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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hyperspectral dark-field microscopy of gold nanodisks

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Author(s):
Grasseschi, Daniel [1] ; Lima, Filipe S. [1] ; Nakamura, Marcelo [1] ; Toma, Henrique E. [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Micron; v. 69, p. 15-20, FEB 2015.
Web of Science Citations: 6
Abstract

The light scattering properties of hexagonal and triangular gold nanodisks were investigated by means of Cytoviva hyperspectral dark-field microscopy, exploring the huge enhancement of the scattered waves associated with the surface plasmon resonance (SPR) effect. Thanks to the high resolution capability of the dark-field microscope, the SPR effect turned it possible to probe the individual nanoparticles directly from their hyperspectral images, extrapolating the classical optical resolution limit, and providing their corresponding extinction spectra. Blue spectral shifts involving the in-plane dipolar modes were observed for the hexagonal gold nanodisks in relation to the triangular ones, allowing their spectroscopic differentiation in the dark-field images. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 11/00037-6 - Study and application of physical and chemical properties of plasmons nanoparticles in intelligent devices
Grantee:Daniel Grasseschi
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 13/50096-4 - Ions specific effect in colloidal systems: combining experimental data and theoretical modeling
Grantee:Filipe da Silva Lima
Support Opportunities: Scholarships in Brazil - Post-Doctoral