An Injection Therapy for Pruritus Ani.

Masuda, Y.; Masuda, Kohji

doi:10.3862/jcoloproctology.48.10_1107

Cited by 1 publication

(1 citation statement)

References 5 publications

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“…Nanotubular anodic titanium oxide (ATO) with a high aspect ratio have been considered to be a worthy successor to AAO since it exhibits similar highly regular nanostructures in a selfassembled manner. [5][6][7][8][9][10] Because many theories on the principles of the fabrication of highly ordered AAO have been well established for number of years, [20][21][22][23][24][25] their knowledge should be very useful in obtaining a deeper understanding of the anodization process in the fabrication of ATO. The influence of anodization time on the length of the nanotubes and the relationship between the interpore distance and the applied potential within certain ranges have been studied to this end.…”

Section: Introductionmentioning

confidence: 99%

Thickness Dependence of Size and Arrangement in Anodic TiO₂Nanotubes

Kim¹,

Lee²,

Choi³

2011

Bulletin of the Korean Chemical Society

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The degree of self-assembly and the size variation of nanotubular structures in anodic titanium oxide prepared by the anodization of titanium in ethylene glycol containing 0.25 wt % NH4F at 40 V were investigated as a function of anodization time. We found that the degree of self-assembly and the size of the nanotubes were strongly dependent on thickness deviation and thus indirectly on anodization time, as the thickness deviation was caused by the dissolution of the topmost tubular structures at local areas during long anodization. A large deviation in thickness led to a large deviation in the size and number of nanotubes per unit area. The dissolution primarily occurred at the bottoms of the nanotubes (Dbottom) in the initial stage of anodization (up to 6 h), which led to the growth of nanotubes. Dissolution at the tops (Dtop) was accompanied by Dbottom after the formed structures contacted the electrolyte after 12 h, generating the thickness deviation. After extremely long anodization (here, 70 h), Dtop was the dominant mode due to increase in pH, meaning that there was insufficient driving force to overcome the size distribution of nanotubes at the bottom. Thus, the nanotube array became disorder in this regime.

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