
Synthèse par CVD de films de nitrure de bore aux propriétés optimisées pour dispositifs en optoélectronique
Phd candidate: Laure Tailpied
Date and Location : Wednesday 25/04/23, 14h00, Contensou Room, ONERA, Châtillon.

Cristallographie des bicouches homophases désorientées par rotation-translation
Speaker :
Denis Gratias
Date and Location : Friday 28th April 2023 à 10h30, LEM room, ONERA Châtillon

Virtual material design
Speaker : Maxime Moreaud
Date and Location : Thursday 12Th May 2023 at 10h30, LEM room, ONERA Châtillon.

Rydberg atoms: a versatile tool for quantum technologies
Speaker : Sylvain Schwartz
Date and Location : Thursday 30th March 2023 at 10h00, LEM room, ONERA Châtillon.

Atomic scale modeling of the plasticity of body-centered cubic transition metals
Speaker : Baptiste Bienvenu
Date and Location : Tuesday 8th November 2022 at 10h00, LEM room, ONERA Châtillon.

Ladislas Kubin passed away
It is with great sadness that we learned of the death of our colleague Ladislas Kubin, which occurred on October 18, 2022.

Data-driven models of atomic simulations in discrete and continuous state spaces
Speaker : Thomas Swinburne
Date and Location : Tuesday 28th June 2022 at 11h00, LEM room, ONERA Châtillon.

Optical properties of black phosphorus: from bulk crystal to atomic layers
Phd candidate: Etienne Carré
Date and Location : Thursday 23/06/22, 14h30, Salle Contensou, ONERA, Châtillon.

Modelling of the propagation of a short crack in ductile material coupling phase-field method and dislocation dynamics
Phd candidate: Luis Eon
Date and Location : Tuesday 14/06/22, 10h00, Salle Contensou, ONERA, Châtillon.

Dislocation-free plasticity in small-grained metals
Speakers : Marc Legros
Date and Location : Wednesday 8th June 2022 at 14h00, LEM room, ONERA Châtillon.

Combining X-ray Tomography and Diffraction modalities to study in situ the mechanics of polycrystalline materials
Speakers : Clément Ribart, Henry Proudhon
Date and Location : Thursday 31st Mars 2022 at 14h00, Contensou conference room, ONERA Châtillon.

Scientific day in honour of François Ducastelle
A scientific day organised by the laboratory will be held on 11 July 2022 at the École des Mines de Paris in honour of François Ducastelle. The day will be a balance between scientific and memorial aspects combining past and present science, testimonies, and companionship throughout his long research career.

GDR-IRN HOWDI annual meeting
The meeting will be held in Dourdan (Paris area, France) on May 9-13 2022. Invited talks, tutorials, contributing talks, poster sessions, and social events are scheduled. Instructions for submitting an abstract or more information about the meeting can be found at https://howdi2022.sciencesconf.org/.
Local contact: Lorenzo Sponza

Laboratory days
From 12 to 15 October 2021, LEM staff and some guest researchers presented their research activities during the “laboratory days”.

Proof by image – The spaghetti incident
The image “The Spaghetti incident” by Riccardo Gatti and Laurent Korzeczek, selected for the “Proof by image” 2021 competition organized by the CNRS.

Thesis prize : Étienne Carré
Congratulations to Étienne Carré for winning the ONERA 2021 thesis prize in the “Materials and Structures” field. This prize, awarded each year by senior ONERA researchers, aims to encourage future researchers on the path to excellence and to recognize remarkable work.

Impact of thermal strain hardening on the precipitation of hardening phases during SLM manufacture of an aluminium alloy
Speaker : Frederico Orlacchio
Date and Location : Tueday 28th September at 9h30, visioconference at the followink link : https://rdv.onera.fr/seminaireLEM

Investigation of the solid-liquid transition of Ag-Pt nanoparticles
Speaker : Djahid Oucheriah
Date and Location: Thursday 29/07/2021 11h00, videoconference at the following link : https://cnrs.zoom.us/j/98877547159

François Ducastelle passed away
It is with great sadness that we have learned of the sudden death of our colleague François Ducastelle, which happened on Friday 2 July 2021.François joined ONERA in 1965 as a trainee and was hired as junior scientist in 1968. He prepared his two theses and spent his entire career as a researcher. From 1981…

First-principle studies of light atom diffusion in γ-TiAl and experimental investigation on MAX phase oxidation
Speaker : Dr. Enrica Epifano
Date and Location: Friday 25/06/2021 14h00, videoconference at the following link : https://rdv.onera.fr/seminaireLEM

Viviane Laut-Cothias passed away
Viviane Laut-Cothias, our executive assistant, was a person who gave the best of herself, with a constant desire to be useful to everyone. She was very careful with others and radiated great kindness. Her departure leaves a great void and a lot of sadness.

