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Institut des Matériaux de Paris Centre
IMPC - Fédération de Recherche 2482

La page personnelle de David Montero

Domaine d’expertise

David Montero est responsable d’un microscope électronique à balayage de type SEM-FEG (Hitachi SU-70) et d’un système de microanalyse EDX (Oxford X-Max 50 mm2).

Sa mission principale est la réalisation d’observations et d’analyses pour les besoins en caractérisation de matériaux des laboratoires de l’Institut des Matériaux de Paris Centre FR2482. Il en assure également la gestion et la maintenance pour une utilisation optimale de l’instrument.

Le service est ouvert aux autres besoins scientifiques extérieurs à la fédération.

Il est installé sur le campus de Jussieu.

Le contacter pour l’accès à l’équipement.

Coordonnées

Téléphone : 01 44 27 52 20
Courriel(s) : david.montero@upmc.fr

Fonction et rattachement

Ingénieur d'études CNRS

Publications

1) Evolution Mechanisms of T91 Steel in Subcritical Conditions and Role of an Internal Oxidation Zone
Seifallah Fetni, David Montero, Chokri Boubahri, Dalil Brouri, Jalel Briki

Corrosion of a T91 steel tube, used in subcritical conditions in an oil power plant, was characterized mainly through SEM, TEM, EDX and DRX analyses. Severe oxidation and carburization took place in both the outer (boiler) and inner (steam) wall sides. The nature and morphology of the oxide scale multilayer structure (hematite, magnetite and spinel) depended on the environment exposure. Specific attention was given to the internal oxidation zone at the oxide/metal interface. Diffusion of chromium during the oxidation process was determined and was proposed to be responsible for the continuous advancement of oxidation to the core of material, which eventually gave rise to the spinel. Finally, in the bulk material, coarsening of the secondary carbides (M 2323C 66) was the main form of microstructural evolution.
Oxidation of  Metals (2018) DOI: 10.1007/s11085-018-9837-6

2) Revisiting the Aluminum Trimesate-Based MOF (MIL-96): From Structure Determination to the Processing of Mixed Matrix Membranes for CO2 Capture

Marvin Benzaqui, Renjith S Pillai, Anahid Sabetghadam, Virginie Benoit, Perine Normand, Jérôme Marrot, Nicolas Menguy, David Montero and al.

A microporous Al trimesate-based metal–organic framework (MOF), denoted MIL-96-(Al), was selected as a porous hybrid filler for the processing of mixed matrix membranes (MMMs) for CO2/N2 postcombustion separation. First, the structural model of MIL-96-(Al) initially reported was revisited using a combination of synchrotron-based single-crystal X-ray diffraction, solid-state nuclear magnetic resonance spectroscopy, and density functional theory (DFT) calculations… Chemistry of Materials (2017) DOI: 10.1021/acs.chemmater.7b03203

 3) Preparation of Highly Anisotropic Cobalt Ferrite/Silica Microellipsoids Using an External Magnetic Field Abramson S., Dupuis V., Neveu S., Beaunier P. , Montero D.

Magnetic cobalt ferrite/silica microparticles having both an original morphology and an anisotropic nanostructure are synthesized through the use of an external magnetic field and nanoparticles characterized by a high magnetic anisotropy. The association of these two factors implies that the ESE (emulsion and solvent evaporation) sol–gel method employed here allows the preparation of silica microellipsoids containing magnetic nanoparticles aggregated in large chains. It is clearly shown that without this combination, microspheres characterized by an isotropic distribution of the magnetic nanoparticles are obtained...
Langmuir (2014) DOI: 10.1021/la501547q  

4) The effects of pool sediments on the egg morphology of Neotropical Eulimnadia (Branchiopoda: Limnadiidae)
Rabet N., Montero D.,  Lacau S.,

Studying the species distribution of Limnadiidae, a family of crustaceans, in environments favourable to their growth and reproduction is made difficult by their extremely short life cycle and the transient existence of adult forms. However, the eggs of these branchiopods are highly resistant to environmental extremes and persist in the soil of humidified and dried pools. We therefore studied the capacity to detect populations of Limnadiidae and identify them at the species level using egg morphology...
Journal of Limnology (2014) DOI : 10.4081/jlimnol.2014.707

5) In vitro toxicity of nanoceria: effect of coating and stability in biofluids
N. Ould-Moussa, M. Safi, M.-A. Guedeau-Boudeville, D. Montero, H. Conjeaud and J.-F. Berret

Due to the increasing use of nanometric cerium oxide in applications, concerns about the toxicity of these particles have been raised and have resulted in a large number of investigations. We report here on the interactions between 7 nm anionically charged cerium oxide particles and living mammalian cells. By a modification of the particle coating including low-molecular weight ligands and polymers, two generic behaviors are compared: particles coated with citrate ions that precipitate in biofluids and particles coated with poly(acrylic acid) that are stable and remain nanometric...
Nanotoxicology (2013) DOI: 10.3109/17435390.2013.831501

6) Thirty-Femtogram Detection of Iron in Mammalian Cells
Aymeric Galimard, Malak Safi, Nawel Ould-Moussa, David Montero, Hélène Conjeaud and Jean-François Berret

Inorganic nanomaterials and particles with enhanced optical, mechanical, or magnetic attributes are currently being developed for a wide range of applications. Safety issues have developed however concerning their potential cyto- and genotoxicity. For in vivo and in vitro experimentations, recent developments have heightened the need for simple and facile methods to measure the amount of nanoparticles taken up by cells or tissues. In this work, a rapid and highly sensitive method for quantifying the uptake of iron oxide nanoparticles in mammalian cells is reported. The approach exploits the digestion of incubated cells with concentrated hydrochloric acid reactant and a colorimetric-based UV-visible absorption technique. The technique allows the detection of iron in cells over 4 decades in masses from 0.03 to 300 picograms per cell...
Small (2012) DOI: 10.1002/smll.201102356

7) The asymmetric self-assembly mechanism of adherens junctions: a cellular push-pull unit
Brevier J. , Montero D. , Svitkina T. , Riveline D.

To form adherens junctions (AJ), cells first establish contact by sending out lamellipodia onto neighboring cells. We investigated the role of contacting cells in AJ assembly by studying an asymmetric AJ motif: finger-like AJ extending across the cell-cell interface. Using a cytoskeleton replica and immunofluorescence, we observed that actin bundles embedded in the lamellipodia are co-localized with stress fibers in the neighboring cell at the AJ…
Physical Biology (2008) DOI:10.1088/1478-3975/5/1/016005

8) First record of Lynceus brachyurus Müller, 1776 (Branchiopoda, Laevicaudata, Lynceidae) in France
Rabet N., Cart J.F., Montero D., Boulekbache H.

Lynceus brachyurus (Branchiopoda, Laevicaudata, Lynceidae) has been found in France for the first time. This species lives in various types of temporary ponds that depend on the ground water level. We provide some ecological, biogeographical, and morphological information about Lynceus brachyurus and indicate the occurrence of remarkable sympatric organisms, such as the endemic fairy shrimp Chirocephalus spinicaudatus (Branchiopoda, Anostraca)…Crustaceana (2005)

24/09/18

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