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  • Release time: 2018 - 03 - 12
    Ultrathin AAO templates have self-organized honeycomb-like nanopores, and they are usually from several ten nanometers to several hundred nanometers in thickness.Ultrathin AAO templates have been widely used for fabrication of large-scale ordered arrays of surface nanostructures such as nanodots and nanoholes on the surface of substrates. Pores of ultrathin AAO template are uniform in diameter and highly ordered in a short-range. In addition, the material (Al2O3) is transparent in the near-infrared and visible spectrum, and is electrically insulated. Compared to other technology for making ord...
    Ultrathin AAO templates have self-organized honeycomb-like nanopores, and they are usually from several ten nanometers to several hundred nanometers in thickness.Ultrathin AAO templates have been widely used for fabrication of large-scale ordered arrays of surface nanostructures such as nanodots and nanoholes on the surface of substrates. Pores of ultrathin AAO template are uniform in diameter and highly ordered in a short-range. In addition, the material (Al2O3) is transparent in the near-infrared and visible spectrum, and is electrically insulated. Compared to other technology for making ord...
  • Release time: 2018 - 03 - 13
    A new type of AAO product (V-shape AAO) is developed by Topmembranes Technology. Compared to other anodic alumina membranes products, this profile of type of AAO is precisely tailored by the synergistic control of anodizing time, etching time and cyclic times, resulting in a unique structure for a wide range of applications.For more applications of V-shape AAO, please refer to: Adv. Mater. 2014, 26, 2805;ACS Nano, 2015, 9, 10287;Adv. Funct. Mater. 2017, 27, 1604720;Nanoscale Research Letters 2013, 8,268;J. Phys. Chem. C 2017, 121, 9757; Nano Energy, 2016, 22, 539; ACS Nano 2017, 11, 5113. ...
  • Release time: 2018 - 03 - 13
    AAO on Al substrate has honeycomb-like structure (shown in Fig. 1), composed with hexagon column of Al2O3, with a circular pore in the center. At the end of the pore, there is a half-sphere shape barrier layer oxide layer in contact with aluminum. The porous oxide film contains mutually parallel cylindrical pores extending from the barrier oxide layer to the film surface. AAO on Al substrate is the simplest product in AAO family, which can be fabricated into large area with a high success rate. Fig. 2 shows a typical picture of the AAO template.Fig. 1. Schematic of AAO on Al substrate.  F...
  • Release time: 2018 - 03 - 13
    Isotropic AAO templates, often referring to thicker AAO to be different from ultrathin AAO membrane, are widely used for a number of different fields. Topmembranes technology is specialized to make high quality isotropic AAO templates, with highly uniform and regular pore on both sides of the surfaces. The pores are arranged hexagonally within the single grains of the aluminum. The translucent nature of AAO is appealing to applications in biomedical field.Fig. 1. The structure diagram of isotropic AAO templates.Fig. 2. Typical SEM images of both sides of isotropic AAO template. Fig. 3. Ty...
  • Release time: 2018 - 03 - 13
    An sprayer, or airbrush, is an ideal tool for applying a thin layer of material on the substrate.We sell this for your convenience, the price of all set is less than $50. Depending on the amount of your purchase of other product, this airbrush can be free for your use.
Contact information

Telephone : +86 0755-2350 5289

Mail : service@topmembranes.com

Web : http://www.topmembranes.com

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Address : Tingwei Industrial Park, 6 Liufang Rd., Baoan District

Product Name

AAO on Al substrate

Date: 2018-03-13
Author: 189

AAO on Al substrate has honeycomb-like structure (shown in Fig. 1), composed with hexagon column of Al2O3, with a circular pore in the center. At the end of the pore, there is a half-sphere shape barrier layer oxide layer in contact with aluminum. The porous oxide film contains mutually parallel cylindrical pores extending from the barrier oxide layer to the film surface. AAO on Al substrate is the simplest product in AAO family, which can be fabricated into large area with a high success rate. Fig. 2 shows a typical picture of the AAO template.


AAO on Al substrate Product description

Fig. 1. Schematic of AAO on Al substrate.


 AAO on Al substrate Product description

Fig. 2. A large area AAO on Al substrate.


The pore diameter can range from 10 nm to several hundred nanometers, and the depth (or thickness of AAO) can be controlled continuously from several ten nanometers, up to one hundred microns. The pores of AAO on Al substrate is short-range ordered over a large area, which can be used as a master to transfer porous structures into other materials. The high density and high aspect ratio structure, provides a 3D nanostructure with a large surface-to-volume ratio, leading to high affinity of organic molecules. It has great potential in optical detection application. In addition, AAO on Al substrate can be used as a mask to electrically deposit nanowire with AC current.


AAO on Al substrate Product description

Fig. 3. SEM images of some typical AAO on Al substrate. 

AAO on Al substrate Product description

Fig. 4. A small area AAO on Al substrate.


AAO on Al substrate has highly ordered structure at one side (front side), with a barrier layer and aluminum as the support structure. The front side is facing to the logo in the package. Thanks to the support of aluminum substrate, it has a higher strength compared to other AAO products, which can be clamped by tweezers or cleaned with ultrasonic cleaner shortly. Again, don’t touch the surface with bare hand to avoid any dust or grease being introduced onto the surface.


AAO on Al substrate Product description

Fig.5 The orientation of the AAO on Al substrate in the package.


AAO can be removed by 5% phosphate acid slowly, or by 5wt% NaOH quickly. You can image the structure with either SEM or AFM. Due to the non-conductive nature, the surface need to be sputtered with gold or carbon before SEM test. However, sputtering gold or carbon is not necessary if the thickness of AAO is less than 1μm. 

The sample can be twisted into 90o to observe the cross section at the area cracked due to twisting. But this method is not suitable for AAO template whose pore wall thickness<20nm or='' pore='' depth=''>10μm.


AAO on Al substrate Product description

Fig.6 The structure of a typical AAO on Al substrate


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