Interference colors of TiO2 nanotube arrays grown by anodic oxidation

Jong Yun Moon, Marianna Kemell, Risto Punkkinen, Hannu Pekka Hedman, Byungki Park, Arho Suominen, Lauri Heikkilä, Hong Kim, Aulis Tuominen

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)


The study describes the interference color of anodic TiO2 nanotube arrays on titanium foil. TiO2 nanotube arrays are prepared by oxidizing titanium foil in an aqueous electrolyte solution of hydrofluoric acid (HF, 0.5 wt.%). The morphologies of the oxide film are characterized by FESEM. The empirical color properties are obtained using the L*a*b* system. The different interference colors of oxidized Ti samples are obtained depending on the anodization time. The anodization time clearly indicates a strong effect on the reflectance at the visible wavelength region, thus confirming the observed color differences. Consequently, the interference colors can be controlled by the anodization time. By observing the coloration of Ti during the anodization, the interference colors can be utilized to identify the thickness of oxide layer and the formation of nanotubes on Ti sheet.

Original languageEnglish
Pages (from-to)370-374
JournalAdvanced Materials Research
Publication statusPublished - 1 Jan 2014
MoE publication typeA1 Journal article-refereed
Event2012 International Conference on Advanced Material and Manufacturing Science, ICAMMS 2012 - Beijing, China
Duration: 20 Dec 201221 Dec 2012


  • Anodization
  • Interference color
  • Nanotube arrays
  • Titanium


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