期刊
MATERIALS LETTERS
卷 67, 期 1, 页码 338-341出版社
ELSEVIER
DOI: 10.1016/j.matlet.2011.09.100
关键词
SiO2; Nanoparticles; Hydrophobicity; Texturing; Hierarchical surface coating
资金
- University of Tulsa Department of Chemistry and Biochemistry
- University of Tulsa Institute of Nanotechnology
- Faculty development Summer Fellowship Program
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0923461] Funding Source: National Science Foundation
In this work, we fabricated an array of model hydrophobic surfaces with controlled roughness to establish a correlation between surface structure and observed hydrophobicity. SiO2 nanoparticles of different sizes (7, 12, 14 and 40 nm) were layer-by-layer spin-coated on glass supports to study the effect of surface roughness on wettability evaluated by water contact angles. The hydrophobicity of one-layer structured surfaces improved with an increase in particle size. Deposition of bigger nanoparticles on top of smaller ones, generating double-layer structures, resulted in rougher surfaces with higher hydrophobicity. A strong correlation between the size ratio of deposited nanoparticle combinations and roughness was observed. Based on these correlations, it is now possible to tune surface roughness and subsequent wettability by controlling the sizes of the nanoparticle layers. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据