Anodic Aluminum Oxide Template (aao) Preparation And Application Of Research

Anodic Aluminum Oxide (AAO) is a kind of transparent template with high-ordered nano pores. The diameter of the pores is controllable between 5nm and 200nm.In this paper, we prepared AAO template with two methods— one-step anodization and two-step anodization, and made a compare between two methods. The influences of experiments conditions, such as the voltage, the kinds and concentration of the electrolyte, temperature, anneal etc., on the AAO template prepared was studied. The phases in the anodizing were discussed on the base of current-time chart.A number of fibre tissues were found in the barrier layer of anodic aluminum oxide template when we observed the microstructure, especially the side face of AAO template by the scanning electronic microscope (SEM). These fibre tissues were connected with the nano-pores of AAO template, indicating that the nano-pores were formed from these fiexural winding fibre tissues by self-organization through the influence of electric field in the acid environment. The whole template was the ordered and close pileup of the fibre.A method was designed to conquer difficulty and reduce errors of measuring thickness of the barrier layer.We prepared silver quantum dots with AAO template by the property of AAO template. In this letter, the method of preparing quantum dots with AAO template is introduced, which is not only simple but also can be yielded at room temperature at large scale. Moreover, the quantum dots prepared using this method are highly ordered quantum dots array and are controllable in size, which is very difficult for other methods. This method provided a new and effective way for making quantum dots and application of nano materials.The studying by this article makes important sence to preparing and application of nano structure and nano marerials.