NIMTE OpenIR  > 2018专题
Study of adhesion and friction drag on a rough hydrophobic surface: Sandblasted aluminum
Li, Longyang; Zhu, Jingfang; Zhi, Shudi; Liu, Eryong; Wang, Gang; Zeng, Zhixiang; Zhao, Wenjie; Xue, Qunji
2018
Source PublicationPHYSICS OF FLUIDS
Volume30Issue:7
AbstractRoughness is a crucial prerequisite for fabricating superhydrophobic surfaces. However, the enormous economic cost of fabricating rough surfaces seriously limits the industrial application of superhydrophobic surfaces. To overcome this drawback, we present herein a simple, low cost, user-friendly, and rapid method to fabricate rough surfaces with micro-and nanostructured features. By modifying the sandblasting pressure, we fabricated aluminum surfaces of varying roughness, which we then decorated with polydimethylsiloxane to reduce the surface energy. The contact angle, slip velocity, slip length, and drag-reduction ratio all increase with increasing sandblasting pressure, and the maximum contact angle of a droplet, the slip velocity, the length, and the drag-reduction ratio are 151.74 +/- 1 degrees, 0.1617 m/s, 0.04276 mm, and 19.2%, respectively, for a sandblasting pressure of 0.8 MPa. The adhesive force of the samples decreases with increasing sandblasting pressure to a minimum of 0.096 mN. The process by which trapped air escapes from the sample surface is visualized by using fluent software, and the results show that the low adhesive and low friction properties of the superhydrophobic surface, which are due to air being trapped in the space between protrusions, may effectively prevent water frommoving into these spaces. Published by AIP Publishing.
KeywordAnti-frosting Performance Superhydrophobic Surfaces Magnesium Alloy Reduction Resistance Water Flow Wettability Fabrication Cylinder
Subject AreaPhysics
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/17333
Collection2018专题
Recommended Citation
GB/T 7714
Li, Longyang,Zhu, Jingfang,Zhi, Shudi,et al. Study of adhesion and friction drag on a rough hydrophobic surface: Sandblasted aluminum[J]. PHYSICS OF FLUIDS,2018,30(7).
APA Li, Longyang.,Zhu, Jingfang.,Zhi, Shudi.,Liu, Eryong.,Wang, Gang.,...&Xue, Qunji.(2018).Study of adhesion and friction drag on a rough hydrophobic surface: Sandblasted aluminum.PHYSICS OF FLUIDS,30(7).
MLA Li, Longyang,et al."Study of adhesion and friction drag on a rough hydrophobic surface: Sandblasted aluminum".PHYSICS OF FLUIDS 30.7(2018).
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