论文部分内容阅读
With a two-phase method,well-dispersed 5.2 nm Ag nanoparticles with narrow size distribution (±0.5 nm) are synthesized.The assembled structures of colloidal Ag nanoparticles on highly oriented pyrolytic graphite (HOPG),silicon chip and microscopic glass have been investigated by atomic force microscopy (AFM).With different spin-coating speeds and concentrations of colloidal silver nanoparticles,various assembly structures could form on those substrates.On HOPG,Ag nanoparticles were absorbed and aligned along single-atom-height step edges to form a linear one-layer structure.And on silicon chip and microscopic glass,one-layer closed packing fractal structure and two-layer closed packing ring were observed respectively.
With a two-phase method, well-dispersed 5.2 nm Ag nanoparticles with narrow size distribution (± 0.5 nm) are synthesized. The assembled structures of colloidal Ag nanoparticles on highly oriented pyrolytic graphite (HOPG), silicon chip and microscopic glass have been investigated by atomic force microscopy (AFM). Different spin-coating speeds and concentrations of colloidal silver nanoparticles, various assembly structures could form on those substrates. On HOPG, Ag nanoparticles were absorbed and aligned along single-atom-height step edges to form a linear one-layer structure. And on silicon chip and microscopic glass, one-layer closed packing fractal structure and two-layer closed packing ring were observed respectively.