A5056957004- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Lubricants and Their Additives
- Semiconductor materials and devices
- Advanced Sensor and Energy Harvesting Materials
- ZnO doping and properties
- Graphene research and applications
- GaN-based semiconductor devices and materials
- Gas Sensing Nanomaterials and Sensors
- Tribology and Wear Analysis
- Graphene and Nanomaterials Applications
- Acoustic Wave Resonator Technologies
- Ferroelectric and Piezoelectric Materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Tactile and Sensory Interactions
- Ga2O3 and related materials
- High-Temperature Coating Behaviors
- nanoparticles nucleation surface interactions
- Advanced Battery Technologies Research
- Copper-based nanomaterials and applications
- Laser-Ablation Synthesis of Nanoparticles
- TiO2 Photocatalysis and Solar Cells
- Electrocatalysts for Energy Conversion
- Marine Biology and Environmental Chemistry
- Fuel Cells and Related Materials
Luxembourg Institute of Science and Technology
2017-2024
University of Toronto
2023
Institut de Recherche sur les Céramiques
2007
Transparent anti-fogging and self-cleaning coatings are of great interest for many applications, including solar panels, windshields displays or lenses to be used in humid environments. In this paper, we report on the simultaneous synthesis, at atmospheric pressure, anatase TiO2 nanoparticles low-temperature, high-rate deposition TiO2/SiO2 nanocomposite coatings. These exhibit durable super-hydrophilic photocatalytic properties. The strategy followed relies concomitant separated injections...
Abstract Molybdenum disulfide coatings have been employed as lubricants for spacecraft since the 1950s but continue to face major engineering challenges including performance in both terrestrial air and deep space vacuum environments service lifetimes on order of decades without maintenance. Co‐deposition MoS 2 with additive compounds provide enhancements some circumstances a lubricant which can perform all space‐facing long remains an ongoing problem. Herein, it is demonstrated...
Herein, we report the impact of plasma on gold nanoparticles synthesis. We used an atmospheric torch fed with aerosolized tetrachloroauric(iii) acid trihydrate (HAuCl4·3H2O) solution. The investigation showed that using pure ethanol as a solvent for precursor enabled better dispersion compared to water-containing demonstrated here deposition parameters are easy control, presenting influence concentration and time. advantage our method is no capping agent was used. assume creates carbon-based...
Abstract For the first time, plasma‐assisted inkjet printing of metal‐organic decomposition (MOD) inks is demonstrated to provide an easily up‐scalable method toward deposition highly conductive silver features on paper. Atmospheric plasma sintering methods a fast and effective alternative thermal treatment. This high‐speed, room‐temperature approach ensures immediate conversion MOD after thus overcomes wetting issues typically encountered in porous substrates—a mechanical solution chemical problem.
Abstract Standing Lamb waves in vibrating plates enable haptic interfaces. If the out‐of‐plane displacement of these exceeds 1 µm at frequencies above 25 kHz, a silent friction modulation can be created between human finger and plate. A fully transparent friction‐modulation device based on piezoelectric thin film is demonstrated. The antisymmetric mode induced 73 kHz allows for functional performance that fulfills all conditions practical use. Out‐of‐plane reaches 2.9 when 150 V unipolar...
Gallium-doped zinc oxide (GZO) films were fabricated using RF magnetron sputtering and atomic layer deposition (ALD). The latter ones demonstrate higher electrical conductivities (up to 2700 S cm–1) enhanced charge mobilities (18 cm2 V–1 s–1). morphological analysis reveals differences mostly due the very different nature of processes. film deposited via ALD shows an increased transmittance in visible range a small one infrared that leads figure merit 0.009 Ω–1 (10 times than for...
A simple and easily scalable approach toward the simultaneous synthesis deposition of conducting plasma‐polymerized 3,4‐ethylenedioxythiophene (ppEDOT) coatings is reported. Our atmospheric‐pressure dielectric barrier discharge (AP‐DBD) approach, operating at room‐temperature atmospheric‐pressure, does not involve use oxidants other than reactive oxygen species (ROS) formed by open air Ar/O 2 discharge. The oxidative polymerization EDOT confirmed using UV‐visible (UV‐vis), Raman,...
Atmospheric pressure cold DBD plasma for simultaneous synthesis of FeO x nanoparticles and their partial graphenic encapsulation using ethanol as carbon source.
An inverted cylindrical magnetron sputtering reactor mode was used for TiO2 thin films deposition. The high voltage delivered to the target in dc and pulsed at low frequency (250 Hz) reach power impulse (HiPIMS) regimes obtain subsequent higher plasma ionization rates. Time-resolved electrical optical characterizations of discharge were performed layer's chemistry, morphology microstructure characterized using x-ray photoelectron spectroscopy, scanning electron microscopy, atomic force...
This work focuses on the fabrication of transparent piezoelectric transducers glass substrates for ultrasonic actuation. Transparent Lead Titanate Zirconate (PZT) thin films are grown following a sol-gel route and InterDigital Electrodes (IDE) patterned by photolithography. The electrodes design aims to optimize volume active material together with transparency actuator stack. is used in d <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">33</sub>...
In situ formation and direct decoration of Au NPs on TiO 2 using an atmospheric pressure DBD plasma torch at low temperature.
Abstract The straightforward synthesis and application of conductive corrosion‐protective composite coatings suitable for the preparation bipolar plates proton exchange membrane fuel cells (PEMFCs) are achieved by a scalable solvent‐free atmospheric plasma deposition process. Small three‐dimensional (3D) carbon black nanoparticles large two‐dimensional (2D) natural graphite flakes investigated independently together as fillers. It is demonstrated that dual‐sized fillers strategy...
The growth of alumina (Al2O3) films by reactive magnetron sputtering in oxidizing atmosphere is complicated due to the difficulty keep process stable within transition zone and formation insulating layers on target, which may lead arcing events. To minimize those issues, an active feedback control was explored deposit Al2O3 thin two sources: high-power impulse (HiPIMS) mid-frequency (MF) at three different powers (2000, 2500 3500 W) deposition temperatures (200 450ºC). A combination...
Space Lubricants In article number 2110429, Aurélien Saulot, Tobin Filleter, Guillaume Colas, and co-workers engineer a high-performance space lubricant for the extreme environments faced by spacecrafts. The co-deposition of MoS2 with tantalum produces synergistic effect where preferentially oxidizes in terrestrial enhances lubrication deep vacuum, resulting low friction wear despite harsh conditions seen