Penetrating the oxide barrier in situ and separating freestanding porous anodic alumina films in one step.

The fabrication of ordered nanoporous metal films based on high field anodic alumina and their selected transmission enhancement.

A two-step high field anodization and a controllable barrier layer removing process have been used for the fabrication of porous anodic alumina (PAA) with different morphologies. Based on the PAAs, porous noble metal films with widely tunable pore size and inter-pore distance have been realized by a simple sputtering method. Their morphology and optical properties were studied with a field-emis...

Synthesis and Characterization of Silver and Gold Nano-Structures on Chitosan-Porous Anodic Alumina Nano-Composite

This study was designed to probe the fabrication of unique silver and gold nano-structures engaging a self-designed chitosan-porous anodic alumina nano-composite as a template. Porous anodic alumina has been manufactured by di-step aluminum anodization in an oxalic acid electrolytic bath. The surface properties of porous anodic alumina were reinforced by chitosan neutralized in sodium hydro...

Fabrication of Porous Al2O3 and TiO2 Thin film hybrid composite using Atomic Layer Deposition and Properties Study

Atomic layer deposition (ALD) has been used in advanced applications where thin layers of materials with precise thickness down to the nanometer scale are needed. Using anodic oxidation, we prepared the porous alumina. Anodic oxidation was carried out in 5 C 0.3M oxalic acid with anodizing voltages (~ 40 V) and two step anodization method. SEM shows that, these porous anodic oxides are well ali...

Highly ordered diamond and hybrid triangle-diamond patterns in porous anodic alumina thin films

Ultra-High Density Single Nanometer-Scale Anodic Alumina Nanofibers Fabricated by Pyrophosphoric Acid Anodizing

Anodic oxide fabricated by anodizing has been widely used for nanostructural engineering, but the nanomorphology is limited to only two oxides: anodic barrier and porous oxides. Therefore, the discovery of an additional anodic oxide with a unique nanofeature would expand the applicability of anodizing. Here we demonstrate the fabrication of a third-generation anodic oxide, specifically, anodic ...