Biofunctional magnetic 'core-shell' nanoparticles generated by laser ablation of iron in liquid

摘要

Biofunctional 'core-shell' nanoparticles were generated via pulsed laser ablation of a bulk iron target in liquid containing a stabilizer agent. This novel technique for generation of magnetic nanoparticles is a prospect for potential applications in laser diagnostics and treatment of damaged cartilage. We studied the absorption spectra, magnetic properties of magnetite nanoparticles and their colloidal solutions to be used for impregnation into cartilage. Core-shell magnetite nanoparticles of 10-15 nm size have stable size distribution, low velocity of sedimentation and do not agglomerate during more than three months of storage time.