Regensburg 2019 – scientific programme

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O: Fachverband Oberflächenphysik

O 41: Poster Tuesday: Nanostructures

O 41.7: Poster

Tuesday, April 2, 2019, 18:00–20:00, Poster D

Wrinkle-free centimeter-scale ultrathin alumina membranes on arbitrary substrates prepared by fast surface-energy-assisted drying — •Huanming Zhang, Min Zhou, Yang Xu, Rui Xu, Yi Wang, Zhiqiang Zeng, and Yong Lei — Institute für Physics & IMN MacroNano (ZIK), Technische Universität Ilmenau, 98693 Ilmenau

Ordered nanostructures always perform better than the disordered counterpart in many fields. Ultrathin Anodic Aluminum Oxide (AAO) membrane (UTAM) -directed fabrication is a promising technology to prepare ordered nanostructure. To transfer UTAM onto a target substrate, hydrophilic treatment or organic solvent wetting on substrate is necessary, Otherwise, a significant number of wrinkles will be generated in UTAM, and its uniformity and quality is damaged. However, widely used hydrophilic treatments, such as Oxygen plasma and Piranha solution, and organic solvent wetting are not applicable to some substrates. Moreover, the effect of the hydrophilic treatment is temporary and will be lost with time. Herein, we propose a convenient and practical technique, assisted by surface energy, to transfer UTAM onto arbitrary substrates with no observable wrinkle. Compared with surface treatments and organic solvent wetting, our method is rapid, simple, cheap, convenient and safe. In addition, the reasons behind crumpled UTAM was probed into.