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Title: A Hierarchical Anodic Aluminum Oxide Template. Author: Hu Y, Wang X, Zhang M, Wang S, Li S, Chen G. Journal: Nano Lett; 2021 Jan 13; 21(1):250-257. PubMed ID: 33356295. Abstract: Anodic aluminum oxide (AAO) templates are widely used for the development of various functional nanomaterials due to their highly ordered and tunable porous structures. Here, we report a new hierarchical AAO (hAAO) template with the hexagonally ordered unit cells and the radially distributed nanochannels. It is formed by integrating the self-assembled polystyrene microsphere template into the AAO fabrication process and rationalized in terms of mechanical stress and electric-field-induced oxide dissolution. The back side of the hAAO template resembles a moth-eye-like nanoarray, which shows good hydrophobicity. A variety of radial nanopillar arrays and moth-eye-like nanoarrays are fabricated by a series of materials and synthesis techniques employing the hAAO template. These unique nanoarrays demonstrate many physicochemical properties that are distinct from those obtained from the conventional AAO template.[Abstract] [Full Text] [Related] [New Search]