◽  
Porous Alumina Template ◽  
Electrochemically Deposited

scholarly journals Preparation of Ni micropillar arrays with high aspect ratios using anodic porous alumina template and their application to molds for imprinting

RSC Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 2096-2102
Author(s):  
Takashi Yanagishita ◽  
Tomohiro Hayakawa ◽  
Toshiaki Kondo ◽  
Hideki Masuda
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Porous Alumina ◽  
Alumina Template ◽  
Porous Alumina Template ◽  
Aspect Ratios ◽  
Anodic Porous Alumina ◽  
Anodic Porous Alumina Template ◽  
Micropillar Array ◽  
Micropillar Arrays

Ni micropillar array with high aspect ratio prepared using anodic porous alumina.

Fabrication of High-Aspect-Ratio Prussian Blue Nanotubes Using a Porous Alumina Template

Nano Letters ◽  
2005 ◽  
Vol 5 (8) ◽  
pp. 1603-1606 ◽  
Author(s):  
Anders Johansson ◽  
Erika Widenkvist ◽  
Jun Lu ◽  
Mats Boman ◽  
Ulf Jansson
Keyword(s):  
Aspect Ratio ◽  
Prussian Blue ◽  
High Aspect Ratio ◽  
Porous Alumina ◽  
Alumina Template ◽  
Porous Alumina Template

Fabrication of a gecko-like hierarchical fibril array using a bonded porous alumina template

2007 ◽  
Vol 17 (10) ◽  
pp. N75-N81 ◽  
Author(s):  
Tanu Suryadi Kustandi ◽  
Victor Donald Samper ◽  
Wan Sing Ng ◽  
Ai Shing Chong ◽  
Han Gao
Keyword(s):  
Porous Alumina ◽  
Alumina Template ◽  
Porous Alumina Template

scholarly journals Self-ordered nanospike porous alumina fabricated under a new regime by an anodizing process in alkaline media

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mana Iwai ◽  
Tatsuya Kikuchi ◽  
Ryosuke O. Suzuki
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Porous Alumina ◽  
Three Dimensional ◽  
Alkaline Media ◽  
Alkaline Electrolyte ◽  
Subsequent Formation ◽  
Interpore Distance ◽  
Wide Range ◽  
Ordered Porous

AbstractHigh-aspect ratio ordered nanomaterial arrays exhibit several unique physicochemical and optical properties. Porous anodic aluminum oxide (AAO) is one of the most typical ordered porous structures and can be easily fabricated by applying an electrochemical anodizing process to Al. However, the dimensional and structural controllability of conventional porous AAOs is limited to a narrow range because there are only a few electrolytes that work in this process. Here, we provide a novel anodizing method using an alkaline electrolyte, sodium tetraborate (Na2B4O7), for the fabrication of a high-aspect ratio, self-ordered nanospike porous AAO structure. This self-ordered porous AAO structure possesses a wide range of the interpore distance under a new anodizing regime, and highly ordered porous AAO structures can be fabricated using pre-nanotexturing of Al. The vertical pore walls of porous AAOs have unique nanospikes measuring several tens of nanometers in periodicity, and we demonstrate that AAO can be used as a template for the fabrication of nanomaterials with a large surface area. We also reveal that stable anodizing without the occurrence of oxide burning and the subsequent formation of uniform self-ordered AAO structures can be achieved on complicated three-dimensional substrates.

Growth and characterization of high density stoichiometric SiO2dot arrays on Si through an anodic porous alumina template

2006 ◽  
Vol 17 (9) ◽  
pp. 2146-2151 ◽  
Author(s):  
M Kokonou ◽  
A G Nassiopoulou ◽  
K P Giannakopoulos ◽  
A Travlos ◽  
T Stoica ◽  
...  
Keyword(s):  
Porous Alumina ◽  
High Density ◽  
Alumina Template ◽  
Porous Alumina Template ◽  
Anodic Porous Alumina ◽  
Anodic Porous Alumina Template

Optical Properties of Cu-Co Alloy Nanowire Arrays in Porous Alumina Template

2009 ◽  
Vol 29 (1) ◽  
pp. 277-280 ◽  
Author(s):  
郑萌萌 Zheng Mengmeng ◽  
吴福全 Wu Fuquan ◽  
刘在国 Liu Zaiguo ◽  
张立春 Zhang Lichun ◽  
李清山 Li Qingshan ◽  
...  
Keyword(s):  
Optical Properties ◽  
Porous Alumina ◽  
Nanowire Arrays ◽  
Alumina Template ◽  
Porous Alumina Template
Sign in / Sign up

Export Citation Format

Share Document