A5041207714- Carbon Nanotubes in Composites
- Graphene research and applications
- Supercapacitor Materials and Fabrication
- Gas Sensing Nanomaterials and Sensors
- Mechanical and Optical Resonators
- Advancements in Battery Materials
- Advanced Chemical Sensor Technologies
- Analytical Chemistry and Sensors
- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Advanced Memory and Neural Computing
- 2D Materials and Applications
- Neuroscience and Neural Engineering
- Nanowire Synthesis and Applications
- Advanced MEMS and NEMS Technologies
- Transition Metal Oxide Nanomaterials
- Topological Materials and Phenomena
- Electrochemical sensors and biosensors
- Diamond and Carbon-based Materials Research
- Nanopore and Nanochannel Transport Studies
- Electrospun Nanofibers in Biomedical Applications
- Quantum-Dot Cellular Automata
- Photonic and Optical Devices
- Electrohydrodynamics and Fluid Dynamics
- Advanced battery technologies research
Thales (France)
2015-2025
Laboratoire de Chimie
2017-2022
Laboratoire Albert Fert
2010-2020
Thales (Australia)
2015-2020
Centre de Nanosciences et de Nanotechnologies
2009-2016
Centre National de la Recherche Scientifique
2001-2015
CEA LITEN
2010
CEA Grenoble
2010
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2010
University of Genoa
1998-2002
Amongst other requirements, a good anode for Li-ion battery applications must exhibit dimensional stability upon Li insertion, as well chemical inertness with respect to the electrolyte. This latter characteristic is usually provided by so-called solid electrolyte interphase (SEI), passivating film that formed at end of first lithiation step, originating from partial reduction and salt. However, silicon, which exhibits highest known capacity alloying, possesses none above attributes when...
Advancements in electrochemical double-layer capacitor (EDLC) technology require the concomitant use of novel efficient electrode materials and viable manufacturing methods. Cost-effectiveness, scalability sustainability are key-drivers for fulfilling product development chain accepted by worldwide legislations. Herein, we report a scalable sprayable "green" material-based ink based on activated carbon single-/few-layer graphene (SLG/FLG) flakes. We show that, contrary to commercial reduced...
Here we report on technology developments implemented into the Graphene Flagship European project for integration of graphene and graphene-related materials (GRMs) energy application devices. Many technologies investigated so far aim at producing composite associating or GRMs with either metal semiconducting nanocrystals other carbon nanostructures (e.g., CNT, graphite). These composites can be used favourably as hydrogen storage solar cell absorbers. They also provide better performing...
In this study, we present a lead-free, piezoelectric energy harvester capable of generating power in the milliwatt range. The consists four layers polyvinylidene difluoride polymer, bonded to cantilever with tip mass. cantilever’s resonance frequency was measured at 13.4 Hz. are connected parallel, resulting total capacitance 27 nF. At resonance, under open-circuit conditions, generates nearly 90 Vpp when subjected an acceleration 1 g. When impedance is matched, maximum output reaches 2.4...
Abstract The bulky structure of current power sources is hindering the widespread development next‐generation electronics. Here, we propose a graphene/single wall carbon nanotube (SWCNT) hybrid for realization high‐performance supercapacitors. devices are assembled by using 2 cm area graphene/SWCNT electrodes, designed combining scalable solution‐processing method (e.g., liquid phase exfoliation pristine graphite and de‐bundling SWCNTs) with dynamic spray‐gun deposition, an aqueous...
The Systemic Lupus Activity Measure (SLAM) is a system proposed by rheumatologists to measure disease activity in their patients with systemic lupus erythematosus (LE). It involves scoring group of clinical symptoms and laboratory findings, the maximum possible score being 84. In LE, mid-point between 9 12. We applied SLAM 176 cutaneous LE. Ninety-seven had localized discoid LE (L-DLE), 59 disseminated (D-DLE) 20 subacute (SCLE). Eighty-five low (0-4 points), 72 mildly active (5-9 15...
This contribution deals with all-printed infrared sensors fabricated using multiwalled carbon nanotubes deposited on a flexible polyimide substrate. A high responsivity of up to 1.2 kV/W is achieved at room temperature in ambient air. We evidence strong dependence the device transduction mechanism surrounding atmosphere, which can be attributed bolometric effect interference water molecule desorption upon irradiation.
