Dissertation/Thesis Abstract

Near-field investigations of localized surface plasmon resonances in gold nanospheres and plasmonic nanoantennas
by Heiberg, Bryan Dale, M.S., California State University, Long Beach, 2011, 65; 1504473
Abstract (Summary)

The near-field contrast formation in spherical nanoparticles and bowtie shaped metallic nanostructures is investigated using apertureless near-field scanning optical microscopy (ANSOM). Field enhancement due to plasmon resonance is explored of gold nanospheres prepared via drop-casting and plasmonic nanoantennas prepared via high resolution electron beam lithography. Specifically, the fundamental properties of localized surface plasmon resonance (LSPR) due to variably-sized gold nanospheres and gold bowtie nanoantennas under varied polarization angles are examined. These experimental results are compared to theoretical model calculations based on an extended dipole model and finite-difference time-domain (FDTD) simulations [1] for the absorption and scattering of a nanoparticle and bowtie nanoantenna at or near plasmon resonance. Near-field measurements of signal enhancement due to LSPR were taken and analyzed.

Indexing (document details)
Advisor: Abate, Yohannes
School: California State University, Long Beach
School Location: United States -- California
Source: MAI 50/03M, Masters Abstracts International
Subjects: Nanoscience, Physics
Publication Number: 1504473
ISBN: 978-1-124-99415-4
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