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학술지 Solution-processed Fabrication of Superhydrophobic Hierarchical Zinc Oxide Nanostructures via Nanotransfer Printing and Hydrothermal Growth
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저자
홍성훈, 김미현, 윤혜원, 백태종, 이헌
발행일
201712
출처
Surface and Coatings Technology, v.331, pp.189-195
ISSN
0257-8972
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.surfcoat.2017.10.022
협약과제
17JB1200, 가시광파장용 나노결정기반 3차원 저손실 메타소재 개발, 홍성훈
초록
In this report, we present a solution-based process to fabricate hierarchical ZnO nanostructures by a sequential nanoimprint process and hydrothermal reaction. Micro- or mesoscale ZnO patterns are first fabricated by solution-processed nanotransfer printing using colloidal ZnO nanoparticles. Nano-scale ZnO nanorods are then hydrothermally grown on the surface of microstructures to fabricate the hierarchical architectures. The ZnO-based hierarchical structures exhibited superior superhydrophobic properties with very small sliding angle (contact angle > 150째, sliding angle < 4째). A solution-based process using mild chemical reagents enables ZnO hierarchical structure to be fabricated on various types of substrates, including Si, glass, flexible polymer substrates, metal foils, curved surfaces, and even on the surface of LED devices, without significant damage to the substrate. This ability indicates that this fabrication method of superhydrophobic hierarchical surfaces can be potentially utilized to fabricate self-cleaning surfaces for many industrial applications, such as solar cell panels, building materials, and electronic devices.
키워드
Hierarchical nanostructures, Hydrothermal growth, Nanoimprinting, Soft lithography, Superhydrophobicity, ZnO nanoparticles
KSP 제안 키워드
Building materials, Chemical reagents, Contact angle(CA), Curved surface, Fabrication method, Flexible polymer, Hierarchical Architecture, Hierarchical Zinc Oxide Nanostructures, Hierarchical ZnO nanostructures, Hierarchical nanostructures, Hydrothermal reaction