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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Bruno, G.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2024Geometric deep learning for enhanced quantitative analysis of microstructures in X-ray computed tomography datacitations
- 2021Structural, vibrational, optical properties and theoretical studies of new noncentrosymmetric material: Bis(2-Amino-5-(methylthio)-1,3,4-thiadiazol-3-ium) pentachloroantimonatecitations
- 2021Synthesis, crystal structure, Hirshfeld surface analyses, antimicrobial activity, and thermal behavior of some novel nanostructure hexa-coordinated Cd(II) complexes: Precursors for CdO nanostructurecitations
- 2021Characterization of thermal microcracking in refractory Zr02-SiO2 by means of X-ray refraction technique
- 2020Tool condition monitoring framework for predictive maintenance: a case study on milling processcitations
- 2020The impact of post manufacturing treatment of functionally graded Ti6Al4V scaffolds on their surface morphology and mechanical strengthcitations
- 2019In-plane Aligned Colloidal 2D WS2 Nanoflakes for Solution-Processable Thin Films with High Planar Conductivitycitations
- 2018Functional Hybrids of Multilayer CVD Graphene and Colloidal Anatase Nanocrystals
- 2017TiO2 Nanocrystals Decorated CVD Graphene for Electroanalytical Sensing
- 2017(Photo)Electrochemically Active Functional Hybrids of Multilayer CVD Graphene Decorated with Colloidal TiO2 Nanocrystals
- 2017Development and technological charaterization of multi-functional aeronautical coating from lab-scale to the relevant environmentcitations
- 2016Colloidal TiO2 modified CVD graphene based Hybrid for Electroanalytical Sensing
- 2016TiO2 Nanocrystals Decorated CVD Graphene based Hybrid for UV-light Active Photoanodecitations
- 2014Effect of Interface energy and electron transfer on shape, plasmon resonance and SERS activity of supported surfactant-free gold nanoparticlescitations
- 2011Load transfer in short fibre reinforced metal matrix composites
- 2008Neutron and synchrotron radiation diffraction study of the matrix residual stress evolution with plastic deformation in aluminum alloys and compositescitations
- 2007Multifunctional Nanocrystalline Thin Films of Er2O3: Interplay between Nucleation Kinetics and Film Characteristicscitations
- 2007Load transfer in short fibre reinforced metal matrix compositescitations
- 2007Er2O3 as a high-K dielectric candidatecitations
- 2006Residual stresses in random-planar aluminium/Saffil® short-fibre composites deformed in different loading modescitations
- 2006Plastic strain-induced rafting of gamma prime precipitates in Ni superalloys: Elasticity analysiscitations
- 2005The connection between micro-Residual Stress and thermo-mechanical treatments in 6061Al-15vol%SiCw compositescitations
- 2005Corrigendum to “Correlation between residual stresses and the strength differential effect in PM 6061A1–15 vol.% SiCw composites: Experiments, models and predictions” [Acta Mater 52 (2004) 5471–5483]
- 2004Correlation between residual stresses and the strength differential effect in PM6061Al–15 vol% SiCw composites: experiments, models and predictionscitations
- 2004Relaxation of the residual stress in 6061Al-15 vol.% SiCw composites by isothermal annealingcitations
- 2003Interrelation between microstructure and optical properties of erbium-doped nanocrystalline thin filmscitations
- 2002Determination of residual stress by neutron diffraction in 6061Al-15 vol.%· SiCw composites with different whisker orientation/distributioncitations
- 2002Determination of residual stress by neutron diffraction in 6061Al-15 vol. % · SiCw composites with different whisker orientation/distribution
- 2001Bragg Edge Determination for Accurate Lattice Parameter and Elastic Strain Measurement
Places of action
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article
Effect of Interface energy and electron transfer on shape, plasmon resonance and SERS activity of supported surfactant-free gold nanoparticles
Abstract
For device integration purposes plasmonic metal nanoparticles must be supported/deposited on substrates. Therefore, it is important to understand the interaction between surfactant-free plasmonic metal nanoparticles and different substrates, as well as to identify factors that drive nanoparticles nucleation and formation. Here we show that for nanoparticles grown directly on supports, the substrate/nanoparticle interfacial energy affects the equilibrium shape of nanoparticles. Therefore, oblate, spherical and prolate Au nanoparticles (NPs) with different shapes have been deposited by radiofrequency sputtering on substrates with different characteristics, namely a dielectric oxide Al 2O3 (0001), a narrow bandgap semiconductor Si (100), and a polar piezoelectric wide bandgap semiconductor 4H-SiC (0001). We demonstrate that the higher the substrate surface energy, the higher the interaction with the substrate, resulting in flat prolate Au nanoparticles. The resulting localized surface plasmon resonance characteristics of Au NPs/Al 2O3, Au NPs/Si and Au NPs/SiC have been determined by spectroscopic ellipsometry and correlated with their structure and shape studied by transmission electron microscopy. Finally, we have demonstrated the diverse response of the tailored plasmonic substrates as ultrasensitive SERS chemical sensors. Flat oblates Au NPs on SiC result in an enhanced and more stable SERS response. The experimental findings are validated by numerical simulations of electromagnetic fields. © 2014 The Royal Society of Chemistry.