| 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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Borensztein, Yves
French National Centre for Scientific Research
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023The Ground State of Epitaxial Germanene on Ag(111)citations
- 2021Structure of germanene/Al(111): a two-layers surface alloycitations
- 2020Growth of germanium-silver surface alloys followed by in situ scanning tunneling microscopy: Absence of germanene formationcitations
- 2019Gas-induced selective re-orientation of Au–Cu nanoparticles on TiO2 (110)citations
- 2017Multilayer silicene: clear evidence of Ag-terminated bulk siliconcitations
- 2016Determining the atomic structure of the ( 4 × 4 ) silicene layer on Ag(111) by combined grazing-incidence x-ray diffraction measurements and first-principles calculationscitations
- 2016Effective Medium Description of Plasmonic Couplings in Disordered Polymer and Gold Nanoparticle Compositescitations
- 2015Tailoring Anisotropic Interactions between Soft Nanospheres Using Dense Arrays of Smectic Liquid Crystal Edge Dislocationscitations
- 2011Substrate Effect on the Plasmon Resonance of Supported Flat Silver Nanoparticlescitations
- 2010Sixton rectangles in the structure of alumina ultrathin films on metalscitations
Places of action
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article
Tailoring Anisotropic Interactions between Soft Nanospheres Using Dense Arrays of Smectic Liquid Crystal Edge Dislocations
Abstract
We investigated composite films of gold nanoparticles (NPs)/liquid crystal (LC) defects as a model system to understand the key parameters, which allow for an accurate control of NP anisotropic self-assemblies using soft templates. We combined spectrophotometry, Raman spectroscopy, and grazing incidence small-angle X-ray scattering with calculations of dipole coupling models and soft sphere interactions. We demonstrate that dense arrays of elementary edge dislocations can strongly localize small NPs along the defect cores, resulting in formation of parallel chains of NPs. Furthermore, we show that within the dislocation cores the inter-NP distances can be tuned. This phenomenon appears to be driven by the competition between “soft (nano)sphere” attraction and LC-induced repulsion. We evidence two extreme regimes controlled by the solvent evaporation: (i) when the solvent evaporates abruptly, the spacing between neighboring NPs in the chains is dominated by van der Waals interactions between interdigitated capping ligands, leading to chains of close-packed NPs; (ii) when the solvent evaporates slowly, strong interdigitation between the is avoided, leading to a dominating LC-induced repulsion between NPs associated with the replacement of disordered cores by NPs. The templating of NPs by topological defects, beyond the technological inquiries, may enable creation, investigation, and manipulation of unique collective features for a wide range of nanomaterials.