| 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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Deparis, Olivier
University of Namur
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2024Unsupervised topological analysis of polarized light microscopy
- 2023Enhanced quantitative birefringence imaging supported by unsupervised topological analysis of polarized light microscopy
- 2023Secondary ion mass spectrometry, a powerful tool for revealing ink formulations and animal skins in medieval manuscriptscitations
- 2020UV scattering by pores in avian eggshellscitations
- 2020Scattering of ultraviolet light by avian eggshellscitations
- 2019Growth dynamics and light scattering of gold nanoparticles in situ synthesized at high concentration in thin polymer filmscitations
- 2019Gold nanoparticles growing in a polymer matrix : what can we learn from imaging ellipsometry ?
- 2018Scattering analysis, imaging ellipsometry and reflectivity of gold nanoparticles growing in a polymer matrix
- 2018Reflectivity, imaging ellipsometry and scattering analysis of gold nanoparticles growing in a polymer matrix
- 2016ZnO quantum dots decorated 3DOM TiO 2 nanocomposites:Symbiose of quantum size effects and photonic structure for highly enhanced photocatalytic degradation of organic pollutantscitations
- 2016ZnO quantum dots decorated 3DOM TiO2 nanocompositescitations
- 2015Optimized absorption of solar radiations in nano-structured thin films of crystalline silicon via a genetic algorithmcitations
- 2015Linking optical properties and nanostructure of NiCrOx Cermet nanocomposite for solar thermal application
- 2012Plasmonic device using backscattering of light for enhanced gas and vapour sensingcitations
- 2011Light coupling and enhanced backscattering in layered plasmonic nanocompositescitations
- 2010Leaky-modes excitation in thermally poled nanocomposite glass and their exploitation for saturable absorption
- 2010Poling-assisted fabrication of plasmonic nanocomposite devices in glasscitations
- 2007Photon pair source based on parametric fluorescence in periodically poled twin-hole silica fibercitations
- 2007Photon pair source based on parametric fluorescence in periodically poled twin-hole silica fiber
- 2006Poling-assisted bleaching of soda-lime float glasses containing silver nanoparticles with a decreasing filling factor across the depthcitations
- 2006Refractive index engineering in glass containing spherical silver nanoparticles using dc electric field
- 2005Electric field-assisted formation of percolated silver nanolayers inside glasscitations
- 2005Evolution of poling-assisted bleaching of metal-doped nanocomposite glass with poling conditionscitations
- 2004Poling-assisted bleaching of metal-doped nanocomposite glasscitations
Places of action
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document
UV scattering by pores in avian eggshells
Abstract
<p>Eggshell is essential for the reproduction of birds. The optical properties of their shells may have an impact on biological functions such as heat and UV protection, recognition by the parents or camouflage. Whereas ultraviolet reflection by bird eggshells has been superficially described in the scientific literature, the physical origin of this phenomenon remains poorly understood. In this article, reflectance peaks in the near UV range were observed by spectrophotometric measurements of hen eggshells. In addition, electron microscopy imaging revealed the presence of pores within the so-called "calcified shell"part (i.e., between ca. 20 μm and ca. 240 μm deep from the outer surface). The average radii of these pores range from 120 to 160 nm. Mercury intrusion porosimetry allowed to highlight a distribution of pore radii around 175 nm. Numerical and analytical predictions using scattering theory indicate that these pores are responsible for the optical response observed in the UV range. </p>