The thickness of the polished aluminum sheet is 150um, 200um, and 300um. Electrochemical polishing is adopted, and the thickness of 200um is recommended for better effect.

Ultra-thin AAO template can be transplanted to any substrate surface, used as a mask for etching to form nanohole arrays, or deposition masks to form nanodot arrays, laboratory micrographs; nanoimprinting, etc. Substrate selection: At present, it has been realized on Si, SiO2/Si, ITO, glass, Cu, HOPG and other substrates. The substrate is generally prepared and processed by the customer (area S≥1cm2, the customer provides the substrate).

The vertical channel of the AAO template is transformed into a channel structure with a large diameter at the upper end and a small diameter at the lower end. This structure is particularly suitable for surface nanostructure construction, such as nanoimprinting, and V-shaped channels are significantly better than vertical channels during demolding.

By removing the barrier layer of the single-pass AAO template, a double-pass AAO template can be obtained. The single-pass AAO template is an opaque sample with a colored surface due to the support of the aluminum substrate, while the general double-pass AAO template is translucent. Below are AAO double pass membranes in different sizes.

The AAO template part in the single-pass AAO inorganic membrane has a honeycomb structure, that is, it is composed of many hexagonal cylindrical oxide primary cells (units), and each such unit has a small circular hole in the middle. At the lower end of the hole there is a hemispherical barrier layer between the oxide layer and the metal.