Branchy alumina nanotubes

Zou, Jianping; Pu, Lin; Bao, Ximao; Feng, Duan
February 2002
Applied Physics Letters;2/11/2002, Vol. 80 Issue 6, p1079
Academic Journal
Branchy alumina nanotubes (bANTs) have been shown to exist in aluminum oxide. Electron-beam evaporated 400 nm Al film on Si substrate is stepwise anodized in dilute sulfuric acid under the constant dc voltage 40 V at 10.0 °C. This electrochemical-anodizing route resulted in the formation of individual bANTs. Transmission electron microscopy showed that the length of the bANTs was around 450 nm, and the inner diameter was around 10–20 nm. We deduced that the bANTs, the completely detached multibranchy cells of anodic porous alumina (APA) film, should be evolved from the stagnant cells of the APA mother film. The bANTs may be used as templates in fabrication of individual branchy nanoscale cables, jacks, and heterojunctions. The proposed formation mechanisms of the bANTs and the stagnant cells should give some insights into the long-standing problem of APA film, i.e., the self-ordering mechanism of the cells arrangement in porous anodization of aluminum. © 2002 American Institute of Physics.


Related Articles

  • Tubular alumina formed by anodization in the meniscal region. Lazarouk, S. K.; Sasinovich, D. A.; Borisenko, V. E.; Muravski, A.; Chigrinov, V.; Kwok, H. S. // Journal of Applied Physics;Feb2010, Vol. 107 Issue 3, p033527 

    A method to fabricate tubular nanoporous alumina layers by anodization of aluminum at current densities up to 1400 mA/cm2 and anodization rates up to 70 μm/min has been developed. It implies anodization in the meniscal region of the sample dipping into an electrolyte. The formed porous...

  • Room-temperature formation of erbium-related luminescent centers in anodic alumina. Lazarouk, S. K.; Mudryi, A. V.; Borisenko, V. E. // Applied Physics Letters;10/19/1998, Vol. 73 Issue 16 

    Luminescent Er-doped Al[sub 2]O[sub 3] films have been fabricated at room temperature by a technique including magnetron deposition of Er-doped Al film on a silicon substrate and its subsequent electrochemical anodization. The films demonstrate strong Er-related photoluminescence at about 1.53...

  • Alumina nanotubes: preparation and textural, structural and morphological characterization. Cristina Diniz; Karla Balzuweit; Nelcy Mohallem // Journal of Nanoparticle Research;Apr2007, Vol. 9 Issue 2, p293 

    Abstract??Alumina nanotube was synthesized by hydrolysis of aluminum isopropoxide followed by gelation and drying under hypercritical condition. The influence of temperature on the structural, textural, and morphological properties of the material was studied by powder X-ray diffraction,...

  • Carbon Nanotube/Alumina/Polyethersulfone Hybrid Hollow Fiber Membranes with Enhanced Mechanical and Anti-Fouling Properties. Yi Feng; Kun Wang; Davies, Chris H. J.; Huanting Wang // Nanomaterials (2079-4991);2015, Vol. 5 Issue 3, p1366 

    Carbon nanotubes (CNTs) were incorporated into alumina/polyethersulfone hollow fibre membranes to enhance the mechanical property and the efficiency of water treatment. Results show that the incorporation of CNTs can greatly limit the formation of large surface pores, decrease the void size in...

  • Transfer of nanoporous pattern of anodic porous alumina into Si substrate. Asoh, Hidetaka; Matsuo, Mamoru; Yoshihama, Megumi; Ono, Sachiko // Applied Physics Letters;11/24/2003, Vol. 83 Issue 21, p4408 

    Nanohole arrays in a Si substrate with a self-ordered configuration having a 100 nm hole periodicity were fabricated by the pattern transfer of the hole configuration of anodic porous alumina. The self-ordered anodic porous alumina used as a mask was directly prepared by anodizing an aluminum...

  • Template-based carbon nanotubes and their application to a field emitter. Jeong, Soo-Hwan; Hwang, Hee-Young; Lee, Kun-Hong; Jeong, Yongsoo // Applied Physics Letters;4/2/2001, Vol. 78 Issue 14, p2052 

    Anodic aluminum oxide (AAO) templates were fabricated by anodizing Al films. After the Co catalyst had been electrochemically deposited into the bottom of the AAO template, carbon nanotubes (CNTs) were grown by the catalytic pyrolysis of C[sub 2]H[sub 2] at 650 °C. Overgrowth of CNTs on the...

  • Fabrication of an aluminum-porous alumina sensor by in situ monitoring anodization of thin aluminum films. Tassis, George; Christoulaki, Anastasia; Spiliopoulos, Nikolaos; Anastassopoulos, Dimitrios L.; Vradis, Alexandros A.; Mytilineou, Eugenia // Journal of Applied Physics;2015, Vol. 118 Issue 10, p103108-1 

    The aim of the present work is to optimize a well-known plasmon-based aluminum/porous anodic alumina sensor. This kind of sensors is produced by partial electrochemical anodization of an aluminum film, while the remaining, non-anodized metallic film is used for supporting the propagation of...

  • Superplastic Behavior of Alumina Composites Mediated by Carbon Nanotubes. Xiaobing Zhou; Lei Li; Lu Shen; Jie Zhou; Junwei Zhang; Mukherjee, Amiya K.; Changshu Xiang; Huiping Tang; Qing Huang // Nano-Micro Letters;2013, Vol. 5 Issue 3, p174 

    The high temperature creep behavior of carbon nanotube (CNT)/alumina was mediated by the surface chemical functionalization used for synthesis of composite powders. Non-covalent functionalized carbon nanotubes make composites ductile, but covalent approach leads composites that are...

  • Electron microscopy of barium strontium titanate nanostructures in the aluminum oxide matrix. Zhigalina, O. M.; Vorotilov, K. A.; Kuskova, A. N.; Sigov, A. S. // Physics of the Solid State;Jul2009, Vol. 51 Issue 7, p1485 

    Electron microscopy has revealed the mechanism of formation of barium strontium titanate nanostructures during crystallization in the bulk of pores of the aluminum matrix. The nanostructures have the form of nanotubes or nanocolumns 100–200 nm in diameter and a few microns long, which are...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics