Gold-seeded Lithium Niobate Nanoparticles: Influence of Gold Surface Coverage on Second Harmonic Properties
| Autor: | Ana-María Pablo-Sainz-Ezquerra, Mathias Urbain, Iryna Kandybka, Rachael Taitt, Yannick Mugnier, Christelle Yeromonahos, Yann Chevolot, Zacharie Behel, Ronan Le Dantec, Virginie Monnier, Nicolas Martinez-Rodriguez, Sandrine Beauquis, Pierre-François Brevet, Eloïse Millet |
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| Přispěvatelé: | Institut des Nanotechnologies de Lyon (INL), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), INL - Chimie et Nanobiotechnologies (INL - C&N), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Optique non linéaire et interfaces (ONLI), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
IRON-OXIDE General Chemical Engineering Chemistry Multidisciplinary Lithium niobate Analytical chemistry Nanoparticle hyperpolarizability 02 engineering and technology 01 natural sciences lcsh:Chemistry chemistry.chemical_compound plasmon ZNO General Materials Science chemistry.chemical_classification Physics lithium niobate Polymer [CHIM.MATE]Chemical Sciences/Material chemistry OPTICAL-PROPERTIES 021001 nanoscience & nanotechnology [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biophysics [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry Chemistry Physical Sciences Science & Technology - Other Topics 0210 nano-technology Materials science [PHYS.PHYS.PHYS-BIO-PH]Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph] Materials Science Hyperpolarizability Materials Science Multidisciplinary 1ST HYPERPOLARIZABILITY NANOWIRES 010402 general chemistry Article Physics Applied X-ray photoelectron spectroscopy surface Surface charge Nanoscience & Nanotechnology Plasmon Science & Technology second harmonic generation Second-harmonic generation gold seeds [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation 0104 chemical sciences chemistry lcsh:QD1-999 [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] CLUSTERS GENERATION |
| Zdroj: | Nanomaterials Nanomaterials, MDPI, 2021, 11 (4), pp.950. ⟨10.3390/nano11040950⟩ Nanomaterials, Vol 11, Iss 950, p 950 (2021) Volume 11 Issue 4 |
| ISSN: | 2079-4991 |
| DOI: | 10.3390/nano11040950⟩ |
| Popis: | Hybrid nanoparticles composed of an efficient nonlinear optical core and a gold shell can enhance and tune the nonlinear optical emission thanks to the plasmonic effect. However the influence of an incomplete gold shell, i.e., isolated gold nano-islands, is still not well studied. Here LiNbO3 (LN) core nanoparticles of 45 nm were coated with various densities of gold nano-seeds (AuSeeds). As both LN and AuSeeds bear negative surface charge, a positively-charged polymer was first coated onto LN. The number of polymer chains per LN was evaluated at 1210 by XPS and confirmed by fluorescence titration. Then, the surface coverage percentage of AuSeeds onto LN was estimated to a maximum of 30% using ICP-AES. The addition of AuSeeds was also accompanied with surface charge reversal, the negative charge increasing with the higher amount of AuSeeds. Finally, the first hyperpolarizability decreased with the increase of AuSeeds density while depolarization values for Au-seeded LN were close to the one of bare LN, showing a predominance of the second harmonic volumic contribution. ispartof: NANOMATERIALS vol:11 issue:4 ispartof: location:Switzerland status: published |
| Databáze: | OpenAIRE |
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