Recently we developed a new method of spherical submicron particle production by pulsed laser irradiation of primary small irregular nanoparticles suspended in liquid. For the first time we demonstrated that the nanoparticles can not only reduce their sizes under the pulse laser irradiation, but can grow essentially. To control the particle formation process, the mechanism of particle interaction with laser pulse has to be understood. Particle heating-melting-evaporation model was successfully applied to clarify this mechanism.
The fabrication of a designed arrangement of matter at the nano-scale level is a central goal of contemporary engineering endeavours. Silver nanoparticles synthesized by a laser ablation method in pure water are able to produce the aggregates, agglomerates and crystals due to condensed matter physics and chemistry. The stability of agglomerates and crystals is variable, depending on the composition of ensembles dominated by Ag2O and Ag respectively. The paper will present some fascinating nanostructures, such as films and vesicles.