Nano Surfaces - Properties, Processisng Techniques and Applications

Nano surfaces are the surfaces having geometrical parameters in nano scale. The enhanced geometrical, physical and chemical properties of nano surfaces play an important role in redefining the functionality of the products. The concept of redefining the function represents a shift of emphasis from manufacturing towards function or performance. To some extent the manufacturing requirements of the surface has masked the more relevant functional parameters. Ideally, in order to be of use, the definition and operation should mimic the function. Parameters such as Ra are simply descriptions of the waveform. Further, surface finish is critical in vertical flow of, say, electricity or heat because it determines the number and shape of contacts. This paper discusses the properties and the processing techniques to produce nano surfaces. The process variables of these processing techniques can be controlled and manipulated to suit the functionality of the product under production. The processing techniques include conventional machining, advanced non-conventional machining and advanced nano-surface engineering techniques. Finally the applications of nano surfaces in different fields are also discussed.