Facile preparation of diverse alumina surface structures by anodization and superhydrophobic surfaces with tunable water droplet adhesion
2018; Elsevier BV; Volume: 779; Linguagem: Inglês
10.1016/j.jallcom.2018.11.222
ISSN1873-4669
AutoresShou‐Yi Li, Xiang-Gen Xiang, Bao‐Hong Ma, Xiao-Ding Meng,
Tópico(s)Optical Coatings and Gratings
ResumoHierarchical alumina superhydrophobic surfaces with a series of different morphologies were obtained by anodization method, and then modified with stearic acid (STA). The effects of anodization parameters including time and voltage on surface morphology and the wettability of surface were investigated in detail. The diverse alumina surface architectures including nanoporous, nanowire clusters and nanorods were obtained by the anodization parameter modulation via a self-assembly process. The results demonstrated that these structures were able to achieve to superhydrophobic. More interestingly, the superhydrophobic alumina surfaces shown a high contrast water droplet adhesion, which conferred with a higher water contact angle of ∼156° and a sliding angle as low as ∼2.1° as well as a strongly sticky water adhesion. However, this paper provides a simple and effective approach to fabricate the superhydrophobic surfaces with tunable water adhesion, which has an important for designing advanced functional materials for application.
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