This book highlights the functions and models of biological surfaces with unique wettability and elucidates the methods to realize bioinspired surfaces. It discusses the theory and mechanism of fabrication that will help researchers to understand the nature of functional surfaces and to design them better for various applications. A model can be extracted from biological surfaces, such as lotus leaf, spider silk, butterfly wing, and beetle back, and learning from these natural biological features has gained more attention in recent years. The purpose of this learning is to develop new functional materials related to the research areas of physics, chemistry, biology, and materials science, such as some promising applications for micro-fluidic devices and functional textiles as well as corrosion resistance, liquid transportation, antifogging, and water-collecting engineering systems. The book is a good resource for researchers, engineers, scientists, and also students and general readers with innovative ideas for designing novel materials for future scientific works.