Fabrication of cerium oxide films with thickness and hydrophobicity gradients

被引：11

作者：

Zhu, Dapeng ^{[1
,2
]}

Hu, Chenglong ^{[1
,2
]}

Zhao, Rongzhi ^{[1
,2
]}

Tan, Xiangyang ^{[1
]}

Li, Yixing ^{[1
]}

Mandic, Vilko ^{[4
]}

Shi, Zhen ^{[2
,3
]}

Zhang, Xuefeng ^{[1
,2
]}

机构：

[1] Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, MOE, Shenyang 110819, Peoples R China

[2] Hangzhou Dianzi Univ, Inst Adv Magnet Mat, Coll Mat & Environm Engn, Hangzhou 310012, Peoples R China

[3] Chinese Acad Sci, Suzhou Inst Nanotech & Nanob, Key Lab Nanodevices & Applicat, Suzhou 215123, Peoples R China

[4] Univ Zagreb, Fac Chem Engn & Technol, Dept Inorgan Chem Technol & Nonmet, Marulicev trg 20, Zagreb 10000, Croatia

来源：

SURFACE & COATINGS TECHNOLOGY | 2022年 / 430卷

基金：

中国国家自然科学基金;

关键词：

Cerium oxide films; Hydrophobicity gradient; Thickness; Roughness; OBLIQUE ANGLE DEPOSITION; SURFACE FREE-ENERGY; THIN-FILMS; COATINGS; MICROSTRUCTURE; WETTABILITY; LAYER;

D O I：

10.1016/j.surfcoat.2021.127985

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Versatile surfaces with hydrophobicity gradients have attracted intensive attention because of their tunable wettability. Here, cerium oxide films are prepared on tilted substrates by magnetron sputtering, the induced thickness gradient strongly influences the structural, morphological and wetting properties. It is found that the surface hydrophobicity is positively proportional to the root-mean-square (RMS) roughness and thickness variations, larger thickness gradient brings more obvious gradient hydrophobic surfaces. The results show that the RMS roughness gradient increases from 0 nm/cm, 0.08 nm/cm to 0.16 nm/cm and the thickness gradient increases from 0 nm/cm, 12.0 nm/cm to 13.2 nm/cm, with the tilt angle changing from 0 degrees, 30 degrees to 60 degrees, respectively. Correspondingly, the hydrophobicity gradient increases from 0 degrees/cm, 1.6 degrees/cm to 2.7 degrees/cm, respectively. Our study offers practicable method a method for developing hydrophobicity gradient surfaces, which can be used for droplet movement applications.

引用

页数：8

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