Superhydrophobic, mechanically durable, highly transparent surface covered with CuO/PDMS composite nano-tips using one-step wet oxidation process of Cu/PDMS multilayer

被引：8

作者：

Kim, Dong Hwan ^{[1
]}

Jung, Young ^{[1
]}

Tak, Hyeong Jun ^{[1
]}

Kwak, Dong Hwa ^{[1
]}

Ahn, Seokyoung ^{[1
]}

Ko, Jong Soo ^{[1
]}

机构：

[1] Pusan Natl Univ, Sch Mech Engn, Busan 46241, South Korea

来源：

APPLIED SURFACE SCIENCE | 2024年 / 649卷

关键词：

CuO/PDMS nano-tips; Wet oxidation; Superhydrophobic; Mechanically durable; Transparent; ROBUST; FABRICATION; COATINGS; ALUMINUM; FILMS;

D O I：

10.1016/j.apsusc.2023.159165

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, a mechanically durable, transparent, and superhydrophobic CuO/polydimethylsiloxane (PDMS) composite nano-tips surface was fabricated by a wet oxidation process of a Cu/PDMS multilayer structure. A growth mechanism for the CuO/PDMS composite nano-tips was proposed accounting for the superhydrophobic characteristics of the CuO/PDMS nanostructured surface: During wet oxidation, as CuO nanowires form and grow, the PDMS surface in contact with Cu is dragged up along the CuO nano-tips surface, eventually becoming a CuO/PDMS nanocomposite superhydrophobic surface. The fabricated CuO/PDMS nano-tips surface showed superhydrophobicity with a water contact angle of 158 degrees, and optical transmittance of up to 93.8 % in the 400-700 nm wavelength range. Additionally, the mechanical durability of the fabricated surfaces was also investigated. Repeated touching force (-1.0 kgf), stretching (-100 %), and bending (-100 degrees) 1000-cycle test results confirm the mechanical durability of the CuO/PDMS nanostructured surface. As a mechanically durable, transparent, and superhydrophobic film, the CuO/PDMS nanostructured surface was used as protective film for a touch screen. This study offers novel insights into the durability of artificial superhydrophobic surfaces and the synthesis methods of metal oxide-polymer nanocomposites.

引用

页数：9