| 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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Zakri, Cécile
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2023High‐Energy‐Density Waterborne Dielectrics from Polyelectrolyte‐Colloid Complexescitations
- 2019Shape memory nanocomposite fibers for untethered high-energy microengines.citations
- 2018Preparation and electrical conductivity of different fibres prepared from vertically aligned carbon nanotubes
- 2018Giant Electrostriction of Soft Nanocomposites Based on Liquid Crystalline Graphenecitations
- 2017Large scale conductive films and patterns based on carbon nanotubes and graphene liquid crystals
- 2017Giant Electrostrictive Response and Piezoresistivity of Emulsion Templated Nanocompositescitations
- 2015Graphene liquid crystal retarded percolation for new high-k materialscitations
- 2015Graphene liquid crystal retarded percolation for new high-k materialscitations
- 2015Giant Permittivity Polymer Nanocomposites Obtained by Curing a Direct Emulsioncitations
- 2013Changes of morphology and properties of block copolymers induced by carbon nanotubescitations
- 2012Conductivity and percolation of nanotube based polymer composites in extensional deformationscitations
- 2011Scalable Process for the Spinning of PDV-CArbon Nanotube composite Fiberscitations
- 2009Influence of the Spinning Conditions on the Structure and Properties of Polyamide 12/Carbon Nanotube Composite Fiberscitations
- 2009Influence of the Spinning Conditions on the Structure and Properties of Polyamide 12/Carbon Nanotube Composite Fiberscitations
- 2009Kinetics of Nanotube and Microfiber Scission under Sonicationcitations
- 2009Kinetics of nanotube and microfiber scission under sonicationcitations
- 2008High-Conductivity Polymer Nanocomposites Obtained by Tailoring the Characteristics of Carbon Nanotube Fillerscitations
- 2007Shape and Temperature Memory of Nanocomposites with Broadened Glass Transitioncitations
Places of action
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article
Graphene liquid crystal retarded percolation for new high-k materials
Abstract
International audience ; Graphene flakes with giant shape anisotropy are extensively used to establish connectedness electrical percolation in various heterogeneous systems. However, the percolation behaviour of graphene flakes has been recently predicted to be far more complicated than generally anticipated on the basis of excluded volume arguments. Here we confirm experimentally that graphene flakes self-assemble into nematic liquid crystals below the onset of percolation. The competition of percolation and liquid crystal transition provides a new route towards high-k materials. Indeed, near-percolated liquid-crystalline graphene-based composites display unprecedented dielectric properties with a dielectric constant improved by 260-fold increase as compared with the polymer matrix, while maintaining the loss tangent as low as 0.4. This performance is shown to depend on the structure of monodomains of graphene liquid-crystalline phases. Insights into how the liquid crystal phase transition interferes with percolation transition and thus alters the dielectric constant are discussed.