Fabrication of cerium oxide films with thickness and hydrophobicity gradients
Fabrication of cerium oxide films with thickness and hydrophobicity gradients
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具有厚度和疏水性梯度的氧化铈薄膜的制备
DOI:
10.1016/j.surfcoat.2021.127985
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发表时间:
2022-01
影响因子:
5.4
通讯作者:
Xuefeng Zhang
中科院分区:
文献类型:
--
作者:
Dapeng Zhu;Chenglong Hu;Rongzhi Zhao;Xiangyang Tan;Yixing Li;Vilko M;ić;Zhen Shi;Xuefeng Zhang
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°, 30° to 60°, respectively. Correspondingly, the hydrophobicity gradient increases from 0°/cm, 1.6°/cm to 2.7°/cm, respectively. Our study offers practicable method a method for developing hydrophobicity gradient surfaces, which can be used for droplet movement applications.
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通讯作者:
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