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

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.

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

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

Piezoelectric PZT Semi-Ordered Nanotubes Arrays by Wetting of Porous Alumina Template

2008 ◽  
Author(s):  
Brian J. Butcher ◽  
Chad B. O’Neal
Keyword(s):  
Thin Film ◽  
Lead Zirconate Titanate ◽  
Piezoelectric Properties ◽  
Porous Alumina ◽  
Lead Zirconate ◽  
Alumina Template ◽  
Preliminary Step ◽  
Porous Alumina Template ◽  
Ceramic Nanotubes ◽  
Template Wetting

Piezoelectric nanotubes are applicable to many areas including sensors, actuators, and energy storage. Before these applications can be realized using nanoscale components, a study is needed to characterize the piezoelectric-properties of nanotube geometries versus the piezoelectric-properties of a thin-film of the same material (not shown here). The material used in this study is (PZT) lead-zirconate-titanate, PbZr0.5Ti0.48O3. In this work, 200nm diameter PZT structures are manufactured by a template wetting procedure. These ceramic nanotubes are brittle but hold up well inside the alumina template structure. Having an array of nanometer-sized piezoelectric-tubes has been hypothesized to give comparable results to that of thin-films of the same material. The research described in this paper is a preliminary step towards testing this hypothesis via characterization and later producing piezoelectric-nanoscale-sensors, which are both small and efficient.

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