General concept of a surface microgeometry reconstruction based on laser technology

Abstract

Surface of solids play a leading role in any process of interaction between solids, solids-liquids, solids-gases and solids-plasma. Microgeometry (roughness) is a key parameter of the solids surface which influence a lot mechanical, optical, electronic, chemical, thermical and other characteristics.Nowadays the laser-based technologies is a great challenge to improve a surface microgeometry (SM) quality and controllability.Different laser-based surface processing are considered: -surface microstructuring and control of roughness by laser ablation, -surface microstructuring based on creation of surface electromagnetic waves (SEW) and surface periodic structures (SPS), -surface smoothing and microstructuring based on laser heating till melting and further phenomena in a melted phase.Some examples of laser applications to improve optical, tribological and other surface characteristic are considered and analyzed.Future prospects of this field are discussed.