A5037321981- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- Graphene research and applications
- Advancements in Battery Materials
- Tribology and Wear Analysis
- Surface Modification and Superhydrophobicity
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Carbon Nanotubes in Composites
- Lubricants and Their Additives
- Plasma Diagnostics and Applications
- Catalytic Processes in Materials Science
- Plasma Applications and Diagnostics
- Graphene and Nanomaterials Applications
- Semiconductor materials and devices
- Lignin and Wood Chemistry
- Silicone and Siloxane Chemistry
- Catalysis for Biomass Conversion
- Copper Interconnects and Reliability
- Biofuel production and bioconversion
- Electrohydrodynamics and Fluid Dynamics
- Polymer Nanocomposite Synthesis and Irradiation
- Polymer Science and Applications
- Advanced MEMS and NEMS Technologies
- Membrane Separation Technologies
Flemish Institute for Technological Research
2010-2023
Directorate-General for Energy
2023
Strategic Initiative Materials in Flanders
2017
Freudenberg (Germany)
2008
KU Leuven
1998-1999
If graphene is ever going to live up the promises of future nanoelectronic devices, an easy and cheap route for mass production essential requirement. A way extend capabilities plasma-enhanced chemical vapour deposition synthesis freestanding few-layer presented. Micrometre-wide flakes consisting four six atomic layers stacked sheets have been synthesized by controlled recombination carbon radicals in a microwave plasma. simple highly reproducible technique essential, since resulting can be...
The electric field emission behavior of vertically aligned few-layer graphene was studied in a parallel plate–type setup. Few-layer synthesized the absence any metallic catalyst by microwave plasma enhanced chemical vapor deposition with gas mixtures methane and hydrogen. deposit consists nanostructures that are several micrometers wide, highly crystalline stacks four to six atomic layers graphene, substrate surface high density network. is found be good emitter, characterized turn-on fields...
A promising method for the production of few-layer graphene (FLG) is microwave plasma-enhanced chemical vapour deposition (MW PECVD). However, growth mechanism PECVD-synthesized FLG not completely understood. The aim this work was to investigate initial stages process deposited by MW PECVD on several substrates (quartz, silicon, platinum). thin films were characterized angle-resolved x-ray photoelectron spectroscopy (ARXPS), electron backscattered diffraction (EBSD), scanning microscopy...
The influence of physicochemical cellulose parameters and purity on the heterogeneous hydrolytic hydrogenation (ligno)cellulose to hexitols.
Abstract Sulfur particles coated by activation of metal alkoxide precursors, aluminum–sulfur (Alu–S) and vanadium–sulfur (Van–S), were produced dielectric barrier discharge (DBD) plasma technology under low temperature ambient pressure conditions. We report a safe, solvent‐free, low‐cost, low‐energy consumption coating process that is compatible for sustainable up‐scaling. NMR, XPS, SEM, XRD characterization methods used to determine the chemical characteristics superior behavior Li–S cells...
A new low-cost long-wavelength infrared bolometer camera system is under development. It designed for use with an automatic vision algorithm as a sensor to detect vulnerable road users in traffic. Looking 15 m front of the vehicle it can case unavoidable impact activate brake assist or other deployable protection system. To achieve our cost target below €100 we evaluate required performance and reduce sensitivity 150 mK pixel resolution 80 x 30. We address all main drivers size production...
Sulfur particles with a conductive polymer coating of poly(3,4-ethylene dioxythiophene) "PEDOT" were prepared by dielectric barrier discharge (DBD) plasma technology under atmospheric conditions (low temperature, ambient pressure). We report solvent-free, low-cost, low-energy-consumption, safe, and low-risk process to make the material development production compatible for sustainable technologies. Different protocols developed produce PEDOT-coated sulfur powders electrical conductivity in...
A one-dimensional (1-D) fluid model is developed for an RF acetylene discharge. In total, 24 species (neutrals, radicals, electrons, and ions) are considered. For every species, a mass balance equation solved. Further, the electron energy Poisson also Reactions taken into account include 19 electron-neutral, one ion-neutral, 17 neutral-neutral reactions. The reaction rate coefficients of ion-neutral reactions from literature. electron-neutral depend strongly on average energy, are,...
Abstract A cold atmospheric pressure plasma jet (PlasmaSpot) was developed in our department and successfully used to deposit siloxane‐based coatings on elastomer materials for tribological improvement. This paper reports the deposition of a low‐friction coating an HNBR sample using (3‐aminopropyl)triethoxysilane (APEO) as precursor. The chemical structure examined with XPS FTIR spectroscopy. Monitoring top surface by optical microscopy showed 2–3 µm wide cracks appearing some days after...
A comparison is made between a one-dimensional (1D) and two-dimensional (2D) self-consistent fluid model for methane rf plasma, used the deposition of diamond-like carbon layers. Both models consider same species (i.e., 20 in total; neutrals, radicals, ions, electrons) electron–neutral, ion–neutral, neutral–neutral reactions. The reaction rate coefficients different electron–neutral reactions depend strongly on average electron energy, are obtained from simplified Boltzmann equation. All...
Sulfur particles were coated with conductive polymer layers by dielectric barrier discharge (DBD) plasma technology under atmospheric conditions (ambient pressure and low temperature). The DBD process is a dry sustainable (solvent-free, limited energy consumption) technique compatible upscaling. Different sulfur materials produced labeled as "PEDOT-S" [poly(3,4-ethylene dioxythiophene-sulfur)], "PANI-S" (polyaniline-sulfur), "PTs-S" (polythiophene-sulfur), "PPy-S" (polypyrrole-sulfur)....
A two-step catalyst annealing process is developed in order to control the diameter of nickel particles for growth carbon nanotubes (CNTs) by microwave plasma-enhanced chemical vapour deposition (MW PECVD). Thermal a continuous film hydrogen (H2) environment first step found be insufficient formation nanometre-size, high-density particles. In second step, H2 MW plasma treatment decreases factor two and increases particle density five. An x-ray photoelectron spectroscopy study after each...