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We report a very simple and novel approach to produce anodic TiO2 nanotube arrays with highly defined and ordered tube openings. It is based on carrying out anodization through a slowly soluble photoresist coating. This eliminates the formation of undesired initiation layers on the tube tops and protects them to a certain extent from etching by the electrolyte. magnified image (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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Albu et al. (2010) studied this question.
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