During last 3 months I was trying to find solution in case of silver nanoparticles deposition. Due to hydrophobic properties of titanium dioxide surface, spin caoting deposition isn't very efective. I tried also to mixed coloidal solution with some alcohols to increase wettalbilty or let the drop of coloidal solution evaporate , but this way didn't slove the problem of to small number of deposited particles. The resolution heve been found by putting sample into to coloidal solution and leave it for about 15 minutes. At that time particles has fallen on the sample surface. This experiment has shown increase of density of particles on the surface. But still a lot of work has to be done to extract disired structure. Naw I am starting the simulation stage as well. By computer simulation I will studding interactions of plasmonic strukctures and light.