| 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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Johra, Hicham
Aalborg University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Anomaly in the relation between thermal conductivity and crystallinity of silicate glass-ceramicscitations
- 2022Thermal conduction in a densified oxide glasscitations
- 2022Thermal conduction in a densified oxide glass:Insights from lattice dynamicscitations
- 2021Thermal conductivity of densified borosilicate glassescitations
- 2021Thermal, moisture and mechanical properties of Seacrete:A sustainable sea-grown building materialcitations
- 2021Thermal, moisture and mechanical properties of Seacretecitations
- 2020Principles of Energy Flexible Buildings
- 2020Heat conduction in oxide glasses: Balancing diffusons and propagons by network rigiditycitations
- 2020Heat conduction in oxide glasses: Balancing diffusons and propagons by network rigiditycitations
- 2019Boron anomaly in the thermal conductivity of lithium borate glassescitations
- 2017Influence of foaming agents on solid thermal conductivity of foam glasses prepared from CRT panel glasscitations
- 2016Influence of foaming agents on both the structure and the thermal conductivity of silicate glasses
Places of action
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article
Heat conduction in oxide glasses: Balancing diffusons and propagons by network rigidity
Abstract
<p>Understanding the variation of thermal conduction in disordered oxides is important for applications related to energy saving and electronics but currently lacks fundamental insight into the phonon propagation mechanisms. In this Letter, we report a strong correlation between thermal conductivity and the speed of sound within two families of modified oxide glass formers, in agreement with phonon-gas-theory predictions for crystalline materials. Based on calculations of diffuson-mediated heat transport, we then show that thermal conductivity in borate glasses is dominated by diffusive vibrational modes, while both diffusive and propagative modes contribute to heat conduction in silicate glasses. This fundamental difference in the heat propagation mechanism originates from differences in the phonon mean free path of low-frequency modes caused by the inherent variation of atomic rigidity between silicate and borate glasses. </p>