制作
蚀刻(微加工)
材料科学
纳米技术
硅
光电子学
图层(电子)
医学
病理
替代医学
作者
Thi Phuong Nhung Nguyen,Renaud Dufour,V. Thomy,V. Senez,Rabah Boukherroub,Yannick Coffinier
标识
DOI:10.1016/j.apsusc.2013.12.166
摘要
Abstract This study reports on a simple method for the preparation of superhydrophobic and highly oleophobic nanostructured silicon surfaces. The technique relies on metal-assisted electroless etching of silicon in sodium tetrafluoroborate (NaBF4) aqueous solution. Then, silver particles were deposited on the obtained surfaces, changing their overall physical morphology. Finally, the surfaces were coated by either C4F8, a fluoropolymer deposited by plasma, or by SiOx overlayers chemically modified with 1H,1H,2H,2H-perfluorodecyltrichlorosilane (PFTS) through silanization reaction. All these surfaces exhibit a superhydrophobic character (large apparent contact angle and low hysteresis with respect to water). In addition, they present high oleophobic properties, i.e. a high repellency to low surface energy liquids with various contact angle hysteresis, both depending on the morphology and type of coating.
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