Surface modification is the process of altering the physical or chemical properties of a material's surface to improve its performance or appearance. It is a specialized skill that involves the use of various techniques such as chemical treatments, physical deposition, and ion implantation. Surface modification can be used to enhance a material's wettability, adhesion, corrosion resistance, hardness, and biocompatibility. It is commonly used in the manufacturing of electronic devices, medical implants, and automotive components, among others. Proper surface modification requires an understanding of material science, chemistry, and engineering principles.