Date of Award
5-2005
Degree Type
Thesis
Degree Name
M.S.
Degree Program
Applied Physics
Department
Physics
Major Professor
Stokes, Kevin
Second Advisor
Puri, Ashok
Third Advisor
Ventrice, Carl
Fourth Advisor
Tang, Jinke
Abstract
The Faraday rotation spectrum of composites containing magnetite nanoparticles is found to be dependent on the interparticle spacing of the constituent nanoparticles. The composite materials are prepared by combining chemicallysynthesized Fe3O4 (magnetite) nanoparticles (8 nm diameter) and poly(methylmethacrylate) (PMMA). Composites are made containing a range of nanoparticle concentrations. The peak of the main spectral feature depends on nanoparticle concentration; this peak is observed to shift from approximately 470 nm for (dilute composites) to 560 nm (concentrated). A theory is presented based on the dipole approximation which accounts for optical coupling between magnetite particles. Qualitative correlations between theoretical calculations and experimental data suggest the shifts in spectral peak position depend on both interparticle distance and geometrical configuration.
Recommended Citation
Smith, Damon, "Magneto-Optic Spectroscopy and Near-Field Optical Coupling in Nanoparticle Composite Materials" (2005). University of New Orleans Theses and Dissertations. 246.
https://scholarworks.uno.edu/td/246
Rights
The University of New Orleans and its agents retain the non-exclusive license to archive and make accessible this dissertation or thesis in whole or in part in all forms of media, now or hereafter known. The author retains all other ownership rights to the copyright of the thesis or dissertation.