Fabrication of hierarchical micro/nanostructures using electron irradiation of polymers and their application to superhydrophobic surfaces = 전자빔 조사를 이용한 계층적 마이크로/나노구조 제조 및 초소수성 표면에의 응용

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Micro/nano-combined hierarchical structures were fabricated by electron irradiation of polymer precursor film. When silicone grease film was irradiated with an electron beam, hierarchical pore structures were fabricated. Surfaces with hierarchical pore structures exhibited good superhydrophobic property after surface treatment with fluorosilane. However, large-area fabrication was difficult because the precursor material was highly viscous and thus large-area precursor with uniform thickness was hard to be prepared. As a method overcoming this limitation, precursor film was prepared by successive spin coating of PMMA colloidal solution and silicone grease diluted in hexane. After electron irradiation, the precursor film was converted to a polymer/ceramic composite film with the highly porous hierarchical structures consisting of micrometer-sized pores and microparticles decorated with nanobumps. The fabricated films with the hierarchical porous structure exhibit good superhydrophobicity with excellent self-cleaning and anti-adhesion properties after surface treatment with fluorosilane. In addition, the superhydrophobic coatings showed high hardness and strong adhesion to the substrate. The presented technique provides a straightforward route to produce large-area and mechanically robust superhydrophobic films on various substrate materials.
Advisors
Cho, Sung-Ohresearcher조성오researcher
Description
한국과학기술원 : 원자력및양자공학과,
Publisher
한국과학기술원
Issue Date
2010
Identifier
418731/325007  / 020047971
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 원자력및양자공학과, 2010.2 , [ vii, 99 p. ]

Keywords

계층구조; 마이크로/나노; 전자빔 조사; 고분자; 초소수성; superhydrophobicity; hierarchical structure; micro/nano; electron irradiation; polymer

URI
http://hdl.handle.net/10203/49023
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=418731&flag=dissertation
Appears in Collection
NE-Theses_Ph.D.(박사논문)
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