Long-Lasting Hydrophilicity on Nanostructured Si-Incorporated Diamond-Like Carbon Films

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• 作者：Jin Woo Yi ; Myoung-Woon Moon ; Sk. Faruque Ahmed ; Haeri Kim ; Tae-Gon Cha ; Ho-Young Kim ; Seock-Sam Kim ; Kwang-Ryeol Lee
• 刊名：Langmuir
• 出版年：2010
• 出版时间：November 16, 2010
• 年：2010
• 卷：26
• 期：22
• 页码：17203-17209
• 全文大小：1151K
• 年卷期：v.26,no.22(November 16, 2010)
• ISSN：1520-5827

文摘

We investigated the long-lasting hydrophilic behavior of a Si-incorporated diamond-like carbon (Si-DLC) film by varying the Si fraction in DLC matrix through oxygen and nitrogen plasma surface treatments. The wetting behavior of the water droplets on the pure DLC and Si-DLC with the nitrogen or oxygen plasma treatment revealed that the Si element in the oxygen-plasma-treated Si-DLC films played a major role in maintaining a hydrophilic wetting angle of <10° for 20 days in ambient air. The nanostructured patterns with a roughness of 10 nm evolved because of the selective etching of the carbon matrix by the oxygen plasma in the Si-DLC film, where the chemical component of the Si-Ox bond was enriched on the top of the nanopatterns and remained for over 20 days.