| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Yuan, Jinkai
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Flowable Electrodes from Colloidal Suspensions of Thin Multiwall Carbon Nanotubescitations
- 2023Stabilized ferroelectric NaNbO3 nanowires for lead-free piezoelectric nanocomposite applicationscitations
- 2023G raphene O xide B ased T ransparent R esins F or A ccurate 3D P rinting of C onductive M aterialscitations
- 2023High‐Energy‐Density Waterborne Dielectrics from Polyelectrolyte‐Colloid Complexescitations
- 2022Water-Processable Cellulosic Nanocomposites as Green Dielectric Films for High-Energy Storagecitations
- 2022Water-processable cellulosic nanocomposites as green dielectric films for high-energy storage ; Energy Stor. Mater.citations
- 2021Inkjet Printing Microcapacitors for Energy Storage
- 2019Absence of giant dielectric permittivity in graphene oxide materials Absence of giant dielectric permittivity in graphene oxide materialscitations
- 2019Shape memory nanocomposite fibers for untethered high-energy microengines.citations
- 2019Shape memory nanocomposite fibers for untethered high-energy microenginescitations
- 2018All-organic microelectromechanical systems integrating electrostrictive nanocomposite for mechanical energy harvestingcitations
- 2018Giant Electrostriction of Soft Nanocomposites Based on Liquid Crystalline Graphenecitations
- 2017Carbon nanotube forest based electrostatic capacitor with excellent dielectric performancescitations
- 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
Places of action
| Organizations | Location | People |
|---|
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.