Contribution of the Electron Channeling Contrast Imaging in polycrystal plasticity
Speaker : Dr. Antoine Guitton
Date and Location: Thursday 27/05/2021 14h00, videoconference at the following link : https://rdv.onera.fr/seminaireLEM

Characterisation of shear bands and plasticity in model glasses at the atomic scale
Speaker : Dr. Armand Barbot
Date and Location: Thursday 11/03/21 14h00, LEM meeting room (E2.01.20), Châtillon.

Modeling of platinum-based nano-alloys: Co-Pt, emblematic system of the order, and Pt-Ag, hybrid system between order and demixtion.
Speaker : Dr. Alexis Front
Date and Location: Thursday 21/01/21 14h00, LEM meeting room (E2.01.20), Châtillon.

Confinement of dyes inside boron nitride nanotubes: photostable and shifted fluorescence down to the near infrared
Scientists of LEM, LP2N (France), Polytechnique Montréal, Université de Montréal (Canada) have succeeded in encapsulating organic dye molecules inside a boron nitride nanotube. More details on CNRS INP website and on DR04 website.

Accelerated diffusion by irradiation and plastic deformation: microstructural and elemental analysis
Speaker : Dr. Lisa Belkacemi-Rebrab
Date and Location: Friday 16/10/20 14h00, LEM meeting room (E2.01.20), Châtillon.

Phase field modeling of deformation twinning in β-metastable titanium alloys
Phd candidate: Juba Hamma
Date and Location : Monday 14/09/20, 14h00, Salle Contensou, ONERA, Châtillon.

Excitons in lamellar boron nitride: study of hexagonal phases, rhombohedral phases and 2D heterostructures.
Phd candidate: Alexandre Plaud
Date and Location : Thursday 10/09/20, 14h00 Salle Contensou, ONERA, Châtillon.

René Caudron passed away
René Caudron passed away on June 18, 2020. He spent his entire career at ONERA in the Materials Department and then at the Microstructures Study Laboratory until his retirement in 2003.

CPFEM simulations of grain size effect in FCC polycrystals: a new approach based on surface GND density
Speaker : Maoyuan Jiang
Date and Location:Monday 09/03/20 14h00, LEM meeting room (E2.01.20), Châtillon.

Orientation imaging at the onset of plastic deformation
Speaker : Nicola Viganò
Date and Location : Friday 21/02/20, 14h00 LEM meeting room (E2.01.20), Châtillon.

Study of deformation mechanisms during creep at 1050°C/120MPa in MC2 and MCNG nickel base superalloys
Speaker: Dr. Moustafa Benyoucef
Date and Location : Tuesday 10/12/19, 10h30 LEM meeting room (E2.01.20), Châtillon.

Coupling Bragg Coherent Diffraction Imaging (BCDI) and Molecular Dynamics to investigate nanostructure
Speaker : Dr. Maxime Dupraz
Date and Location : Monday 25/11/19, 14h00 LEM meeting room (E2.01.20), Châtillon.

Georges Saada passed away
Georges Saada, Professor Emeritus of the University of Paris 13, Grande Médaille 2008 of the SF2M, passed away last Friday, August 30. George was 87 years old.
He was a member of the LEM since 1990.

An artist among us !
Congratulations to Viviane Cothias-Laut (our assistant director) has been selected to publish her work in the art magazine Art Foliio

Phd Defence:” Investigation of grain size and shape effects on crystal plasticity by dislocation dynamics simulations”
Phd Candidate: Maoyuan Jiang
Tuesday 04/05/2019, 13h30
Amphi 3, Bâtiment Eiffel, CentraleSupélec, 8-10 rue Joliot-Curie, 91190 Gif-sur-Yvette

Seminar:”Machine learning for atomistic materials science”
Speaker: Dr. Mihai-Cosmin Marinica
Tuesday 21/05/2019 10h30
LEM meeting room (E2.01.20), Châtillon.

