Trajectory control of PbSe-γ-Fe2O3 nanoplatforms under viscous flow and an external magnetic field

Academic Article


  • The flow behavior of nanostructure clusters, consisting of chemically bonded PbSe quantum dots and magnetic γ-Fe2O3 nanoparticles, has been investigated. The clusters are regarded as model nanoplatforms with multiple functionalities, where the γ-Fe2O3 magnets serve as transport vehicles, manipulated by an external magnetic field gradient, and the quantum dots act as fluorescence tags within an optical window in the near-infrared regime. The clusters' flow was characterized by visualizing their trajectories within a viscous fluid (mimicking a blood stream), using an optical imaging method, while the trajectory pictures were analyzed by a specially developed processing package. The trajectories were examined under various flow rates, viscosities and applied magnetic field strengths. The results revealed a control of the trajectories even at low magnetic fields (<1 T), validating the use of similar nanoplatforms as active targeting constituents in personalized medicine. © 2010 IOP Publishing Ltd.
  • Published In

  • Nanotechnology  Journal
  • Digital Object Identifier (doi)

    Author List

  • Etgar L; Nakhmani A; Tannenbaum A; Lifshitz E; Tannenbaum R
  • Volume

  • 21
  • Issue

  • 17