Functional surface modification is used to modify the surface of a material by bringing about desired physical, chemical or biological characteristics, different from the ones originally found onto the surface of a material. The modification can be done by different methods by altering a wide range of characteristics of the surface, such as: roughness, hydrophilicity, surface charge, surface energy, biocompatibility and reactivity to suit for any specific purpose. The industrial fields where the surface modification techniques are being used, are in the automotive, aerospace, missile, power, electronic, biomedical, textile, petroleum, petrochemical, chemical, steel, power, cement, machine tools and construction industries. Surface modification can be used to develop a wide range of functional properties, including physical, chemical, electrical, electronic, magnetic, mechanical, wear-resistant and corrosion-resistant. Sterilization in health industry, self-cleaning surfaces and protection with biofilms at the required substrate surfaces including almost all types of materials, such as metals, ceramics, polymers, and composites by coating with similar or dissimilar materials.
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