Dr. Enrica Epifano seminar
“Thermodynamic aspects of nuclear fuels. Case studies: (U,Am)O2 and JOG chemistry in fast reactors”, Thursday 9th May at 11h (LEM Conference room E2.01.20).

Dr. Esko Kauppinen seminar
“Tuning the SWNT atomic structure during the floatingcatalyst chemical vapor deposition (FC-CVD) synthesis “, Monday 6th May at 14h (LEM Conference room E2.01.20)

Dr Damir Pinek seminar
“A description of 211 MAX Phases Electronic Structure based on Rigid Band Models”, Wednesday 15th Mai at 14h00, LEM conference room (E2.01.20), Châtillon.

Dr. Matous Mrovec seminar
“Atomistic simulations of extended defects in iron and its compounds using magnetic bond order potentials”, Wednesday 20th March at 11h00, LEM conference room (E2.01.20), Châtillon.

“HDR” Defence: Mathieu FEVRE
Mathieu Fèvre will defend his HDR thesis entitled “Modelling and characterization of alloys and alloy nanoparticles” in order to obtain the diploma of “Habilitation à Diriger des Recherches”, Tuesday 29th January2019 at 2 p.m., in the BLANDIN amphitheatre of the Laboratoire de Physique des Solides on the site of the Faculté des Sciences d’Orsay (Building…

Dr. Markus Stricker seminar
“A new view on dislocation multiplication in Stage II deformation”, Monday 28th January at 14h00, LEM conference room (E2.01.20), Châtillon.

PhD Defence : Ouafi Mouhoub
Mr. Ouafi Mouhoub will defend his PhD thesis entitled “Structural and electronic properties of graphene, hexagonal boron nitride and their heterostructures” on Wednesday, December 19 at 2 pm. His defense will take place at the University Paris Diderot, Condorcet Building, 10 rue Alice Domon et Léonie Duquet, 75013 Paris – Salle Luc Valentin (454A).

PhD Defence : Gader Altinkurt
Gader Altinkurt will defend her Phd thesis entitled “Apport de la microdiffraction Laue pour la détermination des contraintes internes dans un superalliage à base de nickel grenaillé : effets de la microstructure et des traitements thermomécaniques” on Thursday, December 20 at 10 am. Her defence will take place at the Institut Jean Lamour, Campus Artem,…

PhD Defence : Carolina Baruffi
Carolina Baruffi will defend her Phd thesis entitled “Application of an Overdamped Langevin Dynamics to the study of microstructural evolutions in crystalline materials” on Monday, December 17 at 2 pm. Her defence will take place at the ONERA Centre in Châtillon (29 avenue de la division Leclerc) – Contensou room. Application of an Overdamped Langevin…

PhD Defence : Hocine Lebbad
Mr Hocine Lebbad will defend his Phd thesis entitled “Modeling the growth of Widmanstätten structures using the phase field method” on Tuesday, December 12 at 2 pm. His defence will take place at the ONERA Centre in Châtillon (29 avenue de la division Leclerc) – Contensou room.

2D Materials and their Heterostructures
This two-day meeting is aimed at local and European actors active in the growth of two-dimensional materials and their heterostructures. It aims to discuss common research strategies, at the University of Paris-Saclay and beyond, for the synthesis, characterization and valorization of heterostructures of 2D materials with controlled physical properties.

The 30 years of the LEM
LEM will celebrate its 30th anniversary on tuesday 9th October in Châtillon (ONERA).

PhD Defence : Denise Carpentier
Ms Denise Carpentier will defend her doctoral thesis entitled “Simulation of the kinetics of absorption of point defects by dislocations and clusters of defects” on Friday, October 12 at 2 pm. His defense will take place at the Neurospin Centre in Saclay – J. Talairach amphitheatre.


Matériaux 2018 – Strasbourg (19th-23rd november 2018)
LEM participates in the organisation of the conference entitled “Matériaux Métalliques”. LEM contacts are Yann Le Bouar and Riccardo Gatti.

NT 18 – Bejing/China (15 -20 july 2018)
The LEM is a member of the NT18 steering committee, co-chairing the conference. LEM Contact: Annick Loiseau.