چكيده به لاتين
Nowadays, many studies are being carried on super-hydrophobic surfaces due to its increasing applications in industry important and influential fields. Surface energy which is an effective factor in the hydrophobicity, depends on the surface morphology and its constituent materials. This study aims to change the surface morphology using Ludox silica nanoparticles and to decrease the surface energy by using FDTS cover which is a low surface energy silane.
The purpose of this study is to implement and analyze a stable super-hydrophobic cover using silicate based layer-by-layer (LbL) self-assembly method in order to control nano-sized roughness of the multilayer structures. Even in the case that the super-hydrophobic outer layers were damaged, the films maintained their super-hydrophobicity because of the hydrophobic nature of their inner layers. Therefore, they are stable enough to withstand Scratches. Moreover, the resulting films are transparent due to the used silanes which is very important in many applications such as solar cells and inside-body cameras.
In this thesis, glass and membrane substrates are selected as the target of coating. Using sol-gel method, nano-particles are coated on these surfaces for different iterations and the effect of iteration on hydrophobicity and transparency is investigated. Furthermore, the effect of annealing and different silanes on turning a hydrophobic surface to a super-hydrophobic one is studied.
Keywords:
Hydrophobic, sol-gel, layer-by-layer (LbL) self-assembly method, silane
