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TitleAg fractals formed on top of a porous TiO2 thin film
Author(s)Borges, Joel Nuno Pinto
Rodrigues, M. S.
Lopes, C.
Costa, D.
Ferreira, A.
Pereira, Rui M. S.
Costa, M. F.
Vasilevskiy, Mikhail
Vaz, F.
KeywordsSilver fractals
Surface Plasmon Resonance
Diffusion-Limited Aggregation
Issue date2016
Journalphysica status solidi (RRL) - Rapid Research Letters
CitationBorges, J., Rodrigues, M. S., Lopes, C., Costa, D., Ferreira, A., Pereira, R. M. S., . . . Vaz, F. (2016). Ag fractals formed on top of a porous TiO2 thin film. Physica Status Solidi-Rapid Research Letters, 10(7), 530-534. doi: 10.1002/pssr.201600131
Abstract(s)This work demonstrates the formation of Ag fractals on top of a Ag:TiO2 thin film. The dendrite-type objects emerged from a homogeneous and highly transparent Ag:TiO2 nanocomposite, via the mechanism of diffusion-limited-aggregation of Ag atoms, during heat-treatment at 500 ºC. A porous TiO2 matrix was also formed during this process, opening a wide range of possible applications, namely in sensing-based ones, together with surface enhanced spectroscopies. Furthermore, fractals incorporate a wide range of shapes and spatial scales, inducing a potentially interesting optical response, over the whole visible range, presumably related with localized surface plasmon modes with very broad spectral distribution.
Appears in Collections:CMAT - Artigos em revistas com arbitragem / Papers in peer review journals
CDF - GRF - Artigos/Papers (with refereeing)

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