超疏水表面制备与应用.pptx

Super-hydrophobic Surface:Background, Methods and ApplicationsReporter: Dong XuPartnerships: R.X. Deng, Q. Lin, W.J. Lin, W.L. Liu, J. Shang, R.G. Su, Q.Y. Sun, J.J. Wang, S.J. Xiao, D. Xu, Y.G. Xu, J. Zou.2015.12ContentContentWhat’s Super-hydrophobic Surface? Super-hydrophobic phenomena : It’s first observed in the nature Self-cleaningPlants: lotus, candock, rose, silver ragwort and so on never get dirty.Insects: anti-fogging properties of moth;mosquitoes able to walk on water.Reference: Darmanin T, et al. Advanced Materials, 2013, 25(10): 1378-1394.What’s Super-hydrophobic Surface? Definition: The contact angle between the surface and the water droplet is bigger than 150°.Structural features:Many d=5~9 μm papillae in a random distribution.There are many branch-like hierarchical nanostructures with 124.3±3.2 nm on every papilla.Nanostructures on the top of the micro-papillae is very useful for super-hydrophobicReference: Feng L, et al. Advanced materials, 2002, 14(24): 1857-1860.ContentOverview of Fabrication MethodsSuper-hydrophobic surface is a kind of biomimetic materials.(The key point is going to obtain the “nanostructures”)Template method of printing; Vapor induced phase separation (VIPS)；microwave plasma-enhanced chemical vapor deposition(MWPE-CVD); anodic oxidization;……Reference: Lin Feng, et al. Advanced Material, 2002, 14: 1857-1860.A New Classification of Fabrication MethodsA new classification according to our investigation.(Creating a rough structure on a hydrophobic surface is most used)Ultraviolet Lithography TechnologySchematic diagram of ULTMaskSubstrate and Photoresis (negative photoresist in the example)UV lightDeveloperReference: Notsu H, et al. Journal of Materials Chemistry, 2005, 15(15): 1523-1527.Ultraviolet Lithography TechnologyTSF=thermal shrinkage filmReference: Young et al. Applied Surface Science. 2015, 349 ,169-173.Ultraviolet Lithography TechnologyA. Prepare Mold materialI. PDMS：nano-patterned polydimethylsiloxane （聚二甲基硅氧烷）Reaso