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Cindi Dennis

My research interests are in the areas of spintronics and biomedical applications of magnetic nanoparticles.

In spintronics, my focus is on spin injection into semiconductors.
Specifically,
(a) What are the spin decoherence mechanisms (both experimental and theoretical) across the interfaces and within the semiconductor and how do you minimize them?
(b) What measurement artifacts that obscure a true spin injection signal?
(c) How does this apply to device design and its efficiency?

In biomedical applications of magnetic nanoparticles, my focus is on the fundamental characterization methods.
Specifically,
(a) What are the measurement methods for quantifying parameters of interest like the blocking temperature, anisotropy, normalization for saturation magnetization, etc.?
(b) How does one quantify these fundamental parameters for both individual nanoparticles and collections of nanoparticles?
(c) What are the measurement methods for quantifying distributions in magnetic properties (e.g. coercivity, interactions, etc.) from a particular synthesis?
(d) What are the quantitative characterization methods for particular biomedical applications (e.g. calorimetry for quantifying heat output in hyperthermia, measuring T1 and T2 for MRI contrast agents, etc.)

Position:

Physicist
Materials Science and Engineering Division
Functional Nanostructured Materials
Contact

Phone: 301-975-6041
Email: cindi.dennis@nist.gov
Fax: 301-975-4553