Optically transparent, mechanically durable, nanostructured superhydrophobic surfaces enabled by spinodally phase-separated glass thin films

被引：59

作者：

Aytug, Tolga ^{[1
]}

Simpson, John T. ^{[1
]}

Lupini, Andrew R. ^{[1
]}

Trejo, Rosa M. ^{[1
]}

Jellison, Gerald E. ^{[1
]}

Ivanov, Ilia N. ^{[1
]}

Pennycook, Stephen J. ^{[1
]}

Hillesheim, Daniel A. ^{[1
]}

Winter, Kyle O. ^{[1
]}

Christen, David K. ^{[1
]}

Hunter, Scott R. ^{[1
]}

Haynes, J. Allen ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

NANOTECHNOLOGY | 2013年 / 24卷 / 31期

关键词：

SILICA FILMS; BROAD-BAND; COATINGS; FABRICATION; MORPHOLOGY; ROUGHNESS;

D O I：

10.1088/0957-4484/24/31/315602

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

We describe the formation and properties of atomically bonded, optical quality, nanostructured thin glass film coatings on glass plates, utilizing phase separation by spinodal decomposition in a sodium borosilicate glass system. Following deposition via magnetron sputtering, thermal processing and differential etching, these coatings are structurally superhydrophilic (i.e., display anti-fogging functionality) and demonstrate robust mechanical properties and superior abrasion resistance. After appropriate chemical surface modification, the surfaces display a stable, non-wetting Cassie-Baxter state and exhibit exceptional superhydrophobic performance, with water droplet contact angles as large as 172 degrees. As an added benefit, in both superhydrophobic and superhydrophilic states these nanostructured surfaces can block ultraviolet radiation and can be engineered to be anti-reflective with broadband and omnidirectional transparency. Thus, the present approach could be tailored toward distinct coatings for numerous markets, such as residential windows, windshields, specialty optics, goggles, electronic and photovoltaic cover glasses, and optical components used throughout the US military.

引用

页数：8

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