| People | Locations | Statistics |
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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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Royer, Sebastien
University of the Littoral Opal Coast
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Properties evolution of LaCoO 3 Perovskite synthesized by reactive grinding - Application to the toluene oxidation reactioncitations
- 2024Nanostructured viologen-phosphate bridged titanium dioxide frameworks: Tuning thermal growth for improving supercapacitancecitations
- 2023New insights on the catalytic reductive amination of hydroxyacetone amination over RUWXC/AC Catalyst
- 2023Shaping MOF oxime oxidation catalysts as three-dimensional porous aerogels through structure-directing growth inside chitosan microspherescitations
- 2023Cellulose conversion to glycols over DUT-8(Ni) derived nickel-tungsten/carbons: selectivity tuning.
- 2023Boron nitride embedded in chitosan hydrogel as a hydrophobic, promising metal-free, sustainable antibacterial materialcitations
- 2022Water-Based Synthesis of Zr6-Based Metal–Organic Framework Nanocrystals with Sulfonate Functions: Structural Features and Application to Fructose Dehydrationcitations
- 2022Shaping MOF oxime oxidation catalysts as three-dimensional porous aerogels through structure-directing growth inside chitosan microspherescitations
- 2020MnOx-loaded mesoporous silica for the catalytic oxidation of formaldehyde. Effect of the melt infiltration conditions on the activity - stability behaviorcitations
- 2020Interactions Between Topological Defects and Nanoparticlescitations
- 2020Reactive grinding synthesis of la(sr,ce)coo3 and their properties in toluene catalytic total oxidationcitations
- 2014Efficient and Robust Reforming Catalyst in Severe Reaction Conditions by Nanoprecursor Reduction in Confined Spacecitations
- 2014Mixed-phase TiO2 photocatalysts: Crystalline phase isolation and reconstruction, characterization and photocatalytic activity in the oxidation of 4-chlorophenol from aqueous effluentscitations
- 2012Selective hydrogenation of citral to unsaturated alcohols over mesoporous Pt/Ti-Al2O3 catalysts. Effect of the reduction temperature and of the Ge additioncitations
- 2011Catalytic performances of large pore Ti-SBA15 supported Pt nanocomposites for the citral hydrogenation reaction citations
- 2010Control of titania nanodomain size as a route to modulate SMSI effect in Pt/TiO2 catalystscitations
Places of action
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article
Interactions Between Topological Defects and Nanoparticles
Abstract
Liquid Crystal (LC) topological defects have been shown to trap nanoparticles (NPs) in the defect cores. The LC topological defects may thus be used as a matrix for new kinds of NP organizations templated by the defect geometry. We here study composites of LC smectic dislocations and gold NPs. Straight NP chains parallel to the dislocations are obtained leading to highly anisotropic optical absorption of the NPs controlled by light polarization. Combining Grazing Incidence Small Angle X-ray scattering (GISAXS), Rutherford Back Scattering (RBS), Spectrophotometry and the development of a model of interacting NPs, we explore the role of the Np size regarding the dislocation core size. We use NPs of diameter D = 6 nm embedded in an array of different kinds of dislocations. For dislocation core larger than the NP size, stable long chains are obtained but made of poorly interacting NPs. For dislocation core smaller than the NP size, the disorder is induced outside the dislocation cores and the NP chains are not equilibrium structures. However we show that at least half of these small dislocations can be filled, leading to chains with strongly enhanced electromagnetic coupling between the NPs. These chains are more probably stabilized by the elastic distortions around the defect cores, the distortion being enhanced by the presence of the grain boundary where the dislocations are embedded.