Birefringence in anisotropic porous nanostructures provides quantitative information on average porosity.

We investigated an electrochemical separation method for anodic aluminum oxide (AAO) films possessing thicker barrier layers by electrolysis in sodium chloride (NaCl) and ethylene glycol (EG) solution subsequent fabrication of through-hole AAO membranes immersion phosphoric acid (H 3 PO 4 ) solution. The with different layer thicknesses were formed on the surface anodizing sulfuric, oxalic, H s...

Porous alumina films formed by aluminum anodic oxidation have been intensively studied to use them as molds to form nanowires or dots. Recently we established the formation of porous alumina on solid substrates such as Si, and found a formation of an ordered aluminum hexagonal dot array after finishing of anodic oxidation on a SiO2 substrate. We investigated AFM nanoindentation to control the i...

In this study, high energy conversion efficient dye-sensitized solar cells (DSSCs) were successfully fabricated by attaching a double anti-reflection (AR) layer, which is composed of a subwavelength moth-eye structured polymethyl methacrylate (PMMA) film and a polydimethylsiloxane (PDMS) film. An efficiency of up to 6.79% was achieved. The moth-eye structured PMMA film was fabricated by using a...

An anodic aluminum oxide (AAO) template was formed by a two-step anodization process. Carbon nanotubes (CNTs) were successfully synthesized along with AAO pores and the diameters of CNTs equaled those of AAO pores. The lengths of CNTs during a chemical vapor deposition synthesized process on the AAO template were effectively controlled. These AAO-CNTs exhibit excellent field emission with a low...

Penetration of a nanochannel mask by 190keV Co + ions is tested for the purpose of achieving laterally modulated ion implantation into a SiO2 thin film on a Si substrate. A 2Dnanoporous membrane of anodic aluminum oxide (AAO) is chosen as the mask. Criteria and challenges for designing the mask are presented. Implantation experiments through a mask with pore diameter of 125 nm and inter-pore di...