| 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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Saviot, Lucien
Laboratoire Interdisciplinaire Carnot de Bourgogne
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Sensitivity of Localized Surface Plasmon Resonance and Acoustic Vibrations to Edge Rounding in Silver Nanocubescitations
- 2023Visible-light photocatalytic degradation of dyes by TiO2 -Au inverse opal films synthesized by Atomic Layer Depositioncitations
- 2022Mechanosynthesis of carbonate and lithium co-substituted hydroxyfluorapatitecitations
- 2022Mechanosynthesis of carbonate and lithium co-substituted hydroxyfluorapatitecitations
- 2019Iron oxide-based nanostructured ceramics with tailored magnetic and mechanical properties: Development of mechanically robust, bulk superparamagnetic materials
- 2019Iron oxide-based nanostructured ceramics with tailored magnetic and mechanical properties: development of mechanically robust, bulk superparamagnetic materialscitations
- 2017Direct Writing on Copper Ion Doped Silica Films by Electrogeneration of Metallic Microstructurescitations
- 2013Poisson ratio and excess low-frequency vibrational states in glassescitations
- 2013THz nanocrystal acoustic vibrations from ZrO2 3D supercrystalscitations
- 2012Growth of glass-embedded Cu nanoparticles: A low-frequency Raman scattering studycitations
- 2011Dielectric properties and Raman spectroscopy in Ca-substituted Na0.5Bi0.5TiO3 ferroelectric ceramicscitations
- 2008Surface enhanced Raman scattering of silver sensitized cobalt nanoparticles in metal–dielectric nanocompositescitations
- 2008Surface enhanced Raman scattering of silver sensitized cobalt nanoparticles in metal–dielectric nanocompositescitations
- 2007Polarizability calculation of vibrating nanoparticles for intensity of low wavenumber Raman scatteringcitations
Places of action
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article
THz nanocrystal acoustic vibrations from ZrO2 3D supercrystals
Abstract
We report sharp low-frequency Raman spectral features of supercrystals synthesized via the "benzyl alcohol route" and consisting of either yttrium-stabilized or pure zirconia (ZrO2) nanocrystals. In situ formed benzoate species control the nanocrystal growth and act as organic glue leading to the assembly of the nanocrystals in highly ordered 3D supercrystals. We attribute some Raman peaks to THz acoustic vibrations of individual nanocrystals which are only weakly coupled due to the strong acoustic mismatch between the capping ligands and the nanocrystals. Peak positions are consistent with nanocrystal sizes estimated from transmission electron microscopy and X-ray powder diffraction studies. Narrow size distribution, together with uniform morphological and structural features of the nanocrystals, leads to sharp Raman peaks in the THz spectral region. After removing the ligands by annealing, the acoustic vibrations of the nanocrystals couple resulting in an increase of their frequency. These findings suggest that 3D supercrystals of zirconia nanocrystals can be used for manipulating THz phonons.