Journal ArticleDOI
Thin films composed of Au nanoparticles embedded in AlN: Influence of metal concentration and thermal annealing on the LSPR band
R. P. Domingues,Marcos Rodrigues,Maria Manuela Carvalho Proença,Diogo Emanuel Carvalho Costa,Eduardo Alves,N.P. Barradas,Filipe J. Oliveira,Rui F. Silva,Joel Nuno Pinto Borges,Filipe Vaz +9 more
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TLDR
In this paper, the possibility of using aluminium nitride (AlN) as a host dielectric matrix for LSPR films was evaluated, and three sets of nanocomposite Au:AlN films were prepared by magnetron sputtering, followed by thermal annealing to promote the growth of the nanoparticles.About:
This article is published in Vacuum.The article was published on 2018-11-01. It has received 22 citations till now. The article focuses on the topics: Nanocomposite & Nanoparticle.read more
Citations
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Development of label-free plasmonic Au-TiO2 thin film immunosensor devices
Ana I. Barbosa,Joel Nuno Pinto Borges,Diana Isabela Faria Meira,Diogo Emanuel Carvalho Costa,Marcos Rodrigues,Rita Rebelo,Vitor M. Correlo,Filipe Vaz,Rui L. Reis +8 more
TL;DR: Experimental results demonstrated the successful functionalization of the films' surface with antibodies, with the immobilization occurring preferentially in the exposed nanoparticles and negligibly on the TiO2 matrix, which demonstrates the suitability for the development of cost-effective, label-free LSPR based immunosensor devices.
Journal ArticleDOI
Nanocomposite thin films based on Au-Ag nanoparticles embedded in a CuO matrix for localized surface plasmon resonance sensing
Maria Manuela Carvalho Proença,Joel Nuno Pinto Borges,Joel Nuno Pinto Borges,Marcos Rodrigues,Diana Isabela Faria Meira,Paula Sampaio,João Paulo Dias,P. Pedrosa,P. Pedrosa,Nicolas Martin,Nenad Bundaleski,Orlando M. N. D. Teodoro,Filipe Vaz,Filipe Vaz +13 more
TL;DR: In this article, thin films composed of monometallic Au and Ag, and bimetallic Au Ag nanoparticles, dispersed in a CuO matrix were prepared, characterised and tested for Localized Surface Plasmon Resonance (LSPR) sensing.
Journal ArticleDOI
Gas Sensors Based on Localized Surface Plasmon Resonances: Synthesis of Oxide Films with Embedded Metal Nanoparticles, Theory and Simulation, and Sensitivity Enhancement Strategies
Marcos Rodrigues,Joel Nuno Pinto Borges,C. Lopes,Rui M. S. Pereira,Mikhail Vasilevskiy,Filipe Vaz +5 more
TL;DR: In this article, the Portuguese Foundation for Science and Technology (FCT) funded the research of Marco S. Rodrigues and his colleagues in the context of the Strategic Funding UIDB/04650/2020.
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Optimization of Au:CuO Nanocomposite Thin Films for Gas Sensing with High-Resolution Localized Surface Plasmon Resonance Spectroscopy.
TL;DR: The results showed that the Au:CuO thin film system is a RI sensitive platform able to detect inert gases, which can be more sensitive to detect non-inert gases as O2 or even other reactive species.
Journal ArticleDOI
Electron Tomography of Plasmonic Au Nanoparticles Dispersed in a TiO2 Dielectric Matrix.
Siddardha Koneti,Joel Nuno Pinto Borges,Lucian Roiban,Marcos Rodrigues,Nicolas Martin,Thierry Epicier,Filipe Vaz,Philippe Steyer +7 more
TL;DR: The goal was to assess the nanostructural characteristics and correlate them with the optical properties of the AuNPs, particularly the localized surface plasmon resonance (LSPR) behavior, and to provide the identification of "hot-spots".
References
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Magnetron sputter deposition: Linking discharge voltage with target properties
TL;DR: The interpretation of the discharge voltage and/or its behavior, especially during reactive magnetron sputtering, is less straightforward as discussed by the authors, and it is necessary to look into the details of the magnetron discharge, the processes occurring at the cathode (or target) and the influence of the important discharge parameters such as discharge current, magnet configuration, and discharge gas pressure.
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The incorporation of noble metal nanoparticles into host matrix thin films: synthesis, characterisation and applications
Gillian Walters,Ivan P. Parkin +1 more
TL;DR: In this article, the optical properties of noble metal nanoparticles, numerical theory, including Mie and Maxwell-Garnet equations are explained with particular attention on photoluminescence, photochromic and electrochromic properties.
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Advanced physics and algorithms in the IBA DataFurnace
N.P. Barradas,Chris Jeynes +1 more
TL;DR: The IBA DataFurnace (NDF) as mentioned in this paper is a general purpose program for analysis of IBA data, which includes Rutherford backscattering, elastic (non-Rutherford) backscatter, elastic recoil detection analysis (ERDA), non-resonant nuclear reaction analysis (NRA), and particle induced X-ray emission (PIXE).
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Surface-plasmon-enhanced deep-UV light emitting diodes based on AlGaN multi-quantum wells
TL;DR: The development of complete structural AlGaN-based deep-ultraviolet light-emitting diodes with an aluminum thin layer for increasing light extraction efficiency and a 217% enhancement in peak photoluminescence intensity is observed.
Journal ArticleDOI
Submicron bidirectional all-optical plasmonic switches
TL;DR: A submicron bidirectional all-optical plasmonic switch with an asymmetric T-shape single slit with Sharp asymmetric spectra as well as significant field enhancements occur in the symmetry-breaking structure.