Sponsor
Portland State University. Department of Physics
First Advisor
Pui-Tak Leung
Term of Graduation
Spring 1997
Date of Publication
5-8-1997
Document Type
Thesis
Degree Name
Master of Science (M.S.) in Physics
Department
Physics
Language
English
Subjects
Molecular dynamics -- Mathematical models, Dipole movements -- Mathematical models, Fluorescence, Surface roughness
DOI
10.15760/etd.7691
Physical Description
1 online resource (53 pages)
Abstract
The interaction between an emitting molecular dipole and a conducting substrate with a periodic surface roughness is looked at with particular interest in the different orientations of the dipole with respect to the substrate surface. A previous dynamical, perturbative theory for the effects of perpendicular dipole is extended to treat a dipole oriented parallel to the surface of the substrate. The results are then applied to study the modified fluorescence characteristics of the emitting dipoles. Numerical results demonstrate that some fluorescence characteristics are extremely sensitive to the molecular orientation with the dipole oriented along the grating (x direction) exhibiting unique behavior. One possible consequence of the interaction is the lengthening of molecular fluorescence lifetimes by manipulating the parameters of the system. Also, the usual step for averaging the orientations for experimental values is scrutinized.
Rights
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Persistent Identifier
https://archives.pdx.edu/ds/psu/36735
Recommended Citation
Blacke, William Lee, "Molecular Fluorescence at a Rough Surface: The Orientation Effects" (1997). Dissertations and Theses. Paper 5820.
https://doi.org/10.15760/etd.7691
Comments
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