| Popis: |
The studies in this thesis deal with wetting research. Wetting is a topic studied over more than 200 years. Dating as early as 1804, the Young’s equation is the beginning of the efforts to explain the wetting phenomena. The Wenzel and the Cassie Baxter models are currently used to understand wetting research. Moreover, it is now widely accepted that the surface morphology plays as an important role on the wettability of real surfaces. Current developments in nanoscience and micro/nanotechnology allow the creation of several micro/nanostructured surfaces mimicking structures seen in nature, as for example the self-cleaning lotus leaf and the rose petals. Although many efforts have been performed to research the relationship of the surface condition (morphology as well as chemical composition) and wettability, it is still difficult to predict the wettability of a surface based on theories. Finally, focusing our studies on the wettability of a simple NP/plain substrate morphology, we presented a series of experimental results and relevant theoretical analysis that provide a comprehensive understanding of how nanostructure affects the wettability of the decorated surfaces. These studies also shed light on how to obtain certain wettability through nanostructuring of the surface morphology. For future research, we would like to design surfaces with more complex nanostructure and reveal the relationship between wettability and surface morphology, which would introduce our study closer to practical use. In addition, the experimental results in this work are open to explanation by other models or calculations in the future. |
