| 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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Eich, Manfred
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024On the applicability of the Maxwell Garnett effective medium model to media with a high density of cylindrical porescitations
- 2024Demystifying the semiconductor-to-metal transition in amorphous Vanadium pentoxide: the role of substrate/thin film interfaces
- 2024Demystifying the Semiconductor-to-Metal Transition in Amorphous Vanadium Pentoxidecitations
- 2024Demystifying the Semiconductor‐to‐Metal Transition in Amorphous Vanadium Pentoxide: The Role of Substrate/Thin Film Interfaces
- 2024Demystifying the Semiconductor-to-Metal Transition in Amorphous Vanadium Pentoxide:The Role of Substrate/Thin Film Interfacescitations
- 2023Chemical interface damping by electrochemical oxidation of gold
- 2022Nanoporous gold as an active plasmonic metamaterial
- 2021Influence of Alumina Addition on the Optical Properties and the Thermal Stability of Titania Thin Films and Inverse Opals Produced by Atomic Layer Deposition
- 2019Advancing the fabrication of YSZ-inverse photonic glasses for broadband omnidirectional reflector films
- 2018Photonic glass for high contrast structural color
- 2018Photonic glass for high contrast structural color
- 2018Photonic materials for high-temperature applications: synthesis and characterization by X-ray ptychographic tomography
- 2015Enhanced structural and phase stability of titania inverse opalscitations
- 2015Mechanism that governs the electro-optic response of second-order nonlinear polymers on silicon substratescitations
- 2015Yttria-stabilized zirconia microspheres: Novel building blocks for high-temperature photonics
- 2014Modification of a Teng-Man technique to measure both r33 and r13 electro-optic coefficientscitations
- 2014Electrical and electro-optic characterization of nonlinear polymer thin films on silicon substrate
- 2013Fabrication of high Q-cavities with functional polymer cladding
- 2013High Q silicon photonic crystal cavities for functional cladding materials
- 2013Configurable silicon photonic crystal waveguidescitations
- 2013Configurable silicon photonics with electron beam bleaching
- 2012Trimming of high-Q-factor silicon ring resonators by electron beam bleachingcitations
- 2012Photonic crystal cavity definition by electron beam bleaching of chromophore doped polymer claddingcitations
- 2012Four wave mixing in silicon hybrid and silicon heterogeneous micro photonic structurescitations
- 2010Hybrid silicon-organic racetrack resonator designs for electro-optical modulationcitations
- 2009Electro-optical modulator in a polymer-infiltrated silicon slotted photonic crystal waveguide heterostructure resonator
Places of action
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document
Yttria-stabilized zirconia microspheres: Novel building blocks for high-temperature photonics
Abstract
Zirconia-based ceramics cover a huge variety of applications, including refractories, electro- and bioceramics, fuel cells, catalysts, and many more. For various photonic applications considered for energy systems and heat management, zirconia microspheres are interesting building blocks due to their high refractive index, as well as their chemical and mechanical robustness. However, instabilities caused by thermally-induced phase transitions and grain growth at temperatures above ∼1000 °C preclude high-temperature applications of pure zirconia particles. Here, we present a synthetic route for yttria-stabilized zirconia microparticles with significantly improved thermal stability. With these particles we conducted the first study on their thermal stability as a function of the yttrium content and at temperatures up to 1500 °C. Using X-ray diffraction and scanning electron microscopy, the optimum Y content was determined to be 8-10%, which was marked by stabilization of the tetragonal or cubic phase and significantly attenuated grain growth. Furthermore, with diameters ranging from 2 to 5 μm, the particles covered a size range perfectly suited for photonic applications in the IR spectral range. To demonstrate this, photonic glass coatings were prepared with these particles and their IR reflectivity and microstructural stability was studied after subjecting them to various heating cycles. While heating beyond 1200 °C led to failure and delamination of undoped particle films, films doped with 6 and 10% Y displayed quite stable broadband IR reflection of up to 80% in the wavelength range from 1-5 μm, even after prolonged heating at 1400 °C. A detailed analysis of the X-ray diffraction patterns revealed that prolonged heating at 1400 °C resulted in phase decomposition due to Y segregation into Y-lean and Y-rich domains, confirming the presence of the solute-drag effect.