Figure 2From: Photo-induced electric polarizability of Fe3O4 nanoparticles in weak optical fieldsNanoparticle size. The average hydrodynamic diameter of the synthesized nanoparticles (15 nm) dispersed in hexane was determined by dynamic light scattering method (Zetasizer Nano ZS, Malvern, UK) at a laser wavelength of 532 nm.Back to article page