Multi-angle fluorometer technique for the determination of absorption and scattering coefficients of subwavelength nanoparticles

Shortell, Matthew P., Hewins, Rodney A., Fernando, Joseph F.S., Walden, Sarah L., Waclawik, Eric R., & Jaatinen, Esa (2016) Multi-angle fluorometer technique for the determination of absorption and scattering coefficients of subwavelength nanoparticles. Optics Express, 24(15), pp. 17090-17102.

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Abstract

A thorough analysis of the resonance light scattering (RLS) technique for quantitative scattering measurements of subwavelength nanoparticles is reported. The systematic error associated with using a measurement at a single angle to represent all of the scattered light is investigated. In-depth analysis of the reference material was performed to identify and minimize the error associated with the reference material. Semiconductor ZnO nanobullets and spherical Au nanoparticles of various sizes were used to verify the approach. A simple and inexpensive modification to standard fluorometers is demonstrated using a glass prism allowing scattering measurements in the slightly forward and backwards directions. This allows quantification of the systematic error associated with RLS which is consistently overlooked.

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1 citations in Scopus
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ID Code: 97563
Item Type: Journal Article
Refereed: Yes
Keywords: Scattering measurements, Mie theory, Nanomaterials
DOI: 10.1364/OE.24.017090
ISSN: 1094-4087
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
  • AOARD/FA2386-14-1-4056
Facilities: Central Analytical Research Facility
Copyright Owner: 2016 Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
Copyright Statement: Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Deposited On: 21 Jul 2016 23:48
Last Modified: 30 Jun 2017 10:42

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