Arrays of metal nanoparticles with well-defined two- or three-dimensional ordered structures in a solid matrix have many potential applications, e.g., novel optical gratings, data-storage systems, and microelectronics. A synthetic method is described for preparing multilayer composite thin films with metal nanoparticles in porous ceramic matrices through colloidal adsorption and sol-gel processing. Techniques for the control of the interparticulate distance, the number of particles in each layer, the interlayer distance, and the pore structure are outlined.
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