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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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Smazna, D.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2019Tailored crystalline width and wall thickness of an annealed 3D carbon foam composites and its mechanical propertycitations
- 2018Fundamentals of the temperature-dependent electrical conductivity of a 3D carbon foam—Aerographitecitations
- 2017Enhancing the conductivity of ZnO micro- and nanowire networks with gallium oxidecitations
- 2017Morphology dependent UV photoresponse of Sn-doped ZnO microstructurescitations
- 2017Hybridization of zinc oxide tetrapods for selective gas sensing applicationscitations
- 2017Functional NiTi grids for in situ straining in the TEMcitations
- 2016Electrical and thermal conductivity of aerogel/epoxy composites
- 2016Photocatalytic applications of doped zinc oxide porous films grown by magnetron sputtering
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article
Fundamentals of the temperature-dependent electrical conductivity of a 3D carbon foam—Aerographite
Abstract
<p>Aerographite is a 3D interconnected carbon foam with a hollow tetrapodal morphology. The properties of Aerographite, especially the electrical conductivity, are strongly dependent on the wall thickness, the degree of graphitization and the ambient temperature. The tailored-carbon-structures like wall thickness (number of layer) and state of graphitization determine the electrical properties of the carbon foam. The wall thickness of Aerographite can be controlled by a stepwise reduction of solid arms of sacrificial template with respect to synthesis time, in which wall thicknesses between 3 and 22 nm can be easily achieved. The decreasing of the wall thickness leads to a reduced electrical conductivity of untreated Aerographite. Contrary, the conductivity of annealed Aerographite increased with reducing of the wall thicknesses. The morphology of Aerographite has been analyzed via scanning electron (SEM), transmission electron (TEM) microscopy and Raman spectroscopy. Furthermore, the dependency of the electrical conductivity on the temperature is measured and based on this the band gap energy is calculated. As a result, Aerographite shows a metallic conductive behaviour which can be changed semiconducting nature by further high temperature treatment.</p>