398 Semiconductor Nanoparticles by Laser Ablation in Liquid high pressure) and highly nonequilibrium processes (ultrafast chemical reaction and thermal quenching). Second, the surface charging and redox behavior of NPs by LAL were analyzed, and these features were used to make an assembly of NPs in hollow spheres and hollow sphere arrays. Correspondingly, a strong and stable blue luminescence was reported for the LAL-induced NPs. The new understanding of the emission mechanisms was presented on the basis of ...