Function: Directeur de Recherches CNRS
Email: thierry.epicier [at] ircelyon.univ-lyon1.fr
Université Claude Bernard Lyon I (University of Lyon)
Phone: office: +33 (0)4 72 44 54 02; cellular: +33 (0)6 87 88 30 69
Note: this page is no more properly updated; please visit http://www.ircelyon.univ-lyon1.fr/syrcel/card/TEP/
Profile (more detailed CV in French here)
I got my PhD in 1982 at the INSA / Université Lyon I / ECL research and high education pole in 1982, and a Doctorate es Sciences degree (french Thèse d'État number 88/SAL/0038) in 1988, on the study of ordering phenomena and dislocations in metallic carbides.
From 2003 to 2010, I funded the research group Nano- and Microstructures (SNMS) of the MATEIS unit, a CNRS-associated lab. at INSA Lyon dealing with physical and multi-functional properties of all classes of materials, which I joined after a post-doctoral stay at the NCEM, Lawrence Berkeley Lab. in 1988-1989. This group of 5 to 7 permanents researchers and teachers is still currently in charge of the Electron Microscopy units of the MATEIS lab., and is deeply implicated in those of the CLYM structure.
I was Director of the CLYM research Federation (Consortium Lyon - St-Etienne de Microscopie, housing 8 microscopy units shared between 13 public partners) from 2007 to end of 2015 (Download CLYM AERES/HCERES activity reports here: AERES 2011, HCERES 2014). From 2009 to 2014, I have been runing HR(S)TEM studies of nanomaterials and nanoparticles at Tohoku University, Sendai, Japan, in collaboration with prof. Toyohiko Konno at IMR, in the frame of the ELyT-lab project (University of Lyon - Tohoku University).
As the former Director of CLYM, I have been a member of the platforms committee of the French network METSA which links eight platforms in France (Tranmission Electron Microscopy and Atom Probe network), among which CLYM in Lyon. I was the Director of this CNRS Research Federation (METSA FR3507, created in 2012) from 2012 to end of 2015 and is Deputy-Director up to end 2020.
In 2016, I have had the honour to chair the XVIth European Microscopy Congress (EMC2016) held in Lyon from August 28 to September 2 and organized under the auspices of the European Microscopy Society EMS and the French Society of Microscopies SFµ (web site still active: www.emc2016.fr).
In April 2020, I joined the Institute of Research on Catalysis and Environment in Lyon, IRCELYON to develop methodological approaches in environmental electron microscopy applied to nanocatalysts.
Research Interest: Microstructures and Nanostructures of Materials
I am involved in Transmission Electron Microscopy since more than 20 years and have a general experience in Electron Microscopy, as attested by the various domains covered by its scientific production:
All these studies were declined to different classes of materials: metallic alloys (including steels), ceramics, nano-particles (core-shell structures, bi-metallic phases for magnetic applications, hybrid nano-materials, nanowires, catalysts), polymers and various kinds of heterogeneous and composite materials.
Since my arrival in IRCELYON, my research is more focussed on Environmental TEM to study the evolution of nanocatalysts during in situ conditions approaching operando working conditions. One specific activity concerns a combined Deep Learning and Multiple Objects Tracking approach to quantify the dynamical evolution of a whole population of nanoparticles (NP) during in situ ETEM experiments in the context of heterogeneous catalysis. An optmised Unet neural network is trained on dedicated STEM simulations and NP trajectories are reconstructed according to a continuous energy based routine (see example below mimicking PdO NPs on a delta-alumina support during in situ calcination under oxygen; still going trajectories are un blue while previously stopped ones are in red. The green marks indicate fusion events. Project MATEIS/IRCELYON, LaHC and CREATIS).
A more recent activity concerns the study of condensation of water starting from wet atmospheres produced in ETEM by the injection of a few mbars of water vapor: further cooling of the specimen allows to achieve thermodynamical conditions suitable for either condensation or evaporation of water. This work has first been performed to study the deliquescence and dissolution of NaCl nanaocubes directly in the microscope, with the perspective to extend these experiments to the study of atmospheric aerosols for a better understanding of the clouds formation (linked to the global warming problem). ANR project 'WATEM' n°20-CE42-0008.
Some PDFs of seminars or congress contributions (updated 2021)
I was the General Physics Secretary of the French Microscopy Society SFµ in 2010 and 2011 and presented the BID for organizing the next European Microscopy Conference in France, under the auspices of the SFµ, the European Society (EMS) and the word body IFSM. As such, I was the chairman of EMC2016 in Lyon (France), and I have been a member of the EMS board from 2012 to 2020.
I have been involved in several National or International Research programs, (e.g. International collaborations with Japan, Belgium, Spain, Ukraine, England, Italy, China, USA, Canada among others). I am also regularly involved in industrial cooperative programs with local and national French industries. I was the coordinator of the ANR contract "CONTRAPRECI" (ANR-06-BLAN-0205) and of the collaborative project 3DCLEAN (15-CE09-0009-01).
Science for the public
A recent initiative has been to participate to a Pop'Sciences festival organised at Lyon in May 2019. A modest software has been developed to illustrate the evolution of Transmission Electron Microscopy from the beginnings to present (might be device dependant for a correct display).
Free download here
Teaching / Programming
. Participant to CNRS formations in Transmission Electron Microscopy (Villeurbanne) and Electron Tomography (Strasbourg).
. Diffraction-Workshop software: freeware to index TEM 'dots' or 'ring' diffraction patterns - plus some minor options... -): downoad here
Publications (updated 2022/08)
I have published 146 referred papers, 8 Book chapters, more than 130 Proceedings of Conferences and have attended with about 330 contributions more than 150 National and International Congresses or Workshops (with 68 invited talks as speaker and 23 additional ones as co-authors, among which 57 in international Conferences and/or Schools). I have supervised directly 18 PhD students and 17 post-docs.