A5050968400- Magnetic confinement fusion research
- Metal and Thin Film Mechanics
- Fusion materials and technologies
- Plasma Diagnostics and Applications
- Diamond and Carbon-based Materials Research
- Ion-surface interactions and analysis
- Plasma Applications and Diagnostics
- Surface Modification and Superhydrophobicity
- Particle accelerators and beam dynamics
- Electrohydrodynamics and Fluid Dynamics
- Atmospheric Ozone and Climate
- Superconducting Materials and Applications
- Electronic and Structural Properties of Oxides
- Electrospun Nanofibers in Biomedical Applications
- Semiconductor materials and devices
- Ferroelectric and Negative Capacitance Devices
- Graphene research and applications
- Carbon Nanotubes in Composites
- Laser-Plasma Interactions and Diagnostics
- Ferroelectric and Piezoelectric Materials
- Advanced Memory and Neural Computing
- Multiferroics and related materials
- Atmospheric chemistry and aerosols
- Astro and Planetary Science
- Ionosphere and magnetosphere dynamics
Plasmionique (Canada)
2016-2025
Charité - Universitätsmedizin Berlin
2024
Université de Sherbrooke
2021
Fermi National Accelerator Laboratory
2021
Institut National de la Recherche Scientifique
1993-2009
Université du Québec à Montréal
2009
Universidade de São Paulo
2009
Université de Montréal
2009
Centre National de la Recherche Scientifique
2005
National Agency for New Technologies, Energy and Sustainable Economic Development
2001
In recent years, experimental demonstration of ferroelectric tunnel junctions (FTJ) based on perovskite barriers has been reported. However, integrating these materials into conventional silicon memory technology remains challenging due to their lack compatibility with the complementary metal oxide semiconductor process (CMOS). This communication reports fabrication an FTJ a CMOS-compatible barrier Hf0.5Zr0.5O2 (6 unit cells thick) equally TiN electrode. Analysis by grazing angle incidence...
In the field of regenerative medicine, nanoscale physical cuing is clearly becoming a compelling determinant cell behavior. Developing effective methods for making nanostructured surfaces with well-defined physicochemical properties thus mandatory rational design functional biomaterials. Here, we demonstrate versatility simple chemical oxidative patterning to create unique nanotopographical that influence behavior various types, modulate expression key determinants activity, and offer...
The present work reports the fabrication of a ferroelectric tunnel junction based on CMOS compatible 2.8 nm-thick Hf0.5Zr0.5O2 barrier. It presents comprehensive study electronic properties Pt/Hf0.5Zr0.5O2/Pt system by X-ray photoelectron and UV-Visible spectroscopies. Furthermore, two different scanning probe techniques (Piezoresponse Force Microscopy conductive-AFM) were used to demonstrate behavior ultrathin layer as well typical current-voltage characteristic device. Finally, direct...
Multiple NaNbO3 nanoplates are created within Nb2O5 nanotubes forming a unique class of heterostructure combining ferroelectric and semiconducting nanomaterials. Local piezoelectric studies on show clear behavior (see figure), while the semiconductive properties host allows for switching electrical conductivity by an external electric field.
Abstract This work examines the functionalization of sugar maple ( Acer saccharum ) and black spruce Picea mariana wood surfaces using an atmospheric‐pressure dielectric barrier discharge in He He/HMDSO (hexamethyldisiloxane) gas mixtures. Wood samples were placed on one electrodes plasma was sustained by applying a 3.5 kV peak‐to‐peak voltage at 12 kHz. Analysis stability through current–voltage I – V characteristics revealed filamentary behaviour, sharp contrast with homogeneous obtained...
We report the successful demonstration of a hybrid system that combines pulsed laser deposition (PLD) and magnetron sputtering (MS) to deposit high quality thin films. The PLD MS simultaneously use same target, leading an enhanced rate. performance this technique is demonstrated through titanium dioxide bismuth-based perovskite oxide Bi2FeCrO6 (BFCO) films on Si(100) LaAlO3 (LAO) (100). These specific oxides were chosen due their functionalities, such as multiferroic photovoltaic properties...
ABSTRACT Mg alloys have recently been investigated and optimized for the development of biodegradable implants orthopedic, dental, vascular, other applications. However, their rapid degradation in a physiological environment remains main obstacle to development. In this work, effects nitrogen hydrogen plasma treatments on surface properties corrosion behavior an Mg‐2Y‐1Zn‐1Mn (WZM211) alloy were investigated. Plasma treatment effectively modified WZM211 by removing original oxide layer,...
