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Monolayer-covered Aluminum Surfaces Exhibiting Negligible Contact Angle Hysteresis
Atsushi Hozumi,Dalton F. Cheng 한국표면공학회 2010 한국표면공학회 학술발표회 초록집 Vol.2010 No.11
Hydrophobic oxidized aluminum (Al<SUP>Al2O3</SUP>) surfaces exhibiting negligible contact angle hysteresis were prepared by chemical vapor depostion (CVD) of bis((tridecafluoro-1,1,2,2,tetrahydrooctyl)-dimethylsiloxy)methylsilane (F₂?H). XPS and AFM confirmed that our facile CVD method produces monolayers with thicknesses of ~1.2 ㎚ on the Al<SUP>Al2O3</SUP> surfaces without discernible change in surface morphology. After F26H monolayer deposition, hydrophilic Al<SUP>Al2O3</SUP> surface became hydrophobic and exhibited virtually no water contact angle hysteresis (advancing/receding water contact angles (θ<SUB>A</SUB>/θ<SUB>R</SUB>)=110°/109°). Water droplets on these low-hysteresis hydrophobic surfaces moved very easily without “pinning”. They also show excellent anti-collosion properties.