2024-03-28T20:54:09Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/668992022-11-17T02:08:08Zhdl_2115_20045hdl_2115_139Formation of layered structure porous-type anodic alumina films locally with a solution flow-type micro-droplet cellSakairi, MasatoshiNishino, FumikaItzinger, Reginasolution flow-type micro-droplet cellporous-type aluminaanodizinglayered structurepore widening433A solution flow-type micro-droplet cellwith co-axial dual capillary tubes (Sf-MDC) was applied to formporous-type anodic alumina film with layered structure at selected areas on aluminum. The anodizing process with different repetition numbers, yielding different oxide layer numbers, was performed with the Sf-MDC. The investigation of cross sections of the formed oxide showed that the pore diameter widened at the boundary between layers. From a simulated anodizing process with the Sf-MDC, the reason for this modification of the pores was suggested to be intermittent anodizing with processes of drying up of the solution of the pores and widening at the bottom of the pores. Copyright (C) 2015 John Wiley & Sons, Ltd.Wiley-BlackwellJournal Articleapplication/pdfhttp://hdl.handle.net/2115/66899https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/66899/1/Sakairi-SIA48%288%29.pdf0142-2421Surface and interface analysis4889219252016-08enginfo:doi/10.1002/sia.5893This is the peer reviewed version of the following article: Surface and interface analysis, 48(8), August 2016, pp.921-925, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/sia.5893/abstract. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.author