journal article·2008-02-26Open access

Incorporation of Iron Oxide Nanoparticles and Quantum Dots into Silica Microspheres

Numpon Insin, Joseph B. Tracy, Hakho Lee, John P. Zimmer, Robert M. Westervelt, Moungi G. Bawendi

ACS Nano· Volume 2· Issue 2

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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Research context

OpenAlex topics: Quantum Dots Synthesis And Properties · Characterization and Applications of Magnetic Nanoparticles · Photonic Crystals and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139,

Division of Engineering and Applied Sciences and Department of Physics, Harvard University, Cambridge, Massachusetts 02138

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