Facile method to fabricate raspberry-like particulate films for superhydrophobic surfaces.
A facile method using layer-by-layer assembly of silica particles is proposed to prepare raspberry-like particulate films for the fabrication of superhydrophobic surfaces. Silica particles 0.5 microm in diameter were used to prepare a surface with a microscale roughness. Nanosized silica particles were then assembled on the particulate film to construct a finer structure on top of the coarse one. After surface modification with dodecyltrichlorosilane, the advancing and receding contact angles of water on the dual-sized structured surface were 169 and 165 degrees , respectively. The scale ratio of the micro/nano surface structure and the regularity of the particulate films on the superhydrophobic surface performance are discussed.
Tsai
Hui-Jung
HJ
Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan.
Lee
Yuh-Lang
YL
D057927:Hydrophobic and Hydrophilic Interactions; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry; D010316:Particle Size; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
D008567:Membranes, Artificial; D012822:Silicon Dioxide