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What are the different methods of surface modification? 


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There are several methods of surface modification. One method is physical modification, which includes encapsulation or insertion on the surface . Another method is laser surface modification, which involves changing the surface composition, microstructure, or geometry of a material using laser technology . Surface modification can also be achieved through chemical methods, such as covalently bonded self-assembled monolayer (SAM) modification . Additionally, surface modification can be done by bringing a polymeric material into contact with an organic compound and then radicalizing the polymeric material to graft the organic compound onto the surface . Furthermore, surface modification can be achieved through acid or alkaline chemical reactions, incorporation of nanoparticles, microwave radiation, and plasma exposure . Finally, surface modification can be done using an aqueous electrolyte solution containing citric acid and ammonium bifluoride .

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The different methods of surface modification mentioned in the paper include acid or alkaline chemical reactions, incorporation of nanoparticles, microwave radiation, and plasma exposure.
The provided paper does not mention the different methods of surface modification.
The different methods of surface modification mentioned in the paper are laser surface heat treatment, laser surface melting, laser direct metal deposition, laser physical vapor deposition, laser shock peening, and laser surface texturing.
The paper discusses physical modification methods such as encapsulation and chemical modification methods such as covalently bonded self-assembled monolayer (SAM) modification as different methods of surface modification.
The paper does not provide information about different methods of surface modification.

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