Document Type


Original Publication Date


Journal/Book/Conference Title

Journal of Applied Physics





DOI of Original Publication



Originally published at

Date of Submission

October 2015


The comprehensive goal of this research is the synthesis and characterization of nanomaterials that are spectrally tunable in terms of their electromagnetic signal, are robust, magnetic (allowing their piloted movement), and have the potential to be functionalized for the detection of CBRNE threats. Various chemical methods were utilized for synthesis of magnetic (iron) and luminescent rare earth (RE) components, and their mixtures. Effects of integrating an iron core into RE luminescent lattices (excited by UV, emit in the VIS) were investigated. The determination of the optimum balances between magnetic and luminescent components such that the magnetism was maximized while maintaining acceptable fluorescence integrity will be discussed. The emphasis of this work is focused on developing a distributed sensor suitable for use in the terrestrial environment. The robust properties of using a RE luminescent shell would allow the particles to be resistant to photobleaching. Additionally the chemical stability of the RE shell would allow operation in a variety of pH conditions. The magnetic core will ultimately allow the distributed particles to be recollected.


McDowall, N. B., Wilkins, J. R., & Carroll, K. J., et al. Spectrally tunable magnetic nanoparticles designed for distribution/recollection applications. Journal of Applied Physics, 107, 09B327 (2010). Copyright © 2010 U.S. Government.

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