Surface Nano-Structuring by Adsorption and Chemical Reactions

Materials

关键词: self-assembly;    nano-structuring;    nano-dots and lines;    formation and array of quasi-compounds;    reaction of surface atoms;    phase boundaries;    reconstruction;    Cu(100);    Cu(110);    Ag(110);    Ni(110);    Au(111)-hex;    Si(111)-7 × 7;    electronic and magnetic properties of nano-metals;   

DOI  :  10.3390/ma3094518

来源: mdpi

【 摘 要 】

Nano-structuring of the surface caused by adsorption of molecules or atoms and by the reaction of surface atoms with adsorbed species is reviewed from a chemistry viewpoint. Self-assembly of adsorbed species is markedly influenced by weak mutual interactions and the local strain of the surface induced by the adsorption. Nano-structuring taking place on the surface is well explained by the notion of a quasi-molecule provided by the reaction of surface atoms with adsorbed species. Self-assembly of quasi-molecules by weak internal bonding provides quasi-compounds on a specific surface. Various nano-structuring phenomena are discussed: (i) self-assembly of adsorbed molecules and atoms; (ii) self-assembly of quasi-compounds; (iii) formation of nano-composite surfaces; (iv) controlled growth of nano-materials on composite surfaces. Nano-structuring processes are not always controlled by energetic feasibility, that is, the formation of nano-composite surface and the growth of nano-particles on surfaces are often controlled by the kinetics. The idea of the “kinetic controlled molding” might be valuable to design nano-materials on surfaces.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland.