Poster Title

Synthesis and Characterization of Silver Nanoparticles with Spectroscopic Analysis and Atomic Resolution Imaging

Research Mentor(s)

Steven Emory

Affiliated Department

Chemistry

Sort Order

58

Start Date

18-5-2017 12:00 PM

End Date

18-5-2017 3:00 PM

Document Type

Event

Abstract

Surface Enhanced Raman Scattering (SERS) is a spectroscopic technique that promotes increased inelastic light scattering through the excitation and relaxation of a molecule's vibrational modes. This is achieved through increasing the magnitude of the molecule's dipole. This technique is wavelength dependent and correlates well with the enhancement of the field at the surface of the nanoparticles. SERS enhances the vibrational modes perpendicular to the metal surface, allowing detection that is as accurate as a single molecule. The synthesis of gold and silver nanoparticles serves as basis for additional characterization of a variety of adsorbates. By determining the particle size and polarizability, this data can provide additional insight as to how other molecules could adsorb to the nanoparticle surface and how they interact with the surface and the molecules around it. Characterization of particles synthesized with AgNO3 and NaBH4 aims to reduce the amount of background signal in SERS which will help develop further understanding of these surface interactions.

Rights

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 documentation for commercial purposes, or for financial gain, shall not be allowed without the author's written permission.

Language

English

Format

application/pdf

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May 18th, 12:00 PM May 18th, 3:00 PM

Synthesis and Characterization of Silver Nanoparticles with Spectroscopic Analysis and Atomic Resolution Imaging

Chemistry

Surface Enhanced Raman Scattering (SERS) is a spectroscopic technique that promotes increased inelastic light scattering through the excitation and relaxation of a molecule's vibrational modes. This is achieved through increasing the magnitude of the molecule's dipole. This technique is wavelength dependent and correlates well with the enhancement of the field at the surface of the nanoparticles. SERS enhances the vibrational modes perpendicular to the metal surface, allowing detection that is as accurate as a single molecule. The synthesis of gold and silver nanoparticles serves as basis for additional characterization of a variety of adsorbates. By determining the particle size and polarizability, this data can provide additional insight as to how other molecules could adsorb to the nanoparticle surface and how they interact with the surface and the molecules around it. Characterization of particles synthesized with AgNO3 and NaBH4 aims to reduce the amount of background signal in SERS which will help develop further understanding of these surface interactions.