Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/24735

TitleProbing spatial correlations in a system of polarizable nanoparticles via measuring its optical extinction spectrum
Author(s)Pereira, Rui M. S.
Pereira, Paulo
Smirnov, Georgi
Vasilevskiy, Mikhail
Issue date25-Jun-2013
PublisherIOP Publishing
JournalEurophysics letters
Abstract(s)It is shown that quantitative information on spatial correlations in a system of polarizable particles can be extracted directly from its experimentally measurable optical spectra. For a collection of metallic nanoparticles (NPs), it is demonstrated that the degree of shortrange correlation in NP’s positions can be evaluated by an appropriate numerical analysis of the extinction spectrum in the surface plasmon resonance region, given the polarizability of an individual NP. The spectrum analysis consists in the evaluation of a single number, which is the derivative of the ensemble response function in the vanishing polarizability limit, using the Tikhonov regularization method. This number has to be compared to pre-calculated values for a model NP system with given density and correlation parameters.
TypeArticle
URIhttp://hdl.handle.net/1822/24735
DOI10.1209/0295-5075/102/67001
ISSN0295-5075
Publisher versionhttp://iopscience.iop.org/0295-5075/102/6/67001
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CMAT - Artigos em revistas com arbitragem / Papers in peer review journals
CDF - CEP - Artigos/Papers (with refereeing)

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