Optical Properties of Substrate Supported Mixtures of Silver and Gold Nanoparticles

Silver and gold have been extensively explored in the field of nanoscience owing to their strong plasmonic responses in the visible region of the spectrum. Herein, mixtures of Au and Ag nanoparticles (NPs) were combined to achieve new nanoarchitectures with useful electromagnetic properties. It was predicted that these mixtures would produce materials with multiple plasmon modes providing opportunity for greater manipulation of light within one simple system. The spectral information obtained from individual depositions of NPs provided information on the light extinction exhibited by the nanomaterials. For AgNCs and AuNPs on polystyrene (PS) dipolar resonances at 439 nm and at 530 nm were obtained respectively. Simple computations were proceeded for the design of mixtures of nanoparticles having a 1:1 extinction of AuNP:AgNCs, and the mix was deposited on a PS film. The plasmonic modes obtained in the mixture are tunable across the UV-vis-NIR spectrum by manipulation of their local environment.

Name thesis:degree_name

Master of Science (M.Sc.)

Level thesis:degree_level

Master's

Discipline thesis:degree_discipline

Chemistry

Grantor dc:publisher

Carleton University

Year dc:date.issued

2021

Author dc:creator

• Colley, Devron Adam

Statement dc:rights

• Copyright © 2021 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.

Language dc:language.iso

en

DOI

10.22215/etd/2021-14749

OAI identifier oai:identifier

oai:carleton.scholaris.ca:20.500.14718/41228