A5058861385- Mass Spectrometry Techniques and Applications
- Laser-induced spectroscopy and plasma
- Advanced Combustion Engine Technologies
- Spectroscopy and Laser Applications
- Atmospheric chemistry and aerosols
- Catalytic Processes in Materials Science
- Analytical Chemistry and Chromatography
- Advanced Proteomics Techniques and Applications
- Toxic Organic Pollutants Impact
- Vehicle emissions and performance
- Advanced Chemical Physics Studies
- Molecular Spectroscopy and Structure
- Ion-surface interactions and analysis
- Combustion and flame dynamics
- Electrohydrodynamics and Fluid Dynamics
- Molecular spectroscopy and chirality
- Laser Material Processing Techniques
- Phase-change materials and chalcogenides
- nanoparticles nucleation surface interactions
- Analytical chemistry methods development
- Recycling and Waste Management Techniques
- Pharmacological Effects and Assays
- Chemical Thermodynamics and Molecular Structure
- Glass properties and applications
- Molecular Biology Techniques and Applications
Université de Lille
2012-2024
Centre National de la Recherche Scientifique
2012-2024
Laboratoire de Physique des Lasers, Atomes et Molécules
2014-2024
Laboratoire de Physique des Interfaces et des Couches Minces
2020
Laboratoire de physique des lasers
2005
Université Sorbonne Paris Nord
2001-2003
Université Paris Cité
2003
Here we describe a new instrument (SpiderMass) designed for in vivo and real-time analysis. In this ion production is performed remotely from the MS generated ions are transported to analyzer. Ion promoted by Resonant Infrared Laser Ablation (RIR-LA) based on highly effective excitation of O-H bonds water molecules naturally present most biological samples. The retrieved molecular patterns specific cell phenotypes benign versus cancer regions patient biopsies can be easily differentiated. We...
The formation and dynamics of a laser-produced aluminum plasma have been experimentally theoretically investigated. visible-emitting regions the form two structures with different lifetimes expansion velocities. first part transient ionic signal simultaneously recorded by Langmuir probe presents an oscillatory structure. A hydrodynamic model in nondifferentiable space-time has established. numerical simulation showed plume separation into patterns. Moreover, self-structuring interface...
Semi-clathrates of tetrabutylammonium bromide (TBAB) are investigated for their potential application in the CO2 capture context based on hydrate technology. The three-phase lines semi-clathrates CO2-TBAB-H2O and N2-TBAB-H2O established simultaneously with structure using situ Raman scattering performed at high pressure. preferred crystal phase obtained ambient pressure from solutions 5 40 wt % TBAB initial concentrations is shown to change upon enclathration or N2, by applying a higher...
Ex situ analyses of substances extracted from flames provide useful albeit mostly qualitative information on the formation process soot and impact exhausts environment. An experimental setup based coupling laser desorption, ionization time-of-flight mass spectrometry (LD/LI/ToF-MS) is presented in past works as an alternative means to more traditional techniques like gas chromatography (GC) characterize polycyclic aromatic hydrocarbons (PAHs) content soot. In this paper, we go one step...
Abstract The first observation of a parity‐violation effect in molecules induced by weak interactions is still dream that requires the synthesis and, eventually, resolution enantiomers well‐chosen simple chiral together with an appropriate experimental set‐up for high‐resolution spectroscopy. Performing IR spectroscopy on highly enantiomerically enriched samples bromochlorofluoromethane succeeded giving upper limit 10 −13 relative vibrational energy difference between two enantiomers. These...
The Langmuir probe is used to characterize the plasma produced by fs-laser ablation from pure metallic targets. Time dependence of current and total collected charge discussed in terms a shifted Maxwell–Boltzmann distribution function, characteristics temperature average state are calculated. Target materials various physical properties (atomic mass, thermal constants) find possible correlations with resulting parameters. By positively biasing probe, –probe voltage characteristic general...
We present an overview of IR laser resonant desorption (LRD) studies with special focus on recent developments by our group. The character the process mediated O–H, C–H, and N–H vibrational modes in 3 µm spectral range has been investigated ice, PAH ammonia samples, respectively. cryogenic binary mixtures is also presented. An interesting wavelength-selective effect found comparative IR/visible or IR/IR irradiation studies. At higher fluences and/or analyte concentration values a loss...
We present the use of a combined laser desorption/multi-photon ionization/time-of-flight mass spectrometry technique for analysis polycyclic aromatic hydrocarbon (PAH) solid samples. A thorough characterization first step (laser desorption) this experimental has been performed. By varying energy pulse, specific response each PAH evidenced pure and mixed sample desorption. This behaviour also studied with respect to fragmentation processes. Similar studies on PAHs adsorbed graphite...
The growing volume of plastics derived from electronic waste (e-waste) underscores the imperative for environmentally sustainable strategies management this waste. In light paramount importance issue, a pilot demonstrator decontamination polymers containing Brominated Flame Retardants (BFRs) has been developed. objective is to investigate potential decontaminating BFR-containing e-waste via UV-visible irradiation using rotatory laboratory operating under primary vacuum conditions. This...
Abstract. Combustion of hydrocarbons produces both particulate- and gas-phase emissions responsible for major impacts on atmospheric chemistry human health. Ascertaining the impact these emissions, especially health, is not straightforward because our relatively poor knowledge how chemical compounds are partitioned between particle gas phases. Accordingly, we propose coupling a two-filter sampling method with multi-technique analytical approach to fully characterize compositions combustion...
Formalin-fixed paraffin-embedded (FFPE) tissue has been the gold standard for routine pathology general and cancer postoperative diagnostics. Despite robust histopathology, immunohistochemistry, molecular methods, accurate diagnosis remains difficult certain cases. Overall, entire process can be time consuming, labor intensive, does not reach over 90% diagnostic sensitivity specificity. There is a growing need in onco-pathology adjunct novel rapid, accurate, reliable, diagnostically...