693.932 PEOPLE
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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Petrov, R. H. | Madrid |
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| Azam, Siraj |
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| Azevedo, Nuno Monteiro |
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Poulin, Philippe
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Topics
Publications (55/55 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
- 2022Nanosheet-Stabilized Emulsionscitations
- 2022In situ control of graphene oxide dispersions with a small impedance sensorcitations
- 2021Inkjet Printing Microcapacitors for Energy Storage
- 2020Nanosheet-stabilized emulsions
- 2020Lignin-graphene oxide inks for 3D printing of graphitic materials with tunable densitycitations
- 2019Structuration of lignin-graphene oxide based carbon materials through liquid crystallinitycitations
- 2019Shape memory nanocomposite fibers for untethered high-energy microengines.citations
- 2019Shape memory nanocomposite fibers for untethered high-energy microenginescitations
- 2018Preparation and electrical conductivity of different fibres prepared from vertically aligned carbon nanotubes
- 2018An effective in situ reduction strategy assisted by supercritical fluids for the preparation of graphene - polymer compositescitations
- 2018All-organic microelectromechanical systems integrating electrostrictive nanocomposite for mechanical energy harvestingcitations
- 2018Giant Electrostriction of Soft Nanocomposites Based on Liquid Crystalline Graphenecitations
- 2017Large scale conductive films and patterns based on carbon nanotubes and graphene liquid crystals
- 2017Fracture related mechanical properties of low and high graphene reinforcement of epoxy nanocompositescitations
- 2017Giant Electrostrictive Response and Piezoresistivity of Emulsion Templated Nanocompositescitations
- 2016Prospects of Supercritical Fluids in Realizing Graphene-Based Functional Materials.citations
- 2016Prospects of Supercritical Fluids in Realizing Graphene-Based Functional Materials.citations
- 2016Carbon Nanotube Microfiber Actuators with Reduced Stress Relaxationcitations
- 2016Cysteine residues reduce the severity of dopamine electrochemical foulingcitations
- 2015Graphene liquid crystal retarded percolation for new high-k materialscitations
- 2015Graphene liquid crystal retarded percolation for new high-k materialscitations
- 2015Synthesis of a Conductive Copolymer and Phase Diagram of Its Suspension with Single-Walled Carbon Nanotubes by Microfluidic Technologycitations
- 2015Giant Permittivity Polymer Nanocomposites Obtained by Curing a Direct Emulsioncitations
- 2015Method for preparing macroscopic fibers of TiO2 by continuous one-way extrusion, fibers obtained and uses.
- 2015Method for preparing macroscopic fibers of TiO2 by continuous one-way extrusion, fibers obtained and uses.
- 2015Advanced thermo-mechanical characterization of organic materials by piezoresistive organic resonatorscitations
- 2015Wet-Spun Bioelectronic Fibers of Imbricated Enzymes and Carbon Nanotubes for Efficient Microelectrodescitations
- 2014Thermoelectrical Memory of Polymer Nanocompositescitations
- 2014Sensitivity enhancement of a flexible MEMS strain sensor by a field effect transistor in an all organic approachcitations
- 2013Changes of morphology and properties of block copolymers induced by carbon nanotubescitations
- 2013ZnO/PVA Macroscopic Fibers Bearing Anisotropic Photonic Propertiescitations
- 2013A chemically reactive spinning dope for significant improvements in wet spun carbon nanotube fibrescitations
- 2013Improved strain sensing performance of glass fiber polymer composites with embedded pre-stretched polyvinyl alcohol-carbon nanotube fiberscitations
- 2013A chemically reactive spinning dope for significant improvements in wet spun carbon nanotube fibrescitations
- 2012Phase Behavior of DNA-Based Dispersions containing Carbon Nanotubes: Effects of Added Polymers and Ionic Strength on Excluded Volumecitations
- 2012Phase Behavior of DNA-Based Dispersions containing Carbon Nanotubes: Effects of Added Polymers and Ionic Strength on Excluded Volumecitations
- 2012ZnO/PVA Macroscopic Fibers Bearing Anisotropic Photonic Propertiescitations
- 2012Conductivity and percolation of nanotube based polymer composites in extensional deformationscitations
- 2011Scalable Process for the Spinning of PDV-CArbon Nanotube composite Fiberscitations
- 2010Damage detection of glass fiber reinforced composites using embedded PVA-carbon nanotube (CNT) fiberscitations
- 2010Nanotube fibers for electromechanical and shape memory actuatorscitations
- 2010Structural health monitoring of glass fiber reinforced composites using embedded carbon nanotube (CNT) 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
- 2007Shape and Temperature Memory of Nanocomposites with Broadened Glass Transitioncitations
- 2007Thermo-electrical properties of PVA-nanotube composite fiberscitations
- 2007Liquid Crystal Behavior of Single-Walled Carbon Nanotubes Dispersed in Biological Hyaluronic Acid Solutionscitations
- 2007Liquid Crystal Behavior of Single-Walled Carbon Nanotubes Dispersed in Biological Hyaluronic Acid Solutionscitations
- 2006Nanoscale surface of carbon nanotube fibers for medical applications: Structure and chemistry revealed by TOF-SIMS analysiscitations
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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.