A5021307350- Plasma Applications and Diagnostics
- Plasma Diagnostics and Applications
- Catalytic Processes in Materials Science
- Nuclear materials and radiation effects
- Ion-surface interactions and analysis
- Dust and Plasma Wave Phenomena
- Gas Dynamics and Kinetic Theory
- Spectroscopy and Laser Applications
- CO2 Reduction Techniques and Catalysts
- Diamond and Carbon-based Materials Research
- Catalysts for Methane Reforming
- Calibration and Measurement Techniques
- Carbon Dioxide Capture Technologies
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Microstructure and mechanical properties
- Copper Interconnects and Reliability
- Electronic and Structural Properties of Oxides
- Advanced Condensed Matter Physics
- Advanced Image and Video Retrieval Techniques
- Solar and Space Plasma Dynamics
- Atmospheric aerosols and clouds
- Geophysics and Gravity Measurements
- High-pressure geophysics and materials
- Image Retrieval and Classification Techniques
University of Antwerp
2016-2018
Centre National de la Recherche Scientifique
1998-2001
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2001
Microwave plasmas are one of the most promising techniques for CO2 conversion into value-added chemicals and fuels since they very energy efficient. Nevertheless, experiments show that this high efficiency is only reached at low pressures significantly drops toward atmospheric pressure, which a clear limitation industrial applications. In paper, we use zero-dimensional reaction kinetics model to simulate microwave plasma in pressure range from 50 mbar 1 bar, order evaluate reasons decrease...
In recent years there has been growing interest in the use of plasma technology for CO2 conversion. To improve this application, a good insight into underlying mechanisms is great importance. This can be obtained from modeling detailed chemistry order to understand chemical reaction pathways leading conversion (either pure form or mixed with another gas). Moreover, practice, several reactor types are being investigated conversion, so addition it essential able model these geometries that...
Plasma-based CO 2 conversion is worldwide gaining increasing interest.A large research effort devoted to improving the energy efficiency.For this purpose, it very important understand underlying mechanisms of conversion.The latter can be obtained by computer modeling, describing in detail behavior various plasma species and all relevant chemical processes.However, accuracy modeling results critically depends on assumed input data, like cross sections.This especially true for section electron...
Although CO 2 conversion by plasma technology is gaining increasing interest, the underlying mechanisms for an energy-efficient process are still far from understood.In this work, a reduced non-equilibrium chemistry set, based on level lumping of vibrational levels, proposed and reliability levellumping method tested self-consistent zero-dimensional code.A severe reduction number equations to be solved achieved, which crucial able model plasmas 2-dimensional models.Typical conditions...
CO2 conversion by a gliding arc plasma is gaining increasing interest, but the underlying mechanisms for an energy-efficient process are still far from understood. Indeed, chemical complexity of non-equilibrium poses challenge modeling due to huge computational load. In this paper, one-dimensional (1D) model developed in cylindrical frame, with detailed chemistry set, including vibrational kinetics up dissociation limit. The solves set time-dependent continuity equations based on reactions,...
Low-temperature plasma chemical kinetic models are particularly important to the community. These typically require dozens of inputs, especially rate coefficients. The latter not always precisely known and it is surprising that error on coefficient data can propagate model output. In this paper, we present a uses N = 400 different combinations coefficients based uncertainty attributed each coefficient, giving good estimation output due We demonstrate varies lot with conditions type...
An Ar plasma sustained by a surfaguide wave launcher is investigated at intermediate pressure (200–2667 Pa). Two 2D self‐consistent models (quasi‐neutral and bulk‐sheath) are developed benchmarked. The complete set of electromagnetic fluid equations the boundary conditions presented. transformation from local reference frame, that is, moving with or when gas flow zero, to laboratory accounting for flow, discussed. range extended down 80 Pa experimental measurements. electron temperature...
One of the main issues in plasma chemistry modeling is that cross sections and rate coefficients are subject to uncertainties, which yields uncertainties results hence hinders predictive capabilities. In this paper, we reveal impact these on model predictions plasma-based dry reforming a dielectric barrier discharge. For purpose, performed detailed uncertainty analysis sensitivity study. 2000 different combinations coefficients, based from log-normal distribution, used predict output. The...
Abstract Tin oxide nanometric powders have been irradiated with several swift heavy ions (Ar, Cd, Ta, Pb and U) observed by transmission electron microscopy (TEM) high-resolution (HREM). Except for Ar ions, cylindrical tracks are visible at low fluences. The mean track radius is all the more important since electronic stopping power S e high. Furthermore, high irradiating (Pb, Ta create holes while, in case of Cdion irradiations, cores remain crystallized a difference contrast from...
ALTIUS (Atmospheric Limb Tracker for the Investigation of Upcoming Stratosphere) is an atmospheric limb mission being implemented in ESA's Earth Watch programme and planned launch 2026. The instrument consists three imagers: UV (250-355 nm), VIS (440-675 nm) NIR (600-1040 channels. Each channel able to take a snapshot scene independently other two channels, at desired wavelength with requested acquisition time. agility allows series high vertical resolution observations wavelengths carefully...
ALTIUS (Atmospheric Limb Tracker for the Investigation of Upcoming Stratosphere) is an atmospheric limb mission being implemented in ESA's Earth Watch programme and planned launch 2026. The primary objective to measure high-resolution stratospheric ozone concentration profiles. Royal Belgian Institute Space Aeronomy (BISA) responsible development retrieval algorithms ALTIUS. In remote sensing, use spectroscopic measurement data determine species concentrations. While a crucial aspect they...
ALTIUS (Atmospheric Limb Tracker for the Investigation of Upcoming Stratosphere) is an atmospheric limb mission being implemented in ESA's Earth Watch programme and planned launch early 2026. The primary objective to measure high-resolution stratospheric ozone concentration profiles. Secondary objectives are retrievals aerosols particle density, NO2, water vapor other minor species concentrations.This innovative instrument consists three spectral imagers: UV (250-355 nm), VIS (440-675 nm)...
Narrow field-of view spectral measurements of twilight sky brightness as a function solar zenith angle in the 89°-95° range allow to retrieve lower stratospheric and tropospheric aerosol extinction profiles. The were carried out over Tbilisi, Georgia, South Caucasus during 2021-2022 700-800 nm wavelength using SBIG ST9 CCD camera SGS spectrograph. Monte Carlo code Siro, developed Finnish Meteorological Institute was used design forward model. Aerosol profiles at 780...