Bioinspired enamel-like oriented minerals on general surfaces: towards improved mechanical properties

2019 ◽  
Vol 7 (34) ◽  
pp. 5237-5244 ◽  
Author(s):  
Zhuoxin Chen ◽  
Zhangshu Miao ◽  
Pan Zhang ◽  
Hong Xiao ◽  
Huan Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Anodic Alumina ◽  
System P ◽  
Anodic Alumina Oxide ◽  
Alumina Oxide ◽  
Gel System

Enamel-like oriented hydroxyapatite minerals were obtained on general surfaces by a biomimetic, anodic alumina oxide (AAO)-assisted, double-layered gel system.

Synthesis and Optical Properties of Metal Nanoparticles Embedded in Porous Anodic Alumina Oxide

2005 ◽  
Vol 475-479 ◽  
pp. 4093-4096
Author(s):  
Rui Long Zong ◽  
Ji Zhou ◽  
Shi Kao Shi ◽  
Long Tu Li
Keyword(s):  
Metal Nanoparticles ◽  
Metallic Nanoparticles ◽  
Composite Films ◽  
Alternate Current ◽  
Electrochemical Process ◽  
Anodic Alumina ◽  
Noble Metal Nanoparticles ◽  
Anodic Alumina Oxide ◽  
Alumina Oxide ◽  
Transparent Composite

We have improved an electrochemical process in which the alternate current (AC) electrodeposition combined with the etching of substrate to prepare transparent metallic nanoparticles and anodic alumina oxide (AAO) composite films. The new process greatly simplifies the direct current (DC) electrodeposition process to get transparent composite films. Moreover, the electrocrystallization mechanism has been analyzed. The Ag, Cu and Ag-Cu co-deposited nanoparticles/AAO films have distinct absorption peaks, which can be ascribed to the surface plasmon resonance (SPR) of these noble metal nanoparticles.

Anodic Alumina Oxide Template with Branched Structure Formed in Phosphoric Acid

2008 ◽  
Vol 373-374 ◽  
pp. 252-255 ◽  
Author(s):  
Hui Wang ◽  
H.W. Wang ◽  
P. Zeng
Keyword(s):  
Phosphoric Acid ◽  
Current Density ◽  
Anodic Alumina ◽  
Large Size ◽  
Atomic Force ◽  
Initial Stage ◽  
Anodic Alumina Oxide ◽  
Alumina Oxide ◽  
Order Degree ◽  
Branched Structure

Anodic alumina oxide (AAO) templates with multi-branched structure were fabricated in a phosphoric acid. Atomic force microscope (AFM) was utilized to investigate the unstable growth of porous oxide film in initial stage. The morphologies of cross-section of AAO templates at different current density were also studied with FESEM. The results show that the acquired AAO templates are of multi-branched structure with large size. The diameter of pores on outer surface ranges from 150 to 220 nm, and the width of branches from 100-120 nm. This structure can be due to the unstable growth of AAO film in initial stage. Besides, the structure of AAO template is sensitive to the current density and the order degree decreases with the increase of current density: at 1.0A/dm2, most of tubes are not straight and some divided into two branches; at 2.0A/dm2, all tubes grow disorderly and form net-like structure. In this electrolyte, different types of structure of AAO templates can be acquired by adjusting current density, which may be used for the synthesis of new types of nanowires with improved mechanical properties.

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