S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Mechanical Aerospace Engineering (기계항공공학부) Theses (Master's Degree_기계항공공학부)
Fabrication and evaluation of omniphobic transparent glass with self-cleaning and anti-fogging capability
자가세정과 김서림 방지 기능을 갖는 투명한 omniphobic 유리 제작 및 평가
- Taeho Son
- 공과대학 기계항공공학부
- Issue Date
- 서울대학교 대학원
- 학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부, 2015. 8. 김호영.
- It is well known that superhydrophobic surfaces, having an apparent contact angle of water higher than 150° and low contact angle hysteresis, show a self-cleaning property, i.e. lotus effect. However these surfaces are vulnerable to oil contamination and in contaminated by oil. their self-cleaning property deteriorate. Therefore, it is vital for the surfaces to be omniphobic, Here we fabricate, optimize, and test omniphobic transparent glass prepared by non-lithographic, anisotropic etching. In order to make surface roughness and lower surface energy, a glow discharge of CF4 gas and 1H,1H,2H,2H-perfluorooctyl trichlorosilane (PFOTS) were used, respectively. We investigate the effect of temperature, CF4 plasma duration, and PFOTS vapor deposition time on the contact angles of water, ethylene glycol, and hexadecane. The results of measurements of the contact angle were also compared with theory of Cassie and Baxter. Finally, optical transmission for several glass was measured to quantify self-cleaning and anti-fogging.