Au–Fe₃O₄ Dumbbell Nanoparticles as Dual‐Functional Probes

Abstract

Heavy lifting: Dumbbell-shaped Au–Fe3O4 nanoparticles are made biocompatible and suitable for attachment to A431 cells. The particles are magnetically and optically active and are useful for simultaneous magnetic and optical detection (see picture). The Au–Fe3O4 nanoparticles are promising as a new type of multifunctional probe for diagnostic and therapeutic applications.