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Date Permissions Signed
Date of Award
Department or Program Affiliation
Master of Science (MS)
Bao, Ying (Materials scientist)
Bussell, Mark E.
Murphy, Amanda R.
Nanomaterials, materials with at least one dimension on the nanoscale have become an area of extreme scientific interest due to their many unique properties with applications in catalysis, optics, and sensing, just to name a few. Metal nanoparticles are particularly interesting because of the interactions between light and surface electrons in the metal’s conduction band, called localized surface plasmons. In anisotropic metal nanoparticles these plasmons are especially exciting due to the highly responsive quality of the plasmonic resonance associated with their varied nano dimensions. Gold nanorods and nano dendrites in particular exhibit electromagnetic effects which are specifically associated to the shape and environment surrounding the tips of the particles. The singular plasmonic properties of these materials were explored for their properties as signal transducers to enhance detection of metal ions and as signal amplifiers to enhance the production of Raman shifted light from small molecules. Specifically, the first of these projects explored the detection of mercury (II) ions using gold nanorods the surface of which have been modified with polyethylene glycol thiol ligands, this resulted in both a moderate enhancement in ion detection along with significant enhancement of nanoparticle stability. In another project gold nano dendrites were grown under varied conditions to examine how the complexity of the particles could be tuned in order to supplement their use in surface-enhanced Raman Spectroscopy.
Plasmonics, Gold Nanoparticles, Mercury, Molecular Imprinting, Silica Coating, Protein, Raman, Dendrites
Western Washington University
Subject – LCSH
Plasmonics; Nanoparticles; Molecular imprinting; Raman spectroscopy.
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.
Crockett, John, "Enhancing Plasmonic Nanomaterials: Colorimetric Sensing and SERS" (2021). WWU Graduate School Collection. 1049.