Bahae‐Eddine Mouloud
A5092686015- Astro and Planetary Science
- Planetary Science and Exploration
- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- Advanced Photocatalysis Techniques
- Graphite, nuclear technology, radiation studies
- Boron and Carbon Nanomaterials Research
- Covalent Organic Framework Applications
- Geophysical and Geoelectrical Methods
- Metal-Organic Frameworks: Synthesis and Applications
- Laser-induced spectroscopy and plasma
- Geological and Geophysical Studies
- Geomagnetism and Paleomagnetism Studies
- Ion-surface interactions and analysis
- Clay minerals and soil interactions
- Geology and Paleoclimatology Research
- Radioactive element chemistry and processing
École Centrale de Lille
2023-2024
Unité Matériaux et Transformations
2022-2024
Centre National de la Recherche Scientifique
2023-2024
Université de Lille
2022-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2023-2024
Abstract Samples returned from the carbonaceous asteroid (162173) Ryugu by Hayabusa2 mission revealed that is composed of materials consistent with CI chondrites and some types space weathering. We report detailed mineralogy fine‐grained samples allocated to our “Sand” team additional weathering features found on grains. The dominant a mixture Mg‐rich saponite serpentine, magnetite, pyrrhotite, pentlandite, dolomite, Fe‐bearing magnesite. These grains have comparable chondrites, showing...
Abstract Samples were recently collected from the carbonaceous asteroid (162173) Ryugu, by Japan Aerospace Exploration Agency (JAXA) Hayabusa2 mission. They resemble CI chondrites material, thus showing clear evidence of extensive aqueous alteration attested widespread presence a mixture serpentine and saponite. We present here scanning transmission electron microscopy study Ryugu dominant lithology phyllosilicate matrix at nanometer scale, which we compare with that Orgueil chondrite. In...
Abstract Airless bodies are subjected to space-weathering effects that modify the first few microns of their surface. Therefore, understanding impact on optical properties asteroids is key interpretation color variability and infrared reflectance observations. The recent Hayabusa2 sample return mission asteroid Ryugu offers opportunity study these effects, in case most abundant spectral type among main-asteroid belt, C-type objects. This employs vibrational electron energy-loss spectroscopy...
Abstract Ryugu asteroid grains brought back to the Earth by Hayabusa2 space mission are pristine samples containing hydrated minerals and organic compounds. Here, we investigate mineralogy of their phyllosilicate‐rich matrix with four‐dimensional scanning transmission electron microscopy (4D‐STEM). We have identified mapped mineral phases at nanometer scale (serpentine, smectite, pyrrhotite), observed presence Ni‐bearing pyrrhotite, serpentine polymorph as lizardite, in agreement reported...
Abstract Regolith samples returned from asteroid 162173 Ryugu by the Hayabusa2 mission provide direct means to study how space weathering operates on surfaces of hydrous asteroids. The mechanisms weathering, its effects mineral surfaces, and characteristic time scales which alteration occurs are central understanding spectroscopic properties taxonomy asteroids in solar system. Here, we investigate behavior iron monosulfides pyrrhotite (Fe 1− x S) at earliest stages weathering. Using electron...
Abstract The surface morphology of regolith grains from the C‐type asteroid Ryugu was studied in search evidence impact events on asteroid. Scanning electron microscopy revealed that ~8% C0105‐042 have a smooth one side grains. One these has striated linear grooves (striations) its surface. Transmission grain showed porous fine‐grained Mg‐Fe phyllosilicate assemblage, which is main component grains, compacted near with striations closely resembles slickenside, characteristic texture found...
Despite many efforts devoted toward the design of covalent organic frameworks (COFs) at framework level by selecting building blocks, their organization in nano to meso regimes is often neglected. Moreover, importance processability for applications has recently emerged and synthesis COF nanostructures without agglomeration still a challenge. Herein, first example hybrid COF-polymer particles which polymers are used manipulate 2D growth along specific direction reported. The study examines...