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  • Title: Incorporation of iron oxide nanoparticles and quantum dots into silica microspheres.
    Author: Insin N, Tracy JB, Lee H, Zimmer JP, Westervelt RM, Bawendi MG.
    Journal: ACS Nano; 2008 Feb; 2(2):197-202. PubMed ID: 19206619.
    Abstract:
    We describe the synthesis of magnetic and fluorescent silica microspheres fabricated by incorporating maghemite (gamma-Fe2O3) nanoparticles (MPs) and CdSe/CdZnS core/shell quantum dots (QDs) into a silica shell around preformed silica microspheres. The resultant approximately 500 nm microspheres have a narrow size distribution and show uniform incorporation of QDs and MPs into the shell. We have demonstrated manipulation of these microspheres using an external magnetic field with real-time fluorescence microscopy imaging.
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