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Supperrepellentmaterial1WettabilityWatercontactangle(WCA)largerthan150°andextremelylowWCAhysteresisorslidinganglelessthan10°.SlidingangleAwidespectrumofapplicationsWatercollectorinthedesertAntifoulingcoatingDragreduction14Self-cleaningmaterialsAntifoggingsurfaces局部放大Cicada'swingsButterflywings2、ThetheoreticsofSupperrepellentmaterialForsmooth,flat,uniformsolidsurface,therelationshipbetweencontactangleandsurfaceenergycanbedescribedbyYong’sequation(ThomasYoung,1805): cosθ=(γSV–γSL)/γLV HydrophobicsurfaceFunctionalsurfaceFluorinatedpolymerself-assemblyRealsolidsurfacewithconcave-convexstructureCosθ*=Cosθ*=PANNanofibermaterialSelf-cleaningeffectTurningaSurfaceSuper-RepellentEventoCompletelyWettingLiquidsTemplatemethodEtchingChen等利用纳米球刻蚀的方法首先得到了排列整齐的单层聚苯乙烯(PS)纳米珠阵列,再用氧等离子体处理以进一步减小纳米珠的尺寸从而得到粗糙表面。在其表面覆盖20nm厚的金膜并用十八硫醇(ODT)进行修饰可以增强其疏水性。通过调整PS纳米珠的直径(440-190nm)可以控制表面接触角的大小(132-168°)。Chemicalvapordeposition4ResearchplanSomequestionsThankYou!