Abstract Carbon nanomaterials exhibit unique morphological and physical properties. When used as fillers in various matrices such polymers, they can provide enhanced electrical, thermal mechanical characteristics. The emerging field of sensing technologies has witnessed remarkable advancements, resulting from the integration carbon-based nanocomposites. This paper presents a comprehensive review latest developments key nanocomposite sensors. First, properties carbon are reviewed covering...
This contribution deals with the fabrication of electrodes and supercapacitor cells using a new dynamic air-brush deposition technique. method yields highly uniform mats finely tuned thickness weight in completely reproducible way. Using this technique, we analyze effect mixtures CNTs graphite on electrode cell properties (energy, power capacitance) observe that mixture 75% 25% CNTs, increase by factor 2.5 compared to bare CNT-based electrodes. We also electrodes' first capacitance specific...
Single walled carbon nanotube (SWCNT) networks present outstanding potential for the development of SWCNT-based gas sensors. Due to complexity transport properties this material, physical mechanisms at stake during exposure are still under debate. Previously suggested charge transfer between molecules and SWCNT Schottky barrier modulation. By comparing electrical measurements with an analytical model based on modulation, we demonstrate that one mechanism or other is predominant depending...
High surface area carbons are so far the best materials for industrial manufacturing of supercapacitor electrodes. Here we demonstrate that pine cones, an abundant bio-precursor currently considered as a waste in wood industry, can be used to prepare activated with BET exceeding 3000 m2 g-1. It is found same KOH activation procedure applied reduced graphene oxide (rGO) and cone derived biochars results carbon similar area, pore size distribution performance (SC) argued "activated graphene"...
This paper deals with the fabrication of carbon nanotube field effect transistors (CNTFETs) for gas sensing applications. Such devices exploit extremely sensitive change Schottky barrier heights between nanotubes (CNTs) and drain/source metal electrodes: adsorption creates an interfacial dipole that modifies work function so band bending height at contacts. Our aim is to achieve fingerprinting a specific using CNTFET based sensor array. concept on fact electrode strictly depends metal/gas...
Abstract The dynamic spray-gun deposition method was developed in 2006 to fabricate field effect transistors based on random arrays of carbon nanotubes (CNTs) for gas sensing applications. Thanks this method, we were able hundreds operational devices a reproducible way that integrated electronic chips. Following first implementation, decided widen the application technique Energy and specifically fabrication supercapacitors. In context, demonstrated 2012 nanostructured electrodes...
Abstract A spray gun machine was used to deposit high‐surface‐area supercapacitor electrodes using green non‐toxic aqueous dispersions based on different kinds of high specific surface area nanostructured carbon materials: activated graphene (a‐rGO) and (AC). Tuning the conditions dispersion formulation allowed us achieve good adhesion stainless‐steel current collectors in combination with a satisfactory mechanical stability electrodes. The approximately 2000 m 2 /g measured directly a‐rGO...
Abstract Majorana fermions are a fascinating class of particles with unique and intriguing properties: they their own antiparticles, as first theorized by the Italian physicist Ettore in 1937. In recent decades, research condensed matter physics shows theoretically that certain exotic states matter, such topological superconductors, pairs can emerge bound at defects or interfaces, known Zero Modes (MZMs). They behave like non-local anyons could be used decoherence-protected qubits. After...
This work presents simulated output characteristics of gas sensor transistors based on graphene nanoribbon (GNRFET). The device studied in this is a new generation sensing devices, which are easy to use, ultracompact, ultrasensitive, and highly selective. We will explain how the exposure changes conductivity nanoribbon. equations GNRFET model include Poisson equation weak nonlocality approximation with proposed parameters. As we have developed as platform for detection sensor, analyze...
This contribution deals with the state of art studies concerning fabrication electric double-layer capacitors (EDLCs) also called super- or ultracapacitors and obtained using carbon nanotubes (CNTs) without exploiting Faradic reactions. From first work published in 1997, EDLCs fabricated as constitutive material for electrodes showed very interesting characteristics. It appeared that they could potentially outperform traditional technologies based on activated carbon. Different methods to...