Light emission from silicon-based porous anodic alumina formed in 0.5 M oxalic acid

2003 ◽  
Vol 94 (4) ◽  
pp. 2407-2410 ◽  
Author(s):  
G. S. Huang ◽  
X. L. Wu ◽  
Y. Xie ◽  
X. F. Shao ◽  
S. H. Wang
Keyword(s):  
Oxalic Acid ◽  
Light Emission ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Silicon Based

scholarly journals A Novel Method for Fabricating Double Layers Porous Anodic Alumina in Phosphoric/Oxalic Acid Solution and Oxalic Acid Solution

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Yanfang Xu ◽  
Xiaojiu Li ◽  
Hao Liu ◽  
Jie Xu
Keyword(s):  
Oxalic Acid ◽  
Acid Solution ◽  
Oxalic Acid Solution ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Double Layers ◽  
Pore Density ◽  
Interpore Distance ◽  
Small Pore ◽  
Novel Method

A novel method for fabricating ordered double layers porous anodic alumina (DL-PAA) with controllable nanopore size was presented. Highly ordered large pore layer with interpore distance of 480 nm was fabricated in phosphoric acid solution with oxalic acid addition at the potential of 195 V and the small pore layer was fabricated in oxalic acid solution at the potential from 60 to 100 V. Experimental results show that the thickness of large pore layer is linearly correlative with anodizing time, and pore diameter is linearly correlative with pore widening time. When the anodizing potential in oxalic acid solution was adjusted from 60 to 100 V, the small pore layers with continuously tunable interpore distance from 142 to 241 nm and pore density from1.94×109to4.89×109 cm−2were obtained. And the interpore distance and the pore density of small pore layers are closely correlative with the anodizing potential. The fabricated DL-PAA templates can be widely utilized for fabrication of ordered nanomaterials, such as superhydrophobic or gecko-inspired adhesive materials and metal or semiconductor nanowires.

The effects of electropolishing on the nanochannel ordering of the porous anodic alumina prepared in oxalic acid

2008 ◽  
Vol 13 (2) ◽  
pp. 321-332 ◽  
Author(s):  
Abdur Rauf ◽  
Mazhar Mehmood ◽  
Muhammad Asim Rasheed ◽  
Muhammad Aslam
Keyword(s):  
Oxalic Acid ◽  
Anodic Alumina ◽  
Porous Anodic Alumina

Fabrication of highly ordered porous anodic alumina films in 0.75 M oxalic acid solution without using nanoimprinting

2019 ◽  
Vol 111 ◽  
pp. 24-33 ◽  
Author(s):  
Wenqiang Huang ◽  
Mengshi Yu ◽  
Shikai Cao ◽  
Lizhen Wu ◽  
Xiaoping Shen ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Acid Solution ◽  
Oxalic Acid Solution ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Alumina Films ◽  
Ordered Porous

On the origin of light emission from porous anodic alumina formed in sulfuric acid

2006 ◽  
Vol 137 (11) ◽  
pp. 621-624 ◽  
Author(s):  
G.S. Huang ◽  
X.L. Wu ◽  
G.G. Siu ◽  
Paul K. Chu
Keyword(s):  
Sulfuric Acid ◽  
Light Emission ◽  
Anodic Alumina ◽  
Porous Anodic Alumina

Effects of ordering quality of the pores on the photoluminescence of porous anodic alumina prepared in oxalic acid

2010 ◽  
Vol 130 (5) ◽  
pp. 792-800 ◽  
Author(s):  
Abdur Rauf ◽  
Mazhar Mehmood ◽  
Mushtaq Ahmed ◽  
Mujtaba ul Hasan ◽  
Muhammad Aslam
Keyword(s):  
Oxalic Acid ◽  
Anodic Alumina ◽  
Porous Anodic Alumina

Effect of Concentration of Oxalic Acid on the Synthesis of Porous Anodic Alumina (PAA) on Aluminum Alloy AA6061

2016 ◽  
Vol 857 ◽  
pp. 281-285
Author(s):  
Chun Hong Voon ◽  
Bee Ying Lim ◽  
K.L. Foo ◽  
Uda Hashim ◽  
Sung Ting Sam ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Oxalic Acid ◽  
Pore Size ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Edx Analysis ◽  
Interpore Distance ◽  
Ordered Porous

In this study, porous anodic alumina was formed by anodizing of aluminum alloy AA6061 in oxalic acid with concentration ranged from 0.1 M to 1.0 M respectively. AA6061 alloys were anodized at 40 V and 25°C for 60 minutes. FESEM images show that the uniformity of the pores arrangement of porous anodic alumina depends significantly on the concentration of oxalic acid. Well-ordered porous anodic alumina was formed in oxalic acid of 0.3 M, 0.5 M and 0.7 M while disordered porous anodic alumina were formed when the oxalic acid of 0.1 M and 1.0 M were used as electrolytes. EDX analysis revealed that the only peaks corresponding to aluminum and oxygen were detected. Pore size was found to increase with the concentration of oxalic acid while the interpore distance remained almost unchanged although the concentration of oxalic acid increased from 0.1 M to 0.7 M. Atypical anodic alumina without pores arrangement was formed when 1.0 M oxalic acid was used for anodizing.

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