This work examines the adhesion properties of sugar maple (Acer saccharum) and black spruce (Picea mariana) wood surfaces following their exposure to a dielectric barrier discharge at atmospheric pressure. Freshly sanded samples were treated in Ar, O2, N2 CO2-containing plasmas then coated with waterborne urethane/acrylate coating. In case wood, pull-off tests showed improvement up 35% after N2/O2 (1:2) plasma for 1 s. For same time, improvements on ∼25% obtained Ar/O2 (1:1) CO2/N2 mixtures....
Biomedical electronics research targets both wearable and biocompatible electronic devices easily adaptable to specific functions. To achieve such goals, stretchable organic materials are some of the most intriguing candidates. Herein, we develop highly poly-(3,4-ethylenedioxythiphene) (PEDOT) doped with tosylate (PEDOT:Tos) nanofibers. A two-step process involving electrospinning a carrier polymer (with oxidant) vapor phase polymerization was used produce fibers on polydimethylsiloxane...
Non-toxic organosilicon coatings with hydrophobic properties were deposited on Kraft paper films using atmospheric-pressure dielectric barrier discharge. In order to assess the applicability of plasma-deposited coating in food packaging industry, its stability different liquids (i.e., simulants) was studied. Chemical analyses reveal that simulants, namely, de-ionized water, acetic acid, ethanol, and heptane, do not significantly alter chemical composition or hydrophobicity coatings. Based...
An atmospheric-pressure plasma sustained by an electromagnetic surface wave (SW) in the microwave regime combined with a bubbler/flash evaporator for injection of liquid precursors was used to produce organosilicon and organotitanium nanopowders. Following addition hexamethyldisiloxane (HMDSO) vapors nominally pure argon plasma, optical emission spectra revealed apparition strong C2 molecular bands along Si Balmer H lines. Such features were not observed our Ar/HMDSO discharges controlled...
Diamond‐like carbon (DLC) thin films constitute proven protective coatings due to their outstanding mechanical and tribological properties, combined with a relative chemical inertness long‐term stability. These make them particularly attractive protect metallic medical implants from corrosion erosion. However, lack of adhesion between DLC surfaces is recurrent problem poor interactions the native oxide layer. An effective strategy overcome these issues consists in building interfacial...
The requirements of nanocomposite thin films, having non-aggregated nanoparticles homogeneously dispersed in the matrix, have been realized using a new method Direct Liquid Reactor-Injector (DLRI) nanoparticles. In this approach, unlike conventional aerosol-assisted plasma deposition, are synthesized before their injection as an aerosol into plasma. our experiments, we used two different reactors, namely asymmetric low-pressure RF reactor and parallel plate dielectric barrier discharge at...
An improved Ohmic confinement phase has been observed in the STOR-M tokamak [Plasma Physics and Controlled Nuclear Fusion Research, 1988 (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 323] after application of a turbulent heating (TH) pulse. This is characterized by (a) increased n̄e, (b) reduced Hα radiation from edge, (c) density magnetic fluctuations at (d) steeper profile (e) more negative radial electric field. Almost complete suppression sawtooth oscillations during...
Dense, vertically aligned multiwall carbon nanotubes were synthesized on TiN electrode layers for infrared sensing applications. Microwave plasma-enhanced chemical vapor deposition and Ni catalyst used the synthesis. The resultant characterized by SEM, AFM, TEM. Since length of influences sensor characteristics, we study in details effects changing thickness physical properties nanotubes. In this paper, report observation a threshold about 4 nm, when average CNT growth rate switches from an...
Graphene films were exposed to low-pressure capacitively coupled (E-mode) and inductively (H-mode) argon radio frequency plasmas investigate damage formation by very-low-energy ion irradiation. In the H-mode, plasma parameters assessed a Langmuir probe sampling mass spectrometry determine conditions of fixed fluence but with different average energies. The populations metastable resonant atoms also measured optical absorption spectroscopy their contribution total energy flux during...
Electrically insulated divertor plates are used on TdeV (Tokamak de Varennes) [18th EPS Conference Controlled Fusion and Plasma Physics Berlin (European Physical Society, Petit-Lancy, 1991), Vol. 15C, Part I, pp. 1–141] to produce various biasing configurations, which can be decomposed into two basic modes. biasing, with a radial electric field Er in the scrape-off layer (SOL), is most promising for applications. The produced particular plate geometry, causing nonambipolar